New Life Radiology MQI006-0 Installation And User Manual Download Page 62

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MANUAL

Doc. HBE090-3

Installation and User Manual EVOSTYLE N.G.

Mod. MQI006-0

NEW LIFE RADIOLOGY S.R.L. Corso Giuseppe Canonico Allamano 13/15 INT.G - 10095
Grugliasco (TO) Italy Phone and fax + 39.011. 781994 [email protected]
www.newliferadiology.it

Characteristics of the X-ray tubes KL2-0.8-70G and Toshiba DG-073B-
AC

X-ray tube Technical description

Target material that characterizes the radiation spectrum :

Tungsten

Reference axis for target angle and focal spot

characteristics:

Orthogonal to the anode-cathode

axis

Target angle compared to the reference axis:

19° from the axis Kailong KL2-0.8-70G;

20° from the axis Toshiba DG-073B-AC

Focal spot value for the reference axis comply with IEC

60336:

0,8 mm Kailong KL2-0.8-70G; 0,7 mm

Toshiba DG-073B-AC

Filtration:

eq. 1 mm + 1 mm Al added,
not removable without tools

X-ray tube nominal voltage:

70kV

Current intensity and frequency:

8mA 50 Hz

Operating cycle:

1/30

X-ray tube- sheath assembly technical description

Reference axis for angle of the target and characteristics

of the focal spot:

Orthogonal to the anode-cathode

axis

Target angle compared to the reference axis:

19° from the axis Kailong KL2-0.8-70G;

20° from the axis Toshiba DG-073B-AC

Focal spot value for the reference axis comply with IEC

60336:

0,8 mm Kailong KL2-0.8-70G; 0,7 mm

Toshiba DG-073B-AC

Load factors values concerning radiation leakage:

1/30

Classification:

Class IB (IEC 60601-1)

Data for high voltage connections:

See detailed figures

High voltage connection polarity:

Phase and Neutral (sinusoidal

alternating current)

Precautions to be observed to installation completed

before the first load:

None

Beam limiting devices technical description

Limiter beam (cone collimator) coated in lead:

distance FFD 200 mm max



60 mm

mod. C.L.01

Technical description of the X-ray radiant complex for diagnostic

Reference axis at which the slope of the anode and the
characteristics of the focal spot refer:

Orthogonal to the anode-cathode
axis

Anode slope compared to the specific reference axis:

19° from the axis Kailong KL2-0.8-70G;
20° from the axis Toshiba DG-073B-AC

Focal spot position on the reference axis:

See detailed figures

Focal spot value for the reference axis comply with IEC
60336:

0,8 mm Kailong KL2-0.8-70G; 0,7 mm
Toshiba DG-073B-AC

Summary of Contents for MQI006-0

Page 1: ...Manuale Doc HBI090 2 Manuale di Installazione e uso EVOSTYLE N G Mod MQI006 0 EVOLUTION LINE INSTALLATION AND USER MANUAL Mod MQI006 0 Doc HBE090 3 ...

Page 2: ... symbols 8 Symbols for transportation and storage 9 Information for installation 10 Utensils and tools required for installation not supplied 10 Electrical indications 10 Wiring and connection conductors sections 10 Installation 12 Instructions for installation in wall mode 12 Wall plate installation 16 52 Preventive maintenance 55 Extraordinary maintenance 56 Safety aspects 64 Possible drawbacks ...

Page 3: ...MANUAL Doc HBE090 3 Installation and User Manual EVOSTYLE N G Mod MQI006 0 Film positioning 66 ...

Page 4: ...The use of X ray sources for purpose of medical diagnostics is subject to specific authorizations and or communications to the Authorities responsible for vigilance The User is responsible for the use unauthorized of the plant The User of the X ray plant for dental complementary radiology is also required without exception to observe the regulations governing the safety of exposure to ionized radi...

Page 5: ...y However it may be appropriate to avoid installing the equipment in the immediate vicinity of other electrical equipment with which you could generate mutual electromagnetic interference fields It is also important to avoid the use of electrical appliances eg electrosurgery cell phones etc near the appliance during its use Articulated support double pantograph with wall support or mobile The mono...

Page 6: ... timer operation is managed by means of the button with wire The x ray delivery is managed through consent to dead man s switch so as to ensure maximum security both for the operator and for the patient The timer of the control panel is provided with membrane digital keys in order to facilitate the use The timer does not allow the use of radiographic in fluoroscopy The time scale set with the fact...

Page 7: ... 6 sec In this situation it blocks the continuity between the control unit and the monoblock thus preventing the emission of anomalous X ray In case of intervention of the THERMOSWITCH this will be replaced this operation requires a service call to technical assistance Drawings schematics components lists instructions for repairs New Life Radiology is committed to providing upon request drawings c...

Page 8: ... kW Supply voltage 230V 50 Hz single phase Absorption 6 A Focal spot value for the reference axis comply with IEC 60336 0 8 mm Kailong KL2 0 8 70G 0 7 mm Toshiba DG 073B AC Anode current 8 mA Total filtration 2 mm Al eq Time emission cooling ratio 1 30 Maximum emission time 3 00 s Dispersed radiation 0 25 mGy h a 1 m by focus Intermittent functioning 1 sec ON 30 sec OFF Control logic dead man s sw...

Page 9: ...y Load Factors Voltage accuracy 5 Current accuracy 3 Time accuracy 5 Dose accuracy 5 Other Data Maximum current automatic switches for the feeding net Magnetic thermal switch from 10 A CEI 23 3 High voltage measure method Not invasive method Current measure method in the radiogenic pipe See page 45 Charge application time determination method Not invasive method Interposition aluminium filter betw...

Page 10: ...ycle of 1 30 1s ON 30s OFF Classification according to Directive 2007 47 EC Legislative Decree no 37 2010 Class IIb Protection against electrical dangers Class I Protection degree against the direct and indirect contacts Equipment with parts applied type B Protection degree against water penetration Common equipment IPX0 Use safety degree in presence of inflammable anesthetic mixture Equipment not...

Page 11: ...d Earth protection O Switch open disconnected from mains supply I Switch close connected to mains supply Red point placed on the cover of the unit indicate focal spot Alternating current Radiation emission symbol Follow annex instructions Symbol in conformity with European Directive 2002 96 Ec Weee The symbol indicates that this product should not be treated as household waste but should be handed...

Page 12: ...ewliferadiology it www newliferadiology it 9 Manufacturer Symbol in conformity with Community Legislation The symbol is followed by a number which identifies the notified organism which certifies and monitors such compliance REF Product Code SN Equipment Serial Number To be used for all communication with manufacturer service technician TUBE X ray Tube Serial number Symbols for transportation and ...

Page 13: ...the Country actual standards Electrical indications All works for the feeding electric plant must be performed in conformance with the actual reference standards for plants and locals for medical use CEI 64 8 710 A feeding of 230 240 V to 50 Hz is required For the phase conductors neutral and ground the minimum section must be of 1 5 mmq of copper It recalls the necessity to perform the ground con...

Page 14: ...especting the symbols indicated for connection F Line brown N Neutral blue T Ground yellow green Point A grounded power cord Point B output external lamp Check carefully all connection cables plugs and line contacts Remember that the suppliers must support a current of at least 10A The connection to the external lamps must be done by connecting the output LAMP indicated with the letter B in the fi...

Page 15: ... newliferadiology it 12 Installation CAUTION To avoid the risk of any electric shock this device must be connected only to power mains gifted with ground protection The installation is provided in both wall and mobile version on column Instructions for installation in wall mode The system in wall version consists of the components shown in the following legend A wall plate timer B extension C doub...

Page 16: ...STYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 13 Quotas with relative useful space EXTENSION FROM mm 400 ...

Page 17: ...STYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 14 Quotas with relative useful space EXTENSION FROM mm 800 ...

Page 18: ...TYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 15 Quotas with relative useful space EXTENSION FROM mm 1100 ...

Page 19: ... Plot on the wall the position of the six holes making sure to check the perpendicularity with a plumb line If the electric plant is recessed track also the corresponding hole Fig 2 Drill six holes on the wall starting with the tip of 7 enlarging gradually This to not demolish the stability and maintain under control the interaxes For walls of full or holed or cement bricks use metallic plugs pref...

Page 20: ...RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 17 Extension installation Extract the SEGER from the extension B and enter it in the wall plate A as shown in fig 3 fig 3 ...

Page 21: ...6 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 18 Replace the SEGER unhook the front cover and remove the lower strip cover strips fig 4 fig 4 ...

Page 22: ...nd fax 39 011 781994 info newliferadiology it www newliferadiology it 19 Double pantograph arm installation Enter the double pantograph arm C in the extension B and route the cable as shown in Figure 5 Close the extension repositioning the lower strip cover strips Connect the cable from the double pantograph arm to output of THERMOSWITCH and the ground wire IN in its slot fig 5 ...

Page 23: ...o TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 20 Monoblock installation Before inserting the monoblock D it is essential to work in safety by opening the double pantograph arm C as shown in fig 6 to avoid that it snaps abruptly since it has the springs charged and calibrated to support the weight of the monoblock fig 6 ...

Page 24: ... R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 21 Unscrew the screw from the front tubular carrier of the double arm pantograph C by lifting the cylinder and remove the half moon fig 7 fig 7 ...

Page 25: ... Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 22 Insert Monoblock D in the double pantograph arm C as shown in Fig 8 fig 8 ...

Page 26: ...LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 23 Reinsert the half moon in its slot Lower the cylinder securing the double arm pantograph with the screw fig 9 ...

Page 27: ...gy it 24 Settings After installing the equipment make a dynamic test to ensure that the movements of the assembly are properly calibrated Clutch screws adjustment If necessary adjust the clutch screws of the wall plate A and the extension B as shown in fig 10 fig 10 After making the adjustments necessary to close the wall plate with the respective cover making sure to replace the lower back lining...

Page 28: ...bration must be performed as follows with reference to fig 11 if it was found that the section A is spread when the double pantograph tends to go back it means that the spring is too tight and in this case we must unscrew slightly the push spring nut through the socket wrench supplied To do this tilt the section A of about 15 and insert the socket wrench into the hole 1 and unscrew slightly If on ...

Page 29: ...adiology it www newliferadiology it 26 Instructions for installation in column mode This device is not intended for mobile use the wheels are intended for a better positioning of the main appliance above the patient The system in column mode consists of the components shown in the following legend Detail C A cart B vertical support C plate holder timer button with spiral cord D double pantograph a...

Page 30: ...Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 27 Quotas with its useful space Fig 12 ...

Page 31: ...ax 39 011 781994 info newliferadiology it www newliferadiology it 28 Column assembly The first procedure to be carried out is to assemble the carriage A this is done by mounting the two tubular 1 and 2 on the base 3 using four screws 8x20 as shown in fig 13 Fig 13 Once assembled the cart A is possible to fix on it the vertical support B using 4 screws 6x20 as shown in fig 14 fig 14 ...

Page 32: ...asco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 29 Insert the two handles provided into the hole as in fig 15 fig 15 Installing double pantograph arm By passing the power cord coming from the vertical support B through the hole fix the plate support timer C to it using four screws 3 5x6 5 as shown in Fig 16 fig 16 ...

Page 33: ...iuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 30 Insert the double pantograph arm D in the vertical support B as shown in fig 17 fig 17 Connect the cable coming from the vertical support B to the input of the timer ...

Page 34: ... RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 31 and the cable coming from the double pantograph arm D to the output of the THERMOSWITCH as shown in figure 18 fig 18 ...

Page 35: ...posure times of the monoblock at the same time guarantees maximum safety in the use of X ray tubes for electro medical purposes for intraoral diagnostic The timer control panel is provided with membrane digital buttons so as to facilitate its use The timer functioning is managed by button with spiral cord to dead man s device in such a way as to ensure maximum safety for both the operator and pati...

Page 36: ... Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 33 A B Description of the timer control panel Following is the symbolism used on the front panel of the timer fig 19 A Button with cable B Light emission radiation ...

Page 37: ...3 Tooth type Pre molar n 14 15 24 25 34 35 44 45 Tooth type Molar n 16 17 18 26 27 28 36 37 38 46 47 48 Selection button increasing manual mode Selection button decreasing manual mode Patient selection button Normo type Patient selection button Child Selection button Digital radiography Times memorization button Selection button Reset It allows resetting the device to factory defaults Selection bu...

Page 38: ... the switch on I as shown in fig 20 for both the mural and column version fig 20 When you turn on the display will appear for about one second the 1_02 number that indicates the version of installed software subsequently a number which can vary from 0080 to 0220 indicating the optimum start given to the tube expressed in ms also this value will be visible for about one sec and finally the timer wi...

Page 39: ...he operator s needs The tables below show the programmed time scales depending on the type of film or sensor used with the relative dose value expressed in milligray mGy that it has at 20 cm from the focus tube this value is to be considered an estimate of the emitted dose and it should not be understood as a measure of the same Film type Fast Upper jaw Lower jaw Tooth type Patient type 160 ms 1 2...

Page 40: ...1994 info newliferadiology it www newliferadiology it 37 Film type Slow Upper jaw Lower jaw Tooth type Patient type 400 ms 3 09 mGy 600 ms 4 63 mGy 640 ms 4 94 mGy 800 ms 6 18 mGy 260 ms 2 00 mGy 320 ms 2 47 mGy 400 ms 3 09 mGy 500 ms 3 86 mGy Tooth type Patient type 400 ms 3 09 mGy 400 ms 3 09 mGy 400 ms 3 09 mGy 500 ms 3 86 mGy 250 ms 1 93 mGy 250 ms 1 93 mGy 250 ms 1 93 mGy 320 ms 2 47 mGy ...

Page 41: ...t manually using the button to decrease it and key to increase it every time pressure is increased decreased by 20 ms and you can save that time by pressing the button During operation we recommend the use of protective devices such as collars and aprons To perform the exposure once positioned the cone along the monobloc on the area to be Tooth type Patient type 120 ms 0 92 mGy 160 ms 1 23 mGy 200...

Page 42: ...exposure time Once the exposure is finished must wait until the timer runs out the pause time to make the next radiography the timer is paused until the display will flash the time of the last exposure made If the timer is left on without performing any activity for about 15 minutes it will be on standby In this mode the display will be turned off and only the adult patient led will be turned on T...

Page 43: ...TION Err1 The A button turns out to be pressed while pressing the system power button Turn off and turn on again the device Should such problem persist it means that the button is blocked in the normally closed mode Substitute the button Err2 The A button is released prior to the end of the exposure time In order to get out of the error press a button from the keyboard at the end of the cool in pr...

Page 44: ...diology it www newliferadiology it 41 Possible failures Below there are some possible failures that might occur and their recovery procedures Must always disconnect the unit from the mains supply before starting any maintenance or inspection activities TIMER DISPLAY DOES NOT SWITCH ON If the timer s display does not turn on first check that the fuses are intact as shown in fig 21 fig 21 wall colum...

Page 45: ...gy it 42 LOSS OF DATA SET IN THE TIMER If there is a loss of data set on the timer a possible solution is to reset it bringing it to the factory settings This operation is effected by holding down the RESET button and turning on the system all of the teeth LEDs light up and then release the RESET button Wait until the software version appears and the exposure time In this way the system is reset a...

Page 46: ...co Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 43 THE MONOBLOCK DOES NOT EMIT X RAYS If the monoblock does not emit X rays as first check the continuity of the THERMOSWITCH if this test is negative you must bypass it as shown in fig 23 fig 23 ...

Page 47: ... TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 44 If after this operation there is still no x ray emission the problem must be sought through a tester in the continuity of the power cord that goes from the monoblock to the timer Using a tester to check the continuity between the points A and B as shown in figure 24 fig 24 ...

Page 48: ...nt of the radiant tube proceed as follow press the button and at the same time turn on the system When a number appears on the display release the button Such number is equivalent to the pre heating time actually present in the memory In order to vary such time press the directional button if you want to increase the pre heating time or the directional button to decrease such time Once the desired...

Page 49: ...ewliferadiology it www newliferadiology it 46 Measurement of the filament current The measurement of the filament current can be carried out through the use of an oscilloscope or by means of a digital multimeter To perform this measurement proceed as follows After removing the back cover referring to Fig 25 Unsolder the wire from the connector at point A and connect in series a resistance from 1KΩ...

Page 50: ...as shown in fig 26 the order of magnitude of exposure time to perform the current measurement is of a few hundred ms fig 26 If the measurement is performed correctly it is expected to see an average value of about 8 V to each V corresponds 1 mA Measurement using the digital multimeter It is necessary to set the full scale of the multimeter in an appropriate manner in order to measure the voltage a...

Page 51: ...ed out dosimetric measurements to verify correct operation These measures are carried out by a special instrument cluster with the following procedure The instrument used for dosimetric measurements is the RTI ELECTRONICS PIRANHA 255 Is positioned the instrument at a distance of 50 cm from the fire hose and found the dose values expressed in mGy It checks the performance of the X ray tube is in co...

Page 52: ...0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 49 Plates positioning Below in fig 27 it shows the layout plates positioning on EVOSTYLE N G fig 27 ...

Page 53: ... newliferadiology it 50 Description plate fields 1 TUBE It indicates the model of the X ray tube used 2 MAT XXXXXXXX It indicates the serial number of the X ray tube 3 TIMER XX E XYZ XX It indicates the year of manufacture E XYZ It indicates the number of the timer series 4 S N XX XY XYZ It represents the device serial number XX It indicates the year XY It indicates the month XYZ indicates the ser...

Page 54: ... and User Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 51 A wall version ...

Page 55: ...and User Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 52 B column version ...

Page 56: ...lation and User Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 53 B C ...

Page 57: ...llation and User Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 54 D ...

Page 58: ...controls are divided into blocks and the operator before starting the procedures of controls must ensure the availability of the instruction manual Radiogenic head monoblock plate integrity with the identification data Ionizing radiations warning signals integrity oil leaks absence verification complex integrity covers shells spacer cone attachment rotation system monoblock s correct anchoring ver...

Page 59: ...maintenance interventions are not carried out by the operator Extraordinary maintenance CARRIED OUT BY THE NEW LIFE RADIOLOGY SRL TECHNICAL ASSISTANCE IN CASE OF NEED AND IN ANY CASE AFTER RELEVANT REPAIRS We provide a guideline on controls on minimum checks that are to be performed in any technical intervention on the plant monoblock support and pantograph stability wear of the joints of rotation...

Page 60: ...the unit and the parts in contact with the patient You should always disconnect the unit from the mains power supply before starting cleaning activities and or disinfection The method used for disinfection must meet the regulations and the recommendations in force including those regarding the prevention of risks of explosion Cleaning and disinfection of the parts in contact with the patient The p...

Page 61: ... protective sheet taking care to turn it off well in advance so as to cool completely After the dispersion of the vaporized disinfectant remove the protective sheet and disinfect the device as described above Do not use the device in the presence of disinfectants which vaporize to form explosive mixtures and wait until the vapors have dissipated before using it Environmental protection The monoblo...

Page 62: ... the focal spot Orthogonal to the anode cathode axis Target angle compared to the reference axis 19 from the axis Kailong KL2 0 8 70G 20 from the axis Toshiba DG 073B AC Focal spot value for the reference axis comply with IEC 60336 0 8 mm Kailong KL2 0 8 70G 0 7 mm Toshiba DG 073B AC Load factors values concerning radiation leakage 1 30 Classification Class IB IEC 60601 1 Data for high voltage con...

Page 63: ...al EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 60 X ray tube type kailong KL2 0 8 70G fig 28 ...

Page 64: ...ser Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 61 Curve di riferimento fig 29 ...

Page 65: ...tion and User Manual EVOSTYLE N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 62 fig 30 ...

Page 66: ... N G Mod MQI006 0 NEW LIFE RADIOLOGY S R L Corso Giuseppe Canonico Allamano 13 15 INT G 10095 Grugliasco TO Italy Phone and fax 39 011 781994 info newliferadiology it www newliferadiology it 63 X ray tube type Toshiba DG 073B AC Reference curves fig 31 fig 32 ...

Page 67: ...e patient from diffused radiations it is recommended the adoption of protective clothing for dental use While executing x ray examinations there must not be other people in the room in addition to the patient All personnel present during an x ray examination must comply with safety regulations concerning protection against radiation For their own safety the operator must always keep a distance of ...

Page 68: ...he recommended range Dark image Possible causes Wrong dilution of developing liquid Too long exposure time to X rays Excessive development time Exposure liquid temperature higher than the recommended Not detailed image Possible causes Patient movement Monoblock movement Radiography partially exposed Possible causes Error in the centering between rays s beams and film Liquid development too low wit...

Page 69: ...e we recommend the use of films with high sensitivity and the respect of development time proposed by the manufacturer of the films shaking continuously films during the development itself If the image thus obtained is too dark it is necessary to decrease the X ray exposure time and not the development duration In the case of manual development it is good to know that the developer liquid preserve...

Page 70: ...39 011 781994 info newliferadiology it www newliferadiology it 67 According copyright laws this manual cannot be copied in whole or in part without the written consent of the New Life Radiology Although every effort is made to ensure the accuracy of the information contained in this manual the New Life Radiology does not assume responsibility for any mistakes omissions or inaccuracies ...

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