Brivo OEC 715/785/865 Mobile C-Arm X-Ray Product Service Manual
3-46
3.6.4.
Image Resolution
Place spatial resolution tool in the front of the image intensifier. The angle between the horizontal axis of
the image and the resolution tool must be 45
°
. Select appropriate kV value. Take an exposure and stop
once image is stable. The image is frozen on the left monitor. Verify the resolution in Lp/mm is equal to,
or greater than, the values listed below. Repeat and select any of three field sizes (NORM, MAG1 and
MAG2) to verify the resolution.
Field Size
Model
MAG NORM
MAG1
MAG2
Resolution (Lp/mm)
Brivo OEC 715/785
≥
2.0
≥
2.6
≥
3.1
Brivo OEC 865
≥ 2.2
≥
3.0
≥
3.5
If the resolution check fails, refer to section 4.6.8 for Camera Focus calibration.
3.6.5.
Dose Limitation Check
Normal Fluoro Dose rate check
1.
Operate C-Arm to make the generator being top and the image intensifier being bottom.
2.
Position the detector of dosimeter at the center of the X-ray beam 30cm above the grid of image
intensifier. Cover the image intensifier with lead plate thicker than 3mm.
3.
Set KVp as 110kVp, increase mA to maximum in manual mode. Measure the dose rate while
making exposure. Limits vary by the dose group, which was configured in software configuration
section by country.
4.
Refer to below table verify the corresponding Dose group according to country’s Dose group
requirement (refer to 5.2.4).
Continuous Fluoro:
≤
47.5 mGy/min (Dose group: Normal 50 and HLF 50)
≤
47.5 mGy/min (Dose group: Normal 50 and HLF 100)
≤
83.6 mGy/min (Dose group: Normal 88 and HLF 100)
HLF Dose rate check:
1.
Position the dosimeter in the center of the X-ray beam 30cm above the grid. Cover the image
intensifier with lead thicker than 3mm for protection of the image intensifier.
2.
Set kVp as 110kVp, increase mA to maximum in manual mode. Measure the dose rate while
making exposure. Limits vary by the dose group, which was selected in software configuration
section by country.
3.
Refer to below table verify the corresponding Dose group according to country’s Dose group
requirement (refer to 5.2.4).
Continuous Fluoro:
≤
47.5 mGy/min (Dose group: Normal 50 and HLF 50)
≤
95 mGy/min (Dose group: Normal 50 and HLF 100)
≤
95 mGy/min (Dose group: Normal 88 and HLF 100)
Содержание Brivo OEC 715
Страница 2: ......
Страница 19: ...Chapter1 Introduction and Safety...
Страница 41: ...Introduction and Safety 23 46 54 20 18 26...
Страница 55: ...Chapter2 System Overview...
Страница 137: ...Chapter3 Installation...
Страница 147: ...Installation 3 11 7 Put the ramp in position Release all bracket and move the workstation along the ramp off the pallet...
Страница 211: ...Installation 3 75 3 9 Reporting For U S Systems Complete and submit Form 2579 within 15 days of installation...
Страница 212: ...Chapter4 Calibration...
Страница 223: ...Brivo OEC 715 785 865 Mobile C Arm X Ray Product Service Manual 4 12 Mainframe Control Board TP7...
Страница 231: ...Brivo OEC 715 785 865 Mobile C Arm X Ray Product Service Manual 4 20 Mainframe Control Board TP17 POT4 J5 TP7 POT7 POT5...
Страница 275: ...Brivo OEC 715 785 865 Mobile C Arm X Ray Product Service Manual 4 64...
Страница 284: ...Chapter5 Software...
Страница 312: ...Software 5 29 4 Click Next 5 Click Install 6 Click Finish button to complete installation procedure...
Страница 326: ...Software 5 43 2 Click on install to continue 3 Click Next to continue...
Страница 335: ...Chapter6 Troubleshooting...
Страница 408: ...Chapter7 Replacement...
Страница 418: ...Replacement 7 11 166...
Страница 488: ...Chapter8 Periodic Maintenance...
Страница 502: ...Periodic Maintenance 8 15...
Страница 505: ...Chapter9 Technical Reference...
Страница 520: ...Brivo OEC 715 785 865 Mobile C Arm X Ray Product Service Manual 9 16 Lateral configuration 1 5m Lateral configuration 1m...
Страница 521: ...Technical Reference 9 17 Vertical configuration 1 5m Vertical configuration 1m...
Страница 526: ...11 Appendix System Schematics...