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DR 10s and DR 14s Exposure Sequence

Topics:

•

Modality Settings

•

Exposure Sequence

•

Calibrating DR 10s and DR 14s on DX-D 100

Modality Settings

The indicative exposure levels for each exposure are specified by the DR

Calibration Tool.

Table 4: Modality settings

Focus

large focus

SID

Use the (average) SID for normal operation.

Position

If the DR Detector is used in a fixed position, use

the same position for calibration.
If the DR Detector is used in different positions,

perform the calibration with the short side of the

DR Detector parallel to the axis of the X-ray tube.

 

Grid

Remove the grid.

Filtration

Mount the Agfa calibration filter (Cu 1.5 mm).

Check that there is no additional filtration.

Collimation

The collimation area should extend at least 1.5

cm on each side of the DR Detector.

20

 | DR Detector Calibration | Calibrating the DR Detector

0134I EN 20210924 1204

Summary of Contents for DR 10e C

Page 1: ...DR Detector Calibration Key User Manual 0134I EN 20210924 1204 ...

Page 2: ...ure Sequence 22 DR 18M and DR 24M Exposure Sequence 24 DX D 10C DX D 10G DX D 20C DX D 20G Exposure Sequence 25 DX D 25C Exposure Sequence 27 DX D 30C and DX D 35C Exposure Sequence 29 DX D 40C and DX D 40G Exposure Sequence 31 DX D 45C DX D 45G DX D 60C and DX D 60G Exposure Sequence 33 Fixed DR Detector 4343R Pixium RAD 4343 Exposure Sequence 35 Fixed DR Detector Pixium RF4343 FL Exposure Sequen...

Page 3: ...cts and services may not be available for your local area Please contact your local sales representative for availability information Agfa NV diligently strives to provide as accurate information as possible but shall not be responsible for any typographical error Agfa NV shall under no circumstances be liable for any damage arising from the use or inability to use any information apparatus method...

Page 4: ...Introduction to this Manual Topics Scope Disclaimer 4 DR Detector Calibration Introduction to this Manual 0134I EN 20210924 1204 ...

Page 5: ...R 14s DR 17e C DR 17e G DR 18M DR 24M DX D 10C DX D 10G DX D 20C DX D 20G DX D 25C DX D 30C DX D 35C DX D 40C DX D 40G DX D 45C DX D 45G DX D 60C DX D 60G Fixed DR Detector 4343R Pixium RAD 4343 Fixed DR Detector Pixium RF4343 FL XD 10 XD 10 XD 14 XD 14 XD 17 XD 17 DR Detector Calibration Introduction to this Manual 5 0134I EN 20210924 1204 ...

Page 6: ...t may appear in this document To improve reliability function or design Agfa reserves the right to change the product without further notice This manual is provided without warranty of any kind implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose Note In the United States Federal law restricts this device on order of a phy...

Page 7: ...Calibrating the DR Detector Topics About Gain Calibration Calibration Frequency Calibration Workflow DR Detector Calibration Calibrating the DR Detector 7 0134I EN 20210924 1204 ...

Page 8: ...he panel and or corrects non unifomity in the X ray beam The sensitivity deviations of pixels across the DR Detector are affected by the quantity and pattern of the effective X ray dose on the detector Depending on the the panel type it will also correct dead pixels in the acquired images 8 DR Detector Calibration Calibrating the DR Detector 0134I EN 20210924 1204 ...

Page 9: ... 40G DX D 45C DX D 45G DX D 60C DX D 60G XD 10 XD 10 XD 14 XD 14 XD 17 XD 17 6 months DR 10e C DR 14e C DR 17e C DR 10s DR 14s DX D 25C DX D 30C DX D 35C Fixed DR Detector Pixium RF4343 FL 12 months Fixed DR Detector 4343R Pixium RAD 4343 3 months or 12 months depending on the DR De tector model A timely reminder is dis played on the NX worksta tion DR 14e G DR 17e G no calibration required Table ...

Page 10: ...each time on the same NX work station Do not calibrate the DR Detector on another NX workstation DR 18M DR 24M Fixed DR Detector The DR Detector can only be used on a single NX workstation Note If the system has multiple DR Detectors make a note of the ID that is mentioned in the message on the NX workstation indicating which of the DR Detectors must be calibrated The ID is required to identify th...

Page 11: ...24M Exposure Sequence DX D 10C DX D 10G DX D 20C DX D 20G Exposure Sequence DX D 25C Exposure Sequence DX D 30C and DX D 35C Exposure Sequence DX D 40C and DX D 40G Exposure Sequence DX D 45C DX D 45G DX D 60C and DX D 60G Exposure Sequence Fixed DR Detector 4343R Pixium RAD 4343 Exposure Sequence Fixed DR Detector Pixium RF4343 FL Exposure Sequence DR Detector Calibration Calibrating the DR Detec...

Page 12: ...etectors apart from DR 18M DR 24M and DX D 25C an Agfa calibration filter Cu 1 5 mm is required For calibration of DR 18M and DR 24M a calibration PMMA block is required 12 DR Detector Calibration Calibrating the DR Detector 0134I EN 20210924 1204 ...

Page 13: ...fore starting the NX workstation Allow the DR Detector to warm up before performing the calibration During warm up no exposures should be made Warm up time is one hour unless specified otherwise The ID of the DR Detector must be known The X ray generator is operational Make sure that there are no foreign objects in the exposed area e g stitching grid Move the floating tabletop to its normal positi...

Page 14: ...software console is started The splash screen is displayed Click the splash screen to make it disappear 4 Check the DR Detector staus in the software console or on the generator console if applicable If the DR Detector can be used on different NX workstations make sure that it is registered to the NX workstation where calibration is performed Note If the DR Detector status is displayed it may stay...

Page 15: ...field exposure and check that there are no abnormal inhomogeneities in the image If the calibration was successful the new calibration values are stored and used for all new exposures on the DR Detector Proceed with step 10 If the calibration was not successful the old calibration values are restored and the DR Detector remains operational In that case it is advised to check collimation and modali...

Page 16: ...osure Sequence on page 22 DR 18M and DR 24M Exposure Sequence on page 24 DX D 10C DX D 10G DX D 20C DX D 20G Exposure Sequence on page 25 DX D 25C Exposure Sequence on page 27 DX D 30C and DX D 35C Exposure Sequence on page 29 DX D 40C and DX D 40G Exposure Sequence on page 31 DX D 45C DX D 45G DX D 60C and DX D 60G Exposure Sequence on page 33 Fixed DR Detector 4343R Pixium RAD 4343 Exposure Sequ...

Page 17: ...7 XD 17 mAs indica tive value for second expo sure level 12 5 mAs XD 10 XD 10 4 mAs XD 14 XD 14 XD 17 XD 17 Focus large focus SID Use the average SID for normal operation Position If the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector paral lel to the axis ...

Page 18: ...ld To overrule the limitation the collimator must be unlocked using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the first exposure level 2 Make two exposures The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the required exposure level 3 Make 10 exposures 4 Set the mAs value to th...

Page 19: ...osed area of 10 by 12 cm is required WARNING It is not allowed to use a partially calibrated DR detector for human patients Procedure Make the exposures as instructed by the DR Calibration Tool The tool will detect the partial exposure and ask for confirmation that a partial calibration can be applied DR Detector Calibration Calibrating the DR Detector 19 0134I EN 20210924 1204 ...

Page 20: ...f the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube Grid Remove the grid Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is no additional filtration Collimation The collimation area should ext...

Page 21: ...dure 1 Set the mAs value to the indicative value for the exposure level 2 Make exposures as instructed by the DR Calibration Tool To avoid overheating of the X ray tube limit the rate of exposures to two per minute Calibrating DR 10s and DR 14s on DX D 100 On a DX D 100 mobile X ray unit that is upgraded to support DR 10s or DR 14s an extra step is needed to activate the DR Detector during calibra...

Page 22: ...rkstations and each calibration completely discards the calibration data of any previous calibration Nevertheless each NX workstation will independently request recalibration of the DR Detector every 12 months Modality Settings Note To calibrate DR 10e C DR 14e C or DR 17e C you have to log in to a user account with administrator rights The indicative exposure levels for each exposure are specifie...

Page 23: ...To overrule the limitation the collimator must be unlocked using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the exposure parameters to the indicative value for the exposure level 2 Make exposures as instructed by the DR Calibration Tool Do not initiate a next exposure before the DR Calibration Tool displays the instruction To avoid overheating of the X ray...

Page 24: ...ttings used for a previous calibration are known use these settings Exposure Sequence Procedure 1 Allow the DR Detector to warm up for 30 minutes before performing the calibration 2 Remove the compression paddle 3 Position the calibration PMMA block on the bucky 4 Set the mAs value to the indicative value for the exposure level 5 Make exposures as instructed by the DR Calibration Tool The rate of ...

Page 25: ...d position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube Grid Remove the grid If the grid is fixed use 32 mAs as indicative mAs value Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is no additional filtration Collimation Collimatio...

Page 26: ...cked by the user Ralco collimators may limit the X ray field To overrule the limitation the collimator must be unlocked using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the exposure level 2 Make exposures as instructed by the DR Calibration Tool 26 DR Detector Calibration Calibrating the DR Detector 0134I EN 202109...

Page 27: ...ive value for third exposure level 4 mAs Focus large focus SID Use the average SID for normal operation Position If the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube Grid Remove the grid Filtration No filtration DR D...

Page 28: ...ion must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the first exposure level 2 Make three exposures The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the required exposure level 3 Adjust the mAs value for the second exposure level The second exposure level is approximately at 2 3 of the first exposure level 4 ...

Page 29: ...se the average SID for normal operation Position If the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube Grid Remove the grid Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is no additional filt...

Page 30: ...ay field To overrule the limitation the collimator must be unlocked using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the uniformity check 2 Make the exposure The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the required exposure level 3 Set the mAs value to the indicative value ...

Page 31: ...us SID Use the average SID for normal operation Position If the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube Grid Remove the grid Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is no additio...

Page 32: ...d using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the first exposure level 2 Make two exposures The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the required exposure level 3 Make 10 exposures 4 Set the mAs value to the indicative value for the second exposure level 5 Make two ...

Page 33: ...rge focus SID Use the average SID for normal operation Position If the DR Detector is used in a fixed position use the same position for calibration If the DR Detector is used in different positions perform the calibration with the short side of the DR Detector parallel to the axis of the X ray tube S Grid Remove the grid Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is n...

Page 34: ...d using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the first exposure level 2 Make two exposures The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the required exposure level 3 Make 10 exposures 4 Set the mAs value to the indicative value for the second exposure level 5 Make two ...

Page 35: ...ity settings may be specified by the DR Calibration Tool If the DR Calibration Tool does not specify modality settings refer to following table Table 12 Modality settings DR Table DR Wall Stand DX D 300 U arm kV 75 kV 75 kV 75 kV mAs in dicative value for first ex posure level 28 mAs 32 mAs 32 mAs Focus large focus large focus large focus SID Use the average SID for normal operation Position arm a...

Page 36: ...n settings are applied automatically and must be checked by the user Ralco collimators may limit the X ray field To overrule the limitation the collimator must be unlocked using a key and the collimation must be applied manually Exposure Sequence Procedure 1 Set the mAs value to the indicative value for the exposure level 2 Make exposures as instructed by the DR Calibration Tool 36 DR Detector Cal...

Page 37: ...ter is mounted Filtration Mount the Agfa calibration filter Cu 1 5 mm Check that there is no additional filtration Collimation Maximum collimation area Note If the exposure settings used for a previous calibration are known use these settings On modalities that support automatic collimation the collimation settings are applied automatically and must be checked by the user The collimator may limit ...

Page 38: ...el After adjusting the dose setting it may be necessary to repeat previous exposures as well During calibration for static image mode the DR Calibration Tool may request to perform a rapid sequence exposure Do not initiate a next exposure before the DR Calibration Tool displays the instruction Initiating the exposure while the DR detector is not ready invalidates the calibration Do not wait longer...

Page 39: ...Problem solving Topics DR Calibration Tool Stalls Generator error Generator controls are disabled DR Detector Calibration Problem solving 39 0134I EN 20210924 1204 ...

Page 40: ...workstation and restart the calibration procedure Problem The DR Calibration Tool stalls for a short time Cause Information must be retrieved from the DR Detector Workaround Wait until the communication to the DR De tector has finished and the DR Calibration Tool reacts again This may take a number of seconds 40 DR Detector Calibration Problem solving 0134I EN 20210924 1204 ...

Page 41: ...emaining heat capacity of the X ray tube is insufficient for the next exposure Work around 1 Abort the calibration procedure 2 Reset the generator 3 Restart the calibration when the X ray tube is cooled down 4 The initial uniformity check has to be repeated but the modes for which calibration was already performed can be skipped DR Detector Calibration Problem solving 41 0134I EN 20210924 1204 ...

Page 42: ...re con sole are suddenly disabled Cause A communication problem with the generator has occurred Work around 1 Abort the calibration procedure 2 Restart the calibration 3 The initial uniformity check has to be repeated but the modes for which calibration was already performed can be skipped 42 DR Detector Calibration Problem solving 0134I EN 20210924 1204 ...

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