CR-Pro Computed Radiology Imaging Device

Setup and Installation Guide
April 2010
Radlink, Inc.
2400 Marine Ave.
Redondo Beach, CA 90278
310-643-6900
310-643-6906 (fax)
00.09-002A
© Copyright 2008 by Radlink, Inc
All rights reserved
Printed in USA
Specifications and product and/or service offerings are subject to change without
notice. The information in this book is provided for informational proposes only.
It is subject to change without notice. Radlink, Inc. assumes no liability for any
errors or inaccuracies that may appear in this book.
No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying,
recording or otherwise, without the prior written permission of Radlink, Inc.
Radlink Inc.
2400 Marine Ave
Redondo Beach, CA 90278
310-643-6900
310-643-6906 (fax)
www.radlink.com
1
Preface
•
THANK YOU – For purchasing the Radlink CR-Pro Computed Radiology
Imaging Device. This manual will assist you in learning all the functions of
your CR-Pro, from installation through operation. Please read each section
carefully.
•
SAFETY - Read and follow all warning and safety instructions in this User’s
Manual and marked on the product. Not following the instructions may be
hazardous or illegal.
•
INSTALLATION – Follow the Installation Instructions in this manual carefully.
Use only the supplied accessories. If parts are missing, contact Radlink
before proceeding.
•
PRESCRIPTION USE STATEMENT
•
•
CAUTION: FEDERAL LAW RESTRICTS THIS DEVICE TO SALE BY
OR ON THE ORDER OF A PHYSICIAN, RADIOLOGIST, DENTIST,
VETERINARIAN, CHIROPRACTOR OR ANY OTHER PRACTIONER
LICENSED BY THE LAW OF THE STATE IN WHICH HE PRACTICES
TO USE OR ORDER THE USE OF THE DEVICE.
Furthermore, Federal law restricts the possession of this device to:
A person, or his agents or employees, regularly and lawfully engaged in the
manufacture, transportation, storage, or wholesale or retail distribution of
such device.
2
•
SAFETY – Read and follow all warning and safety instructions in this User’s
Manual and marked on the product. Not following the instructions may be
hazardous or illegal.
•
LIFTING HAZARD – The CR-Pro weighs 198 lbs (90 kg)
Do not attempt to lift the unit by one person. Always seek help from two
additional able bodied persons.
Lifting heavy equipment may result in serious injury to personnel or
damage to equipment and possibly adjacent surroundings.
•
LASER SAFETY – The CR-Pro is a Class 1 Laser Device which utilizes a
125 mW solid state laser. The covers on the CR-Pro and the enclosed inner
housing protect the user from direct and indirect exposure when the unit is
operating. Under no circumstances are the covers to be removed while the
unit has power applied. Removing of the covers should be done only by a
qualified technician for servicing.
•
FCC NOTICE “Declaration of Conformity Information” – This
equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
commercial installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause interference to radio communications.
Electromagnetic Compatibility (EMC) is the ability of items of electronic
equipment to function properly together in the electronic environment.
3
Electromagnetic Interference (EMI) is any signal or emission, radiated in free
space or conducted along power or signal leads, that endangers the
functioning of a radio navigation or other safety service or seriously degrades,
obstructs, or repeatedly interrupts a licensed radio communications service.
Radio communication services include, but are not limited to, AM/FM
commercial broadcast, television, cellular services, radar, air-traffic control,
pager and Personal Communication Services (PCS). These licensed
services, along with unintentional radiators such as digital devices, including
computers, contribute to the electromagnetic environment.
While this device has been designed and determined to be compliant with
regulatory agency limits for EMI, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause interference
with radio communication services, which can be determined by turning the
device off and on, you are encouraged to correct the interference by one or
more of the following measures:
•
Re-orient or relocate the receiving antenna.
•
Relocate the device with respect to the receiver.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment to an outlet on a circuit different than that
to which the receiver is connected.
• QUALIFIED SERVICE – All service must be performed by the factory or
an authorized service technician. There are no user replaceable parts inside
the CR Pro. DO NOT remove the covers as internal parts may be damaged,
the warranty will be voided and it may be hazardous to your health.
•
SPACE REQUIREMENTS – The CR-Pro utilizes 36in (91.4cm)(w) x
24in( 61cm)(d) x 58in(147.3cm) (h) minimum.
• POWER REQUIREMENTS –
Domestic (U.S.): AC outlet 100V – 120VAC, 60 Hz, 5A
European: AC outlet 200V – 240VAC, 50Hz, 3A
4
The AC outlet should be dedicated to the CR-Pro (no other devices
connected to this circuit) to prevent the possibility of injected line “noise “by
other devices.
FUSE – The input power is fused at the AC power input connector at the
bottom, right rear of the CR-Pro cabinet. The fuses are located in a box
directly above the input connector and are an integral part of the connector
assembly.
•
Inside the box are two (2) fuses as follows:
Domestic 100 – 120VAC
European 200 – 240VAC
5A Fuses (standard)
3A Fuses (standard)
• ENVIRONMENT –
Temperature – 60ºF (19ºC) to 80ºF (32ºC) Operating
40ºF (4ºC) to 90ºF (33ºC) Non-operating
Relative Humidity – 20% to 80% non-condensing
Light – Phosphor plates are light sensitive and are erased if exposed to light.
The CR-Pro cassettes are light protected. However, light can penetrate the
CR-Pro light seal if bright light or sunlight is directed to the cassette slot on
top of the CR-Pro. Ambient light in the proximity of the CR-Pro should be kept
to a minimum.
•
•
•
SHIPPING AND UNPACKING THE CR-PRO – The CR-Pro is
shipped in a custom designed box that protects the unit from shipping
damage. When the unit is returned for any reason, it must be package in the
original container. Retain all Interior protective parts and hardware for reuse.
NOTE – Unit shall be unpacked and installed by authorized service
provider.
CAUTION – The packing crate can be tipped when shipping and
moving and should be tethered to avoid tipping. The CR-Pro weighs 198
pounds and, even with attached casters, to avoid injury, it should not be
moved by less than two people. If lifted, such lifting should be
performed by professional movers or installers.
5
TABLE OF CONTENTS
Chapter 1: Hardware Installation
Chapter 2: Setup and Configuration
Chapter 3: Test Scan Guide
Chapter 4: Troubleshooting Guide
Chapter 5: Maintenance Procedures
Appendix
Hardware Specifications
Error Conditions and Actions
User Quality Assurance & Maintenance Program
DICOM Conformance Statement
6
Introduction
The Radlink CR-Pro is a radiological device, which digitizes erasable phosphor
plates and transmits the image to an onboard computer for review, archiving or
forwarding to other facilities for further evaluation and archiving. The CR Pro only
utilizes cassettes manufactured by Radlink.
The CR Pro’s unique design makes it virtually maintenance free, as there are no
mirrors or galvanometers, which are subject to frequent adjustment. Additionally,
the CR Pro mechanism is shock mounted to allow for more reliable operation.
Multiple images may be sent simultaneously to the PACS hosts and the DICOM
Spooler handles multiple destinations and a DICOM broadcast capability. The
system also supports the opening of DICOM 3.0 files.
The CR Pro has relatively few controls and connections making the installation
process a quick and efficient procedure. Operating over the Ethernet port
requires the easy attachment of a CAT5/6 cable. The software completes the
remainder of the installation.
7
Chapter 1
Hardware Installation
8
Hardware Installation
1. Place the CR-Pro on a solid flat, leveled surface.
2. Plug the power cord to the AC Power Adapter located on the back of the
CR-Pro. (Figure 1)
3. Plug the end of the power cord to an available power outlet. A UPS/Line
conditioner is recommended. It is desirable to have the CR-Pro on an
isolated circuit to avoid conducted noise from other devices affecting the
quality of operation.
4. Plug one end of the Ethernet cable (Cat5/6) into the CR-Pro Ethernet port
(see Figure 1). Note: Do not route the Ethernet cable and the power cable
in close proximity as power cable radiation may affect transmission of
data.
6. Turn the Power ON/OFF switch on the back of the CR Pro to ON (see
Figure 1)
.
USB Port
Ethernet Port
Power ON/OFF Switch
AC Power Adapter
9
Chapter 2
Setup Guide
and Configuration
10
STEP 1: Application Start Up
1. To start the application double click the Radlink Icon located on your
desktop. (Figure 1)
Figure 1
11
2. Image Pro software home screen will appear as Figure 2.
Figure 2
12
3. Verify that Scanner Status is lit green with READY. (Figure 3)
Figure 3
13
STEP 2: Calibration Procedure
Calibration of the CR PRO is required to compensate for any hardware
differences and should be performed at least once a month, depending on
usage. Recommended: A 14x17 inch cassette must be used for calibration. If a
smaller size cassette is used, banding will be apparent at the both sides of
scanned images when a larger cassette is used. Remove any grid that might be
present.
1. Expose Plate to Xray
Note: Expose the cassette on the side without the Radlink Label)
If distance is:
o 72” (measured from bottom of X-ray unit) at 70 Kvp, 30 MAs
o 40” (measured from bottom of X-ray unit) at 70 Kvp, 9 MAs
2. Rotate the cassette 180 degrees and expose with the same technique
used above.
3. Load Cassette Scan
Insert the exposed cassette in the CR Pro machine. (Figure 4)
Figure 4
14
4. Start Calibration
From the application Click Manage CR Setup Calibrate. (Figure 5)
The calibration process should take 3-4 minutes to complete.
Figure 5
5. Calibration - The CR Pro will scan the exposed plate in order to calibrate
the intensity to allow for the best possible images to be acquired from the
plate. Once scanned, the system will then go through a
second pass and erase the plate to normal levels. The
calibration process will take approximately 4 minutes. Do not
remove the cassette until calibration has been completed.
Note that if the cassette has not been exposed correctly an
error message will display (Figure 6).
Figure 6
6. Finished – The CR Pro is now calibrated and you can begin using it for
processing exposed plates. (To verify that the calibration has completed a
message will display in lower left hand corner. Scanner status bar will
display Scanner ready and turn green.)
15
Chapter 3
Test Scan Procedure
16
STEP 1: Expose an Image
You are now ready to scan your first cassette. Expose an image using one of the
cassette(s) that you purchased.
Insert the exposed cassette in the slot on top of
the CR-Pro. (Figure 1) If you are using the small
(10” x 12”) cassette be sure to close the guides
snuggly around the cassette.
Figure 1
STEP 2: Startup Window
Launch the imaging software:
Double Click the Radlink Pro Imaging icon
(Figure 2).
Figure 2
17
STEP 3: Scan Cassette
Select New Patient to add or New Study to add an existing patient. For detailed
description of the functions and operations of the software and system, please
refer to the CR Pro Software Guide for Radiological Imaging or CR Pro Guide for
Veterinary Imaging.
Figure 3
18
STEP 4: Patient Info Window
Patient Information window will display, input the following:
ID, Sex, Last Name, First Name, Middle Name and Birthday
(MM/DD/YYYY format)
Then click Next button to continue.
Figure 4
19
20
STEP 5: Selecting Body Part
Figure 5
1. Input the same technique used when you expose the cassette.
2. Click Save
3. Click Scan CR button
21
STEP 6: Scan Cassette
The CR Pro will now begin digitizing your exposed image.
Figure 6
STEP 7: Auto Erasing
After the image has been processed the CR Pro will automatically begin the
erasing procedures.
Figure 5
Figure 7
22
STEP 8: Complete Study
A sample scan of a knee phantom is shown below.
Figure 8
For detailed description of the functions and operations of the software and
system, please refer to the CR Pro Software Guide for Radiological Imaging or
CR Pro Guide for Veterinary Imaging.
23
Chapter 4
Troubleshooting Guide
24
General Troubleshooting
Problem
Action
No power to the CR Pro
Ensure the monitor power is on. Check that the
Power Switch on the back of the CR Pro is “ON”
and unit is plugged into the surge protector or wall
receptacle. If problem persists contact your
authorized service provider.
Cassette Jam
From the Acquisition Software Select “Manage”
“CR Setup” “Reset Plate”. If not resolved power off
the CR Pro and power back on. If problem
persists please contact your authorized service
provider.
“Cassette not Detected”
Make certain that the cassette guides on the top
cover are firmly pressed against the cassette.
“Unable to unload Cassette”
From the Acquisition Software Select “Manage”
“CR Setup” “Reset Plate”. Examine the cassette
clip on the bottom of the cassette. If loose or bent
contact your authorized your authorized service
provider.
Horizontal Lines
Make certain that there are no overhead lights
above the CR Pro.
Artifacts on Images
Confirm that artifacts are consistently appearing
with the same cassette. If so follow cassette
cleaning procedure in Chapter 5.
Grainy Images
Has system been calibrated in the past 30 days?
If not please follow calibration instructions on
Chapter 2 Setup and Configuration.
Noise during scanning
Contact your authorized service provider.
Note: For additional troubleshooting tips please refer to the CR Pro Software
Guide for Radiological Imaging or CR Pro Guide for Veterinary Imaging.
25
Cassette Related Problems Troubleshooting
Symptom
Damage to outer
enclosure
Possible Causes
• Rough handling by
technicians
• Patient contact during
x-ray exposure
•
•
•
Plate is not retained in
• Bent or damaged
the outer enclosure when
Snap-Lock clip
cassette is out of the unit,
or the plate is not
extracted from or
returned to the cassette.
Problem is localized to
one cassette.
Damage to phosphor
• Damage to outer
plate
enclosure (see above)
• Damaged during
cleaning procedure
Image artifacts (spots
• Contaminated
steaks, fingerprints etc.)
phosphor plate
• Scratched phosphor
are observed in the
plate
scanned images.
Artifacts are localized to
one cassette.
Plate is not extracted
• Possible problem with
from or returned to the
CR Pro internal
cassette. Problem is
components
observed with several
different cassettes.
Vertical bands of varying • CR Pro is out of
density observed in the
calibration
scanned image. Problem • Contaminated scanner
is observed with several
optics
different cassettes.
“Crackling” sound emitted • Noise is generated
from the upper portion of
when the edge of the
the cassette when the
plate contacts a
plate is returned to the
retaining spring inside
cassette.
of the cassette.
26
•
What To Do
Retrain technicians
Use a Cassette
Protector to protect the
cassette during the
exposure process.
Return cassette to
Radlink for repair
Contact Radlink
Customer Support for
repair information
•
•
Retrain technicians
Return cassette to
Radlink for repair
•
•
Clean phosphor plate
Return cassette to
Radlink for repair
•
Contact Radlink
Customer Support for
repair information
Perform a calibration
procedure
• Contact Radlink
Customer Support for
repair information
• The sound may be
heard when a new
cassette is first used.
The sound is not
indicative of a problem
with the cassette and
will diminish with use.
•
Chapter 5
Maintenance Procedures
27
CR ProTM Phosphor Plate Cassette Maintenance Procedure
The Phosphor Plate Imaging Cassette is a key component in the CR ProTM
Computed Radiography System. The CR Pro’s cassette is comprised of the outer
enclosure and the phosphor plate. The outer enclosure provides protection to the
phosphor plate to prevent physical damage and contamination. It also prevents
ambient light from reaching the phosphor plate. A small spring-steel clip called a
“Snap-Lock” is used to retain the phosphor plate within the cassette when it is not
being used.
The phosphor plate is comprised of a metal plate to which a plastic film has been
adhered. The outer layer of the plastic film is coated with a specially formulated
phosphor material. A white plastic strip is attached to the rear-side of the
phosphor plate. The white strip is used, in conjunction with light sensors installed
in the CR Pro unit, to monitor the location of the plate as it is transported through
the scanning and erase processes.
The following cassette handling and care guidelines should be followed to ensure
peak performance of the CR Pro system:
Storage and Handling
•
•
•
•
•
•
•
•
Always store cassettes in an area away from possible stray X-Ray
radiation.
Store cassettes in an area away from ambient sunlight and bright artificial
light.
Always store the cassettes in an area that protects them from possible
physical damage.
Cassettes should be stored resting on their long edge.
Do not store cassettes by stacking them on top of each other as this may
result in damage to the phosphor plate.
Always use care when handling the cassettes to prevent damage to the
outer enclosure and the phosphor plate.
To prevent damage to the internal components of the CR Pro system,
always gently insert the cassette into the CR Pro. Never drop or slam the
cassette into the CR Pro unit.
While exposing a cassette, do not allow the patient to come into direct
contact with the cassette as this may cause damage to the outer
enclosure or the phosphor plate.
28
Care and Cleaning
To ensure optimum performance from the cassettes and to eliminate potential
image artifacts, it is recommended that the cassettes be cleaned and inspected
once a month. It may be necessary to clean the cassettes more frequently if the
unit is used frequently or if it is installed in an unusually dusty environment such
as a veterinary clinic. The following procedure should be followed to clean and
inspect the cassette:
1. Inspect the outside of the cassette for physical damage. If damage is
observed, contact Radlink Customer Support at (310) 643-6900 for
information regarding available repair services.
2. Place the cassette on a flat surface with the Snap-Lock retaining clip
facing upward (see photo #1).
Snap-Lock Clip
Photo 1
3. Use the thumb on one hand to slightly lift the Snap-Lock while inserting a
small flat-bladed screwdriver between the cassette and the phosphor plate
(see photo #1).
29
4. Twist the screwdriver to extract the phosphor plate (see photo #2). To
prevent damaging the phosphor plate, do not apply pressure to the center
of the cassette while removing the plate.
Photo 2
Caution: In the next few steps, use caution when handling the exposed
plate. Handle the plate by the edges to prevent getting finger prints on
the surface of the phosphor plate.
5. Extract the phosphor plate from the cassette and place it face up on a flat
surface with the metal edge positioned beyond the edge of the work
surface. This orientation of the plate will prevent bending of the plate
during the cleaning process.
6. Dampen a lint-free cloth with either denatured or industrial grade isopropyl
alcohol.
30
7. Wipe the long edges of the plate to remove any accumulated residue (see
photo #3). Cleaning the edges of the plate will reduce the possibility of
dragging contamination from the edges of the plate onto the phosphor
surface when it is cleaned.
8. Dispose the dirty cleaning cloth after use.
Photo 3
9. Dampen a new lint-free cloth with either denatured or industrial grade
isopropyl alcohol.
31
10. Wipe the surface of the phosphor plate in the long direction with
overlapping stokes. Rotate the cleaning cloth to use a clean section as
you progress across the plate (see photo #4). NOTE: do not use a
circular motion when cleaning the plate as this may drag
contamination from the un-cleaned area of the plate back on to the
surfaces that have just been cleaned.
Wipe in this direction
Photo 4
11. Inspect the phosphor plate for any remaining foreign material; repeat the
cleaning process as necessary.
12. Inspect the phosphor plate for damage such as deep scratches, dents,
etc. If physical damage is observed, contact Radlink Customer Support.
13. Carefully reinsert the phosphor plate into the cassette.
14. Inspect the “Snap-Lock” retaining clip on the cassette. The clip should
retain the plate firmly. If the clip is bent or does not properly retain the
plate, contact Radlink Customer Support.
32
15. Turn the cassette over and clean the lower corners where the side and
bottom edges of the cassette join together (see photo #5).
Clean Here
Photo 5
16. This completes the cleaning and inspection procedure, the cassette can
now be returned to service.
33
Appendix
34
CR-Pro Specifications
.
Table 1 –System Hardware Specifications
2100 Series Specification
Internal Computer Processor
Memory
Storage
Display
Touchscreen
Monitor
Input/Output
USB2
USB2
Comm Port
Comm Port
Intel Pentium 2.6GHz
1GB DIMM
500 Gb hard drive
19 inch 1280x1024 display
DVD-RW
Keyboard 77 Key
Ethernet 10/100/1000 Base T
USB2
2200 Series Specification
Internal Computer Processor
Memory
Storage
Display
Touchscreen
Monitor
Input/Output
USB2
USB2
Comm Port
Comm Port
Intel Pentium 2.6GHz
2Gb DIMM
2 X 1 TB hard drive (RAID-1)
19 inch 1280x1024 display
DVD-RW
Keyboard 77 Key
Ethernet 10/100/1000 Base T
USB2
35
Table 2 – Hardware Specifications
Phosphor Plate
Scan time
8” x 10”
10” x 12”
14” x 17” Plate
Interface
Dimensions
Weight
Power
Phosphor Plate
8” X 10”
(203.2mm X 254.0mm)
10” X 12”
(254.0mm X 304.8mm)
14” X 17”
(355.6mm X 431.8mm)
14” X 34”
(355.6mm X 870.4mm)
Cassette
9” x 11” (228.6mm X 279.4mm)
Scan
12.24 seconds
18.36 seconds
26 seconds
USB or Ethernet
22”(w) x 21”(d) x 40”(h)
198 lbs.
Input voltage
Scan and Erase
24.48 seconds
37. 12 seconds
52 seconds
Input current
Internal voltage/current
Laser
Resolution
Type
Power
Spatial
Grayscale
Optical Density
range
Signal-to–noise
ratio
16 bits
0.00 to 4.00 Transition
of density
4 to 1 at 0 to 4.0 Optical
Density
15” x 18” (381.0mm X430.8mm)
15” x 35.5 (381.0mm X 901.7mm)
100 to 120 VAC, 57 to 64Hz or
200 to 230 VAC, 47 to 54Hz
3.2A for 115 VAC 60 Hz
0.9A for 230 VAC 50 Hz
+5 V at 10A max
+12 V at 1A max
-12 V at 1A max
+24 V at 5A max
Solid State
125 mw
2800 pixels over a 14.2 inch scan line
5 pixels or less
0.001 O.D. at density 1.5 O.D.
0.01 O.D. at density 2.5 O.D.
0.1 O.D. at density 3.5 O.D.
one pixel of true position over entire
film
16 bit (65535 grayscale) max
Geometry
Output format
11” x 13“ (279.4mm X 330.2mm)
(All scan modes)
36
USER QUALITY ASSURANCE & MAINTENANCE
PROGRAM FOR THE CR-PRO
INTRODUCTION:
Understanding the basic fundamentals and automating the decisions involved in obtaining
good results of x-ray imaging is the foundation of the approach Radlink has taken in the
development of the CR Pro.
GENERAL:
The x-ray tube is essentially a point source of a cone-shaped beam of x-rays. The “xrays” themselves are composed of streams of “light” particles called photons, the same
photons that make up visible light, as from a flash light or ordinary light bulb. The
difference is the wavelength of the photons; x-ray photons are a thousand times shorter
wavelength than visible light. It is this short wavelength that allows x-rays to penetrate
objects. The shorter the wavelength, the easier it is for x-rays to penetrate more and more
dense objects. For example, longer wavelength x-rays can only go through flesh and not
bone, but shorter wavelengths can go through bone easily and create the images
necessary to “see” skeletal bone structure, etc.
CONSIDERATIONS THAT AFFECT CR IMAGES:
There are several factors that contribute to the latent image the x-rays leave on the CR
plate:
1. Distance from the x-ray source point to the imaging CR plate (SID).
2. Kilovolts applied to the x-ray tube determine maximum shortest wavelength for
penetration (kVp)
3. Product of the x-ray tube current and the time of exposure (mAs).
4. Filtration of the x-rays at the x-ray tube source, usually 1.5mm to 2.5mm of
aluminum, and sometimes copper on the order of 0.5mm thick. This filtration
removes a large part of the longest wavelengths.
5. Whether or not a “grid” is used to cut down scattered x-rays produced by thick
body parts that have the effect of “fogging” or reducing contrast in the image.
6. Thickness of the body part being x-rayed.
7. The sensitivity of the CR plate itself to the x-rays interacting with the phosphor
coating which stores the latent image.
These are the seven factors that the x-ray radiology technician (XRT) considers when
taking an x-ray of a patient. The table of these factors, developed by the XRT is known as
the “Techniques Chart.”
RADLINK’S APPROACH
Recognizing that no two XRTs will use the exact same Techniques Chart, and no two
sites will use the same techniques, Radlink has developed a proprietary techniques
algorithm that can store a generic Techniques Chart by body part. This Techniques
Chart takes into account the above factors. The XRT simply uses the generic Techniques
37
Chart to define the variables for each X-Ray. Or, better yet, if the site’s Techniques
Chart is known by Radlink prior to shipment, a customized Techniques Chart can be
loaded prior to the unit’s installation at the site. The XRT can then use the installed
Techniques Chart or expand it as required. This user-friendly approach simplifies the XRay set up and provides for flexibility to tailor the image results.
38
Radlink Inc.
CR-Pro Computed Radiology Imaging Device
DICOM Conformance Statement
1. Introduction
This document provides conformance by the Radlink CR Pro Computed
Radiology Imaging Device to the DICOM 3.0 standard as structured according to
the specification set forth in DICOM Part 2.
1.1 References
(1) ACR-NEMA V3.0 – Digital Imaging and Communications in Medicine
(DICOM) v3.0 Final Draft 1993 Parts 1 through 9.
1.2 Acronyms and Abbreviations
The following symbols and abbreviations are used in this conformance
specification:
ACR
AE
CR
DICOM
DIMSE
DIMSE-C
DIMSE-N
HIS
IOD
LUT
MDIS
NEMA
OSI
PACS
PDU
RSI
SCP
SCU
SOP
TCP/IP
UCP
UID
VR
American College of Radiology
Application Entity
Computed Radiography
Digital Imaging and Communications in Medicine
DICOM Message Service Element
DICOM Message Service Element-Composite
DICOM Message Service Element-Normalized
Hospital Information System
Information Object Definition
Look-up Table
Medical Diagnostic Imaging Support
National Electrical Manufacturers Association
Open Systems Interconnection
Picture Archive and Communication System
Protocol Data Unit
Radiology Information System
Service Class Provider
Service Class User
Service-Object Pair
Transmission Control Protocol/Internet Protocol
User Conformance Profile
Unique Identifier
Value Representation
39
2. Implementation Model
The CR Pro is a medical acquisition system that supports Computed
Radiography (CR). The CR Pro encompasses the following DICOM Application
Entities:
•
CR Pro Image Transfer AE – to exchange images with other Application
Entities by the means of DICOM network exchange. It implements the
following Service Class:
o Storage SCU
•
CR Pro MWL AE – to fetch modality worklist from a worklist manager. It
implements the following Service Class:
o DICOM Modality Worklist SCU
2.1 Image Transfer
The CR Pro, acting as a single Application Entity, digitizes an x-ray phosphor
plate image as a Computed Radiography Image and transmits the image to a
Server.
2.1.1 Application Data Flow Model
Figure 1 illustrates the following scenarios:
•
Send a STORE Request to a remote DICOM AE when a study is
completed.
40
DICOM
Standard Interface
Radlink
CR Pro
Radlink
View Pro
Application
SCU
Server
SCP
Figure 1: Image Transfer Data Flow Diagram
2.1.2 Functional Definitions of Application Entities
The CR Pro Image Transfer AE component operates in a separate thread,
allowing the CR Pro to continue to operate while the images are being
transferred. It is shut down when the application terminates.
The CR Pro Image Transfer AE uses a configuration file that contains the
information used to describe both local as well as remote Application
Entities. The configuration information can also be accessed from the CR
Pro GUI interface.
41
2.2 Modality Worklist
2.2.1 Application Data Flow
DICOM
Standard Interface
Radlink
CR Pro
Radlink
View Pro
MWL AE
Modality
Worklist
SCP
Figure 2: Modality Worklist Data Flow Diagram
2.2.2 Functional Definitions of Application Entities
CR Pro MWL AE is used to query modality worklist information from a
remote DICOM device. It therefore performs the following tasks:
•
Establish a DICOM Association with a remote DICOM device.
•
Issues a request for a worklist to a remote DICOM device.
•
Retrieves Modality Worklist from a remote DICOM device.
CR Pro MWL AE component operates as part of the Radlink View Pro
Application. It is shut down when the application terminates.
42
3. Radlink CR Pro Image Transfer AE Specifications
3.1 CR Pro Specifications
3.1.1 SCU Verification
This AE provides standard conformance as an SCU to the DICOM V3.0
SOP class for Verification as shown in Table 1.
Table 1: SOP Verification Classes
SOP Class
SOP Class UID
Verification
1.2.840.10008.1.1
3.1.2 SCU Storage
This AE provides standard conformance as an SCU to the DICOM V3.0
SOP class for Computed Radiography Image Storage as shown in Table 2.
Table 2: SOP Storage Classes
SOP Class
SOP Class UID
Computed Radiography Image
1.2.840.10008.5.1.4.1.1.1
Storage
3.2 Association Establishment Policies
3.2.1 General
The CR Pro creates Association Establishment Request for the server when
a Computed Radiography Image is to be sent. Maximum PDU size is 16K
Bytes.
3.2.2 Number of Associations
The CR Pro, acting as an Application Entity, can initiate one association
concurrently.
3.2.3 Asynchronous Nature
The default Synchronous Mode of operation is used on all Associations.
Asynchronous Mode is not supported.
43
3.2.4 Implementation Identifying Information
The CR Pro Image Transfer AE is identified by the following ids:
Implementation Class UID: 1.2.250.1.59.2.43.86.243
Implementation Version Name: Radlink CR Pro
3.3
Association Initiation by Real World Activity
Related Real World Activity is the issuance of an Association with a remote
server when a Computed Radiograph Image is to be sent.
3.3.1 SOP Specific Conformance – Verification
This AE provides standard conformance as an SCU to the DICOM V3.0
SOP class for SOP Verification Classes as shown in Table 3.
Table 3: SOP Verification Classes
Transfer Syntax
Abstract Syntax
SOP
SOP Class UID Name
UID
Class
Verification 1.2.840.10008.1.1 DICOM 1.2.840.10008.1
Implicit .2
VR
Little
Endian
Role Extended
Negotiati
on
SC
U
None
3.3.2 Storage
This AE provides standard conformance as an SCU to the DICOM V3.0
SOP class for Computed Radiography Image Storage Classes as shown in
Table 4.
Table 4: SOP Storage Classes
Abstract Syntax
Transfer Syntax
Role Extended
Negotiati
SOP
SOP Class UID
Name
UID
on
Class
Secondary 1.2.840.10008.5.1.4.1.1.7 Implicit 1.2.840.10008.1 SC
None
Capture
VR
.2
U
Image
Little
Storage
Endian
44
3.3.3 SOP Specific Conformance for Non-Compressed Image Storage
Table 5 illustrates the encoding for a Non-Compressed Image.
Table 5: Non-Compressed Image Values
Attribute
Tag
VR
Value
Specific Character (0008,0005) CS ISO_IR 100
Set
SOP Class UID
(0008,0016) UI 1.2.840.10008.5.1.4.1.1.1
SOP Instance UID (0008,0018) UI 1.2.392.12345.( serial #).(year).
(month).(day).(hour).(min).(sec).
(millisec)
Study Date
(0008,0020) DA yyyymmdd
Study Time
(0008,0030) TM hhmm
Accession
(0008,0050) SH nnnnnn
Number
Modality
(0008,0060) CS CR
Conversion Type
(0008,0064) CS
Manufacturer
(0008,0070) LO Radlink
Institution Name
(0008,0080) LO
Institution Address (0008,0081) ST
Referring
(0008,0090) PN Last^First
Physician Name
Study Description (0008,1030) LO
Manufacturer’s
(0008,1090) LO Radlink CRPro
Model Name
Patient Name
(0010,0010) PN Last^First^M
Patient ID
(0010,0020) LO nnnnnn
Patient Birth Date (0010,0030) DA yyyymmdd
Patient Sex
(0010,0040) CS F, M, or O
Other Patient IDs
(0010,1000) LO
Additional Patient (0010,21B0) LT
History
Date of Secondary (0018,1012) DA yyyymmdd
Capture
Time of
(0018,1014) TM hhmm
Secondary
Capture
Study Instance
(0020,000D) UI 1.2.392.12345.( serial #.(year).
UID
(month).(day).(hour).(min).(sec).
(millisec)
Series Instance
(0020,000E) UI 1.2.392.12345.( serial #.(year).
UID
(month).(day).(hour).(min).(sec).
(millisec)
Study ID
(0020,0010) SH nnnnnnn
45
Series Number
Image Number
Samples per Pixel
Photometric
Interpretation
Rows
Columns
Bits Allocated
Bits Stored
High Bit
Pixel
Representation
Pixel Data
(0020,0010)
(0020,0013)
(0028,0002)
(0028,0004)
IS
IS
US
CS
nnnnn
nnnnn
1
MONOCHROME2
(0028,0010)
(0028,0011)
(0028,0100)
(0028,0101)
(0028,0102)
(0028,0103)
US
US
US
US
US
US
8 or 16
8,16
7, 12, 15, or 16
0
(7FE0,0010) OW
3.3.4 TRANSFER Syntax Selection Policies
Only the DICOM Implicit Little Endian Transfer Syntax is supported.
3.4
Association Acceptance Policy
The Radlink CR Pro Image Transfer AE does not accept association requests.
4
Radlink CR Pro MWL AE Specification
The Radlink CR Pro MWL AE provides Standard Conformance to the following
DICOM V3.0 SOP Classes.
Table 6: Supported Meta SOP Classes
SOP Class
SOP Class UID
Role
Modality Worklist Query Find
1.2.840.10008.5.1.4.31 SCU
4.1 Association Establishment Policies
4.1.1 General
The Radlink CR Pro View Pro application issues a request to retrieve
Modality Worklist. It initiates an association to the Modality Worklist SCP
through Radlink CR Pro MWL AE component.
The maximum PDU size allowed is 16KB.
46
4.1.2 Number of Associations
The Radlink CR Pro MWL AE initiates one association with the default
remote Modality Worklist SCP. The association is released once the Worklist
has been fetched.
4.1.3 Asynchronous Nature
This release does not support asynchronous operations and will not perform
asynchronous window negotiation.
4.1.4 Implementation Identifying Information
The CR Pro Image Transfer AE is identified by the following ids:
Implementation Class UID: 1.2.276.0.7230010.3.0.4.0
Implementation Version Name: RadlinkRouter
4.2
Association Initiation by Real World Activity
Related Real World Activity is the issuance of an Association with a remote
server when the user of CR Pro clicks on the Select button on the Worklist
screen of the user interface.
4.2.1 Proposed Presentation Contexts
This AE provides standard conformance as an SCU to the DICOM V3.0
SOP class for SOP Verification Classes as shown in Table 3.
Table 7: Proposed Presentation Context
Role Extended
Abstract Syntax
Transfer Syntax
Negotiati
on
SOP
SOP Class UID Name
UID
Class
Modality
1.2.840.10008.5.1 DICOM 1.2.840.10008.1 SC
None
Worklist
.4.31
Implicit .2
U
Query Find
VR
SOP Class
Little
Endian
47
4.2.2 SOP Specific Conformance
If the Radlink View Pro Modality Worklist component is unable to open an
association with the selected destination AE, an error message is printed in
the console window.
The View Pro Modality Worklist component does not attempt any extended
negotiation.
The following optional attributes are included in the Query Find message:
Table 8: Optional Matching Key Attributes for Basic Modality Worklist
SOP Class
Tag
Name
(0008,0050)
Accession Number
(0010,0010)
Patient’s Name
(0010,0020)
Patient ID
(0040,0100)
Scheduled Procedure Step Sequence
> (0008.0060)
Modality
> (0040,0002)
Scheduled Procedure Step Start Date
Table 9: Optional Return Key Attributes for Basic Modality Worklist SOP
Class
Tag
Name
(0008,0050)
Accession Number
(0008,0090)
Referring Physician’s Name
(0010,0010)
Patient’s Name
(0010,0020)
Patient ID
(0010,0030)
Patient’s Birth Date
(0010,0040)
Patient’s Sex
(0010,21b0)
Additional Patient History
(0020,000d)
Study Instance UID
(0032,1060)
Requested Procedure Description
(0040,0100)
Scheduled Procedure Step Sequence
> (0008.0060)
Modality
> (0040,0002)
Scheduled Procedure Step Start Date
> (0040,0003)
Scheduled Procedure Step Start Time
> (0040,0006)
Scheduled Performing Physician
> (0040,0007)
Scheduled Procedure Step Description
(0040,1001)
Requested Procedure ID
(0040,1002)
Reason for the Requested Procedure
48
4.3
Association Acceptance Policy
The Radlink View Pro DICOM Modality Worklist Component does not accept
associations.
5
Communication Profile
5.1 TCP/IP Stack
The CR Pro conforms to DICOM V3.0 TCP/IP Network Communications as
specified in Part 8 of the DICOM 3.0 Standard.
5.2 Physical Media Support
The CR Pro application supports the following: Local Area Network (LAN);
Wide Area Network (WAN); Ethernet 10BASE-T, 100BASE-T; Internet, DSL;
and CD-RW.
6
Extensions/Specializations/Privatizations
Not currently applicable.
7 Configuration
7.1 AE Title/Presentation Address Mapping
No title/presentation mapping information is required to be set for the AE
address mapping.
7.2 Configurable Parameters
The following fields are configurable for this AE: PACS AE Title; PACS IP
Address; PACS Port; Client AET.
8 Support for Extended Character Sets
No extended character sets are currently supported.
49
9 Abbreviations used in the Value Representation (VR) Column of
Supported DICOM Data Elements
Code
Meaning*
Name
AE
AS
Application entity A string with the application name.
Age string
A string with an age in days, weeks, months
or years.
AT Attribute tag
Two binary 16-bit unsigned integers denoting
the group and element.
CS Code string
A string of 16 characters at most to be used
for codes.
DA Date
An 8-character date yyyymmdd.
DS Decimal string
A string representing a fixed-point or floating
point number.
DT Date/time
A string concatenation of DA (date) and TM
(time) with optionally appended offset from
coordinated universal time.
FL Floating point
32-bit binary floating point number.
single
FD Floating point
64-bit binary floating point number.
double
IS Integer string
A string representing a signed integer. At
most 12 characters.
LO Long string
A general purpose string of at most 64
characters.
LT Long text
A text of at most 10240 characters.
OB Other byte string Byte data according to negotiated encoding.
OW Other word string 16-bit word data according to negotiated
encoding.
PN Person name
A string with a person's name according to a
5-component convention.
SH Short string
A general purpose string of at most 16
characters.
SL Signed long
32-bit binary signed integer.
SQ Sequence of
A special value representation to support
items
nested data sets.
SS Signed short
16-bit binary signed integer
ST Short text
A text of at most 1024 characters
50
Length
16 Bytes Maximum
4 Bytes Fixed
4 Bytes Fixed
16 Bytes Maximum
8 Bytes Fixed
16 Bytes Maximum
26 Bytes Maximum
4 Bytes Fixed
8 Bytes Fixed
12 Bytes Maximum
64 Chars Maximum
10240Chars
Maximum
See Transfer
Syntax Definition
See Transfer
Syntax Definition
64 Chars Maximum
16 Chars Maximum
4 Bytes Fixed
Not Applicable
2 Bytes Fixed
1024 Chars Max.
TM Time
UI
Unique identifier
UL Unsigned Long
UN Unknown
US Unsigned Short
UT Unlimited Text
A time string hhmmss.ffffff with shortcut
possibilities
A string with one identifier consisting of Vseparated numbers. It can identify a variety of
items. At most 64 characters.
32 bit binary unsigned integer
A string of bytes where encoding of contents
is unknown
16 bit binary unsigned integer
A string of graphic & control characters
16 Bytes Maximum
64 Bytes Maximum
4Bytes Fixed
Any length valid for
any other VR
2 Bytes Fixed
232-2 Characters
Max
1. Description of the information per column
The definitions used are in accordance with the Dicom standard. Column 1
specifies the requirement type RT as follows. Refer to [1], part 4 for a detailed
description. Only data elements for information object modules that are
mandatory for CT images are included. Refer to [1], part 3, table A.1.4.
Column 1
Requirement
Type
1
Meaning
Required element, and null values
are not allowed. The CTX always
provides this element.
2
Required element, but null values
are allowed. The CTX always
provides this element, possibly
with a null value.
3
Optional element. The CTX
provides this element if this is
configured. Even if configured a
null value may be provided.
1C, 2C, 3C
Conditional versions of 1, 2, 3. It is
specified which conditions must
be met in order to provide the
element.
Column
2
TAG
Group
and
Element
Number
Group
and
Element
Number
Group
and
Element
Number
Group
and
Element
Number
Column 3 Column 4
Element
VR*
Name
Element
VR
Name
Element
Name
VR
Element
Name
VR
Element
Name
VR
* Refer to [1], part 5 for a more detailed description.
51