Trophy 70 X intra-oral X-ray system User's manual

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INTRA-ORAL X-RAY SYSTEM
USER'S MANUAL
TABLE OF CONTENTS
Section Paragraph Title Page
| INTRODUCTION 1
IMPORTANT ! ... X-RAY PROTECTION
|| IDENTIFICATION LABELS 1
X-ray equipment may cause injury if used improperly. The instructions contained in this manual
must be read and followed when operating the 70-X. TROPHY dealers will be glad to assist you
in putting the 70-X into operation. In DESCRIPTION OF MAIN COMPONENTS
3.1 Tube housing assembly (tubehead) 1
The 70-X provides a high degree of protection from unnecessary X-radiation. However, no practi- a var limiting device (cone) ;
cal design can provide complete protection, nor prevent operators from exposing themselves or 34 X-ray control 2
others to unnecessary radiation.
It is important that you be fully acquainted with applicable government radiation protection regu- IV 70-X CONTROLS q
lations. Many provisions of these regulations are based on the recommendations the National Council
on Radiation Protection and Measurements. Recommendations for dental X-ray protection are publis-
hed in NCRP Report Number 35 available from NCRP Publication, P.O. Box 30175, Washington,
D.C. 20014. V GENERAL SPECIFICATIONS
Power supply requirements
Accuracy of technical specifications
Tubehead specifications
Cone specifications
Measurement basis
Duty cycle
Personal radiation monitoring and protective devices are available. You are urged to use them to
protect against unnecessary X-radiation exposure.
GI O1 OT OT O1 Où
DOUBOUN-
G) Ut G1 GI O1 GI
VI USE
Patient positioning
Tubehead positioning
Making exposures
Use of the timer
Role of the beam limiting device
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с в © № —>
То со © 09 00
VII MANUAL FILM PROCESSING 16
Vi 70-X MAINTENANCE SCHEDULE 17
IX TROUBLE SHOOTING CHART 19
Figure number
1
2
10
11
Table Number
LIST OF FIGURES
Title
70-X system
X-Ray control
Tube chart
Cooling curve
Duty cycle
Patient positioning
Tubehead positioning
Exposing
Exposing
Film positioning
Role of the diaphragm
LIST OF TABLES
Title
Exposure time table
Film type table
Correction table (voltage)
Time setting table
Main causes of poor films
Page
10
11
12
14
Page
13
14
15
16
I. INTRODUCTION
The 70-X intra-oral system is an X-ray unit for dental use, which, in order to give full satisfaction
and to ensure perfect use, should be installed by skilled personnel following the electrical and mecha-
nical instructions carefully. The purpose of this manual is to recommend proper operating proce-
dures and to provide the required information for using the 70-X intra-oral X-ray system.
il. IDENTIFICATIONS LABELS
70-X components have identification labels that specify the model number, serial number and appli-
cable product approval testings. These components are subject to US Governement Radiation Per-
formance standards 21 CFR, Sub Chapter J.
lli. DESCRIPTION OF MAIN COMPONENTS
See Figure 1.
3.1 Tube housing assembly (tubehead)
The tube housing assembly AD 17 includes an X-ray tube and a high voltage transformer. These
components are immersed in oil inside the tubehead.
An aluminium filtration system X-ray beam quality and reduces the patient radiation exposure. The
focal spot {X-ray source) is externally located. The X-ray beam can be easily aligned with the angu-
lation scale, the directing handle and the beam limiting device (Cone).
3.2 Beam limiting device (Cone)
It establishes the distance from the X-ray tube to the patient’s skin and assists in positioning the
tubehead.
It limits the X-ray beam a 21/6 (5,5 cm} diameter circle at the end of the cone. Its focal length
IS 8’ = {20,3 cm).
Wall bracket -—— E.
3.3 Wall mounted arm (suspension)
This is an articulated, counterbalanced arm which enables correct positioning of the tubehead
with respect to the patient. At the end of the arm, there is a co-axial connector for the electrical
and mechanical connections of the tubehead. Its maximum reach is 65" 3/8 (166 cm) with a
23° 5/8 (60 cm) cm extension arm, or 73'' 1/4 (186 cm) with a 31" 1/2 (80 em) extension arm.
3.4 X-ray control
It contains electronic circuitry that controls exposure time. It can be installed either in the wall
mounted bracket or in a separate wall box.
Plastic cover
In board arm
Out board arm
Extension arm
X-ray tubehead
BLD CONE
FIGURE 1
IV. 70 X X-RAY CONTROLS
1) Film type selector (T)
Set the timer to the type of film being used.
2) Program keyboard (P)
Press the number of the tooth to be X-rayed
3) X-ray indicator (Y)
Orange indicator that lights up while X-rays are being emitted
4) Power-on indicator (1)
Green indicator that lights up when the unit is switched on
5) Fuse (F)
Overioad protection
6) Power switch (5)
Set to | to switch on
7) Connector for control cord {Z)
8) Control cord (X)
A 10" (3 meter} coiled cord connected to the CCX control box with a pushbutton and an orange
indicator light (Y)
Press the pushbutton to make an exposure and hold it down until the end of the exposure.
Release it when the orange indicator (Y) and (Y') have gone out.
9) RVG program (R)
Press the RVG key when the TROPHY RadioVisioGraphy system is to be used (refer to RVG user's
manual)
10) Alarm lights (A) (MI)
(A) indicates a malfunction in the tubehead, the power circuit or the microprocessor
Switch off the timer and call the Trophy technical service or a qualified technician
{M) indicates an operator error
11) BITE WING program (B)
Press B to make a BITE-WING X-ray
12} OCCLUSAL program {OQ}
Press (0) to make an OCCLUSAL X-ray
13) Tubehead selector (G)
(the CCX timer can run two X-ray tubeheads)
Press 1 or 2 according to the tubehead to be used.
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P Program for A Alarm
adult mandible indicator
G' Generator
selector
P Program for keys
child mandible
G
B Bite wing
Exposure
keys
R RadioVisioGraphy
function key 0 Occlusal
Exposure
keys
S Power switch
T Film
speed
selector
r for: Warning: This X-ray unit may be dangerous to FUSE ; 1
€ connesto d patient and operator, unless safe exposure factors 12 AT ; F Power
contro. cor and operating instructions are observed mov supply
U e | ST nas! i fuse
X Handswitch
у’ Х-гау
indicator
V. GENERAL SPECIFICATIONS
Cooling and duty rating specifications apply for altitudes up to 12.000 ft (3.600 m) average rela-
tive humidity not exceeding 95 percent, and maximum room temperature not exceeding 80° F
(27° C).
5.1 Power supply requirements
* Line voltage must be in the range of 99 to 125 volts rms, 60 Hz
Abrupt changes in voltage caused by other loads should be infrequent and of short duration.
* Line current (during an exposure) : 10 amps maximum.
Technical specifications constituting the maximum line current condition are fixed at 70 Kvp and
8 mA.
® Line voltage fluctuation must not exceed 3 percent at 70 Kvp-8 mA
5.2 Accuracy of technical specifications
Peak tube potential : 70 Kvp +12 %
Tube current : 8 mA +15 mA
Exposure time : see exposure time table page 6
With nominal line voltage 110 V. Time accuracy is :
+.03 sec for times less than to .20 sec
+.05 sec for times equal or greater than .20 sec
5.3 Tube head specifications
Maximum rated peak tube potential :
70 Kvp at 8 mA tube current.
Minimum filtration {permanently installed in the useful beam)
equivalent 1,b mm aluminium at 70 Kvp.
Radiation leakage : less than 100 mR in one hour at 50 cm with 8 mA (maximum rated conti-
nuous tube current) and 70 Kvp (maximum rated peak tube potential)
Typical half value layer : 1,8 mm aluminium at 70 Kvp.
Line voltage : possible adjustments with three settings of 100 V, 110 V and 120 V.
5.4 Cone specifications
X-ray field size : containable in a 6 cm maximum diameter circle, measured at the end of the atta-
ched cone.
Distance from the focal spot to the end of the cone is 8’ - (20,3 cm)
5.5. Measurement bases
® Filament Warm-up :
Each exposure is preceded by a filament warm up time about .28 seconds. During this time, a
low level of radiation is produced. The peak tube potential varies during the filament warm-up from
approximately 40 to 60 Kvp. Although the amount of radiation produced during this time is small,
it is useful and contributes to forming the image on the film.
Peak tube potential
Direct measurement of steady-state peak voltage across the X-ray tube, using a peak voltmeter
and high voltage probes.
EXPOSURE TIME TABLE
Nominal line voltage 110 V
PRESETTING TIME/sec. FILM TYPE
SELECTION VARIATION % COEFFICIENT
ADULTS 1 — 75 % .25
42. 41. 31. 32 24 2 — 50 % 50
44. 43. 33. 34 ‚24
46. 45. 35. 36 ‚30 3 - 375 % 625
48. 47. 37. 38 ‚30 4 - 125% 86
5 0 % 1
12. 11. 21. 22 .30 6 + 40 % 14
23. 24. 13. 14 .30
25. 26. 15. 16 ‚38 / + 80 % 1,8
27. 28. 17. 18 ‚46 8 + 140 % 2.4
9 + 220 9% 3.2
CHILDREN 10 + 300 % 4
82. 81. 71. 72 16
83. 84. 73, 74 22
85 - 75 24
52. 51. 61. 62 ‚20
63. 64. 53. 54 ‚20
55 - 65 ‚26
BITE-WING
INTERPROXIMAL
Cuspids/incisors ‚24
Pre-molars/molars ‚30
OCCLUSAL
Maxillary ‚60
Mandibular .60
Table 1
® Tube current:
Direct measurement of the steady state average current using a milliamp meter.
* Exposure time :
The total time is equal to the filament warm up time of .28 sec plus the selected exposure time
plus the time of demagnetizing of .10 sec.
The selected exposure time is measured through an electronic chronometer to the timer output.
e Half value layer :
Is measured on an unused system installed on 110 V, 60 Hz line with 3 % regulation and calibra-
ted to the midrange values of the manufacturer's recommendations. Film type on 10 ; program
(27.28).
5.6 Duty cycle
The maximum allowable duty cycle is 1: 30. That is a user or service person must not exceed
one unit of ‘on-time’ for every 30 units of ‘’off-time”
The cooling curve and duty cycle of 70-X tubehead can be seen in figures 4 and 5.
Min.
FIGURE 3
X-ray tube model DG 073
Anode cooling curve
(kVp x mA x sec.)
Heat units
a
12 000
8 900
6 000
4 000
2 000
10 000 \
160
7 mmx. 7 mm
: 70 Kv
8 milliampers
: Grid regulation
X-ray specifications
Maximum rated current
Type
Focal spot size
Service voltage
Time (minutes)
140
120
100
80
60
40
>
20
FIGURE 4 Tube housing assembly, model AD 17 Cooling curve
Stored heat units
(kVp x MA x sec.)
Cooling time
{minutes}
200,000
150,000
100,000
50,000
3.00
2.30
2.00
1.30
1.00
0.30
FIGURE 5 Duty cycle
Vi USE
6.1 Patient positioning
The patient should be positioned on the vertical “sagittal”” plane (see figure 6) :
— X-ray of upper maxillary : the plane through the nose and ears should be horizontal (Frankfurt)
— X-ray of lower maxillary : the occlusal plane should be horizontal.
6.2 Tubehead positioning
The articulated, counterbalanced arm enables correct positioning of the tubehead for all types of
exposures.
The beam limiting device (Cone) determines the minimum source-to-skin distance, enabling cor-
rect exposure. To avoid distortion, it is possible to place the film parallel to the axis of the tooth
(see figure 7) ; pictures obtained under these conditions should be of acceptable geometrical qua-
lity but they produce smaller dimensions than the conventional! method,
6.3 Making exposures
Place the unlabelled side of the film against the area to be X-rayed.
A. Figure 8 shows the film position and the angle of the tubehead under the bisecting technique.
The patient should hold the film with his thumb, keeping the other fingers outside the X-ray beam.
B. Figure 9 shows the position of the film and the tubehead under the parallel plane technique ;
here, a film holder should be used. Figure 10 shows the film position and angle of the tubehead
in the case of bite-wing and occlusal techniques.
FIGURE 6 : PATIENT POSITIONING
FIGURE 7 : TUBEHEAD POSITIONING
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6.4 USE OF THE TROPHY CCX CONTROL (AD 33)
— Set the switch (S) to position (1). The green power on indicator (I) and the green tubehead #1
indicator (G) will light up in succession.
— If necessary press key (G') to use tubehead $2.
— Set the FILM TYPE selector (T) for the type of film being used. (see table 2 below)
SELECTING THE EXPOSURE
— Press either the key (P) corresponding to the number of the tooth being X-rayed or one of the
special exposure keys. The green indicator (B) or (0) on the key selected will light up (see page 4).
— To make an exposure, press the button of handswitch connected to socket (Z) and HOLD IT
DOWN throughout the exposure. The orange indicator (Y) and the indicator in the button (Y) will
< light up and a sound signal will indicate the emission for X-ray. Release the button when the sound
signal has stopped and the orange indicators (Y) (Y”) have gone out.
© The green indicator on the selected program key will then start flashing indicating the thirty-second
> rest period that must be observed after every exposure. If another exposure is attempted before
O the end of the rest period the red operator error indicator (M) will light up and the buzzer will sound
E intermittently. |
© Push any program key to stop it.
a a After thirty seconds, the green indicator stops flashing indicating that the timer is ready for ano-
D «is ther exposure.
— ml
_ = SPECIAL FUNCTION
я — Making exposures with the TROPHY RVG system (Radio-Visio-Graphy - consult TROPHY for
2 further information or consult the RVG user's manual)
Q
5 — Tubehead selector
With the CCX timer, the same control panel can be used for two tubeheads. (see assembler's Manual
for connection instructions)
Press #1 or #2 on the key selected (G) (G') page 4
— Bite wing
FIGURE 10 : FILM POSITIONING
E
и > SH с Press the key which corresponds to the exposure desired
o E (B) for incisors
"E for cuspids
— Occlusal!
90°
Press the key which corresponds to the exposure desired
{O) for the mandible
for the maxillary
TABLE 2
© “FILM TYPE” SETTING according to the film type used
=
= KODAK Ekta Speed oo. 2
ui DENTAL UNION (German) Bleu star. ...........e.esereererere ve. 3
E EMMENIX (USA) ee ee ee 4 a ER nora 3
a FLOW X-RAY (USA) ee ee ee ee sess ee 5
ADOX (German) Super .. 11222044 1 244 4 4 4 Va квн ние, 5
AGFA (German) Normal .......co..onm]enocoariredo ade. 5
DUPONT (USA) Lightning fast. ..................... ... 5
GAVAERT (Belgium) Dentus Ultra Rapid... .................. 5
KODAK (USA) Ultra Speed. .........eserroererera re... 5
RINN (USA) Super fast. ........reesrerrene dera ee 5
FERRANIA (Italy) 2222ER 200 6
MINIMAX (USA) Intermediate . .......... 0 7
RINN (USA) Extra Fast. ........ cin 7
12
13
SPECIAL FEATURES OF THE ELECTRONIC CONTROL 70 X TIME SETTING TABLE FILM TYPE SELECTOR
PRESET POSITION | ANGLES [TIME/sac. pr VARIATION % COEFFICIENT
Select the setting indicated in table 4 (page 15). This setting will be respected if the power sup- | ADULTS 1 - 75 % 25
plied Is exactly 110 Volts (in-load). 42. 41. 31. 32 _15 24 2 _ 50 % 50
44. 43. 33. 34 —20 ‚24 3 — 375% 625
46. 45. 35. 36 —-10 .30 4 _ 125% 86
48. 47. 37. 38 — 5 .30 5 о ®% ;
| 12. 11. 21. 22 +40 .30 6 + 40 % 14
DO NOT RELEASE THE HANDSWITCH UNTIL THE SELECTED EXPOSURE 23. 24. 13. 14 +45 | -.30 7 + 80 % 18
TIME TERMINATES AUTOMATICALLY. IF THERE IS ANY APPARENT PROBLEM, 25. 26. 15. 16 +30 | -38 8 + 140 % 24
ESPECIALLY IF THE TIMER DOES NOT TERMINATE PROPERLY, RELEASING THE ‘ 27. 28. 17. 18 +30 | 46 9 + 220 % 32
HANDSWITCH WILL STOP THE EXPOSURE IMMEDIATELY. |
CHILDREN 10 + 300 % 4
| 82. 81. 71. 72 —15 16
LL, . * To decrease the contrast (picture over exposed)
6.5 Role of the beam limiting device (cone) 83. hs = 74 о a Adjust the film type selector to a lower setting
The beam limiting device is for limiting the beam to a maximum 6 em diameter at 20 em distance : | * To increase the contrast (picture under exposed)
this minimizes patient exposure to radiation. 52. 51. 61. 62 +40 .20 Adjust the film type selector to a higher setting
63. 64. 53. 54 +45 .20
Be careful to keep the film within the X-ray beam. If the beam has not been correctly centered, 55 - 65 +30 ‚26
the film will be only partially exposed (see fig. 11) |
BITE-WING
INTERPROXIMAL
Cuspids/Incisors .24
Pre-molars/molars .30
OCCLUSAL
Maxillary .60
Mandibular .60
TABLE 4
FIGURE 11 : ROLE OF THE DIAPHRAGM
14 15
VII. MANUAL FILM PROCESSING
Film processing has to be carefully carried out to obtain a good film.
a/ In a dark-room, take the film out of its pack very carefully, to avoid finger-prints or scratches.
b/ Put it into the developing solution and agitate it for a few seconds then let it rest for either
5 min. at 20° C, 6 min. at 18° C or 4 min. at 22° C.
c/ Rinse it with clean water for about 20 seconds.
d/ Put it into the fixing solution and agitate it for a few seconds : let it rest then for at least 5 min.
e/ Wash it with clear water. Good preservation of the film is assured by thorough washing.
f/ Let it dry in the open away from dust
(operations “e) and “f) can be done in daylight)
Developing baths should be properly mixed according to manufacturer's instructions and should
be frequently renewed. It is not good just adding developing solution to strengthen solution, because,
although this increases contrast, it lowers definition. Table 5 summarizes the main causes of poor
films.
MAIN CAUSES OF POOR FILMS
FILM EXPOSURE TIME ¡DEVELOPMENT TIME | SOLUTION QUALITY POSITIONING
Under exposed too short too short too cold —
Over exposed too long too long too hot —
Lack of detail — too short too cold or —
too old
Blurred — — — Patient moved
Off center — — — Poor angulation
TABLE 5
16
Vill. 70-X MAINTENANCE SCHEDULE
In the interest of equipment safety a maintenance program must be established. It is the owner's
responsability to arrange for this service, and to assure that the service personnel are fully quali-
fied to service 70-X Dental X-ray equipment. We recommend using technical staff from the TROPHY
dealers.
The system and function check is to be performed at instaliation and every twelve months the-
reafter or when any certified component is replaced.
SYSTEM AND FUNCTION CHECK
1/ TUBE HOUSING ASSEMBLY (TUBEHEAD)
a. Check that the certification label is legible and intact.
b. Check that there is no oil leakage and no physical damage that could cause unsafe radiation.
2/ CONE (BLD)
a. Check that the certification label is legible and intact.
b. Check that the BLD is securely attached to the tube housing assembly.
c. Check for physical damage and that the BLD allows a minimum source to skin distance of 8”
{20 cm)
3/ MOUNTING
a. Check that the wall mounting is attached well and rigid.
b. Check the arm in all positions for wear and looseness.
17
4/ X-RAY CONTROL
a. Check that the warning label and the certification label are legible and intact.
b. Verify that the exposure handswitch and the coiled cord are in good condition and that the expo-
sure pushbutton releases.
c. Select key (27.28) film type 5. Make an exposure and check that the yellow lights (Y) (Y) are
working.
d. Select key (27.28) film type 5. Make an exposure and check that buzzer is audible to the opera-
tor and ceases to beep at the end of the exposure.
e. Autotest of the timer
— turn off the timer (position (O)}
— press and hold the RVG key (R) and turn the timer on (position |} simultaneously
— the green light key (17.18) lights
— release the RVG key automatically each function and program wili be tested.
Each LED lights, one by one, and, at the end of the cycie “the buzzer” gives a short “beep” to
inform you that the test is finished.
5/ ELECTRICAL REQUIREMENTS (FOR QUALIFIED TECHNICIAN ONLY)
a. Check that the line voltage and line voltage regulation are both within the limits specified in
the GENERAL SPECIFICATIONS. If necessary, change the voltage distributor setting on the tube-
head according to this table :
setting
99 to 108 V 100 V
109 to 118 V 110 V
119 to 125 V 120 V
b. Check the ground connections to the unit.
c. Verify that the main power switch and green light operate.
6/ USER'S MANUAL
At the end of this check, verify that the user has a USER'S MANUAL.
18
IX. TROUBLE SHOOTING CHART
MALFUNCTION
CAUSE
CORRECTIVE ACTION
Unit completely out of
function
A - Unit unplugged
B - Defective fuse
C - Timer circuit breaker off
A - Plug unit in
B - Replace defective fuse
C - Set timer circuit breaker
on
No exposure
A - Timer connection not
installed
B - Concentric pin contacts
dirty or damaged
C - Wires broken in the
balance arm
D - Defective tubehead
Cali a qualified technician
Exposure OK
but film develops clear
A - Tubehead not directed
towards film
В - Exposure time too short
С - Developing time too short
D - Chemical solution too
cold or too old
E - Power supply lines too
weak
F - Film positioned
backwards
À - Direct tubehead towards
films
B - See film position
{table 2 page 13)
19
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troph y U.S.A. Inc.
PO. BOX 1744
225 INDUSTRIAL DRIVE. FREDERICRSBL RG. V.A. 22402 —- TEL..(703) 898 1216 TELEX 64720
11 XANdIAN
20417 S9€7 -
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