Radiotherapy/Experimental Runs/2022-09-07: Difference between revisions
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https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_1.png | https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_1.png | ||
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=== Photos of setup === | |||
<div class="image300px" style="text-align: center;"> | |||
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/_DSC4715.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/_DSC4715.JPG] | |||
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/_DSC4713.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/_DSC4713.JPG] | |||
</div> | |||
(Inside pelicase, outside pelicase, collimators, through pelicase window) | |||
=== Pre-data Taking Information and Notes === | === Pre-data Taking Information and Notes === | ||
Revision as of 17:45, 16 November 2022
Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.
Setup
Schematic
Photos of setup
(Inside pelicase, outside pelicase, collimators, through pelicase window)
Pre-data Taking Information and Notes
- Used 200mmx200mmx2mm green or blue scintillator sheet polystyrene base sandwiched by two 200mmx200mmx50mm polystyrene clear plastic blocks
- 53cm from "phi" symbol on camera to sheet
- Checked camera in focus with ruler in front/back and middle of two blocks.
- Pelicase on couch
- Scintillator blocks aligned to laser cross hairs
- 785 mm source to surface distance suitable for output factor/PDD/profile measurements.
- Room lights out and pelicase window closed by 1mm pelicase material.
- Check optical axis aligned with top surface using crosshair in the image analysis.
Camera settings
- Focal length 20mm
- lens focus distance – 0.5 (500mm)
- 53cm focal plane (phi on camera ) to sheet
- f-number 5.6
Data taking
Plan
- Take photos of blue sheet with blocks starting from 60mm collimator size to 5mm.
- Remove blue sheet – repeat measurements
- Use new set of blocks and blue sheet - repeat measurements
| Blue scintillator sheet | ||||||
|---|---|---|---|---|---|---|
| Collimator Size (mm) | Exposure (s) | ISO | f-number | File no. | Comments | Image |
| 60 | 10 | 400 | 5.6 | 69-73 | 
| |
| 50 | 10 | 400 | 5.6 | 74-78 | 
| |
| 40 | 13 | 400 | 5.6 | 79-83 | 
| |
| 35 | 15 | 400 | 5.6 | 84-88 | 
| |
| 30 | 15 | 400 | 5.6 | 89-93 | 
| |
| 25 | 20 | 400 | 5.6 | 94-98 | 
| |
| 20 | 25 | 400 | 5.6 | 99,101-104 | 
| |
| 15 | 30 | 400 | 5.6 | 106-110 | 
| |
| 12.5 | 30 | 400 | 5.6 | 111-115 | 
| |
| 10 | 30 | 400 | 5.6 | 116-120 | 
| |
| 7.5 | 30 | 400 | 5.6 | 121-130 | 
| |
| 5 | 30 | 400 | 5.6 | 131-140 | 
| |
| 60 | 4 | 400 | 5.6 | 161-165 | 
| |
| 60 | 5 | 400 | 5.6 | 166-170 | 
| |
| 60 | 6 | 400 | 5.6 | 171-175 | 
| |
| 5 | 30 | 800 | 5.6 | 141-145 | 
| |
| 5 | 30 | 1600 | 5.6 | 146-150 | 
| |
| 5 | 30 | 400 | 2.8 | 151-155 | 
| |
| 5 | 15 | 1600 | 5.6 | 156-160 | 
| |
| No scintillator sheet | ||||||
|---|---|---|---|---|---|---|
| Collimator Size (mm) | Exposure (s) | ISO | f-number | File no. | Comments | Image |
| 60 | 10 | 400 | 5.6 | 69-73 | 
| |
| 50 | 10 | 400 | 5.6 | 74-78 | 
| |
| 40 | 13 | 400 | 5.6 | 79-83 | 
| |
| 35 | 15 | 400 | 5.6 | 84-88 | 
| |
| 30 | 15 | 400 | 5.6 | 89-93 | 
| |
| 25 | 20 | 400 | 5.6 | 94-98 | 
| |
| 20 | 25 | 400 | 5.6 | 99,101-104 | 
| |
| 15 | 30 | 400 | 5.6 | 106-110 | 
| |
| 12.5 | 30 | 400 | 5.6 | 111-115 | 
| |
| 10 | 30 | 400 | 5.6 | 116-120 | 
| |
| 7.5 | 30 | 400 | 5.6 | 121-130 | 
| |
| 5 | 30 | 400 | 5.6 | 131-140 | 
| |
| 60 | 4 | 400 | 5.6 | 195-199 | 
| |
| 60 | 6 | 400 | 5.6 | 200-204 | 
| |
| Green scintillator sheet | ||||||
|---|---|---|---|---|---|---|
| Collimator Size (mm) | Exposure (s) | ISO | f-number | File no. | Comments | Image |
| 60 | 2 | 400 | 5.6 | 281-285 | 
| |
| 60 | 3 | 400 | 5.6 | 286-290 | 
| |
| 60 | 4 | 400 | 5.6 | 291-295 | 
| |
| 60 | 6 | 400 | 5.6 | 296-300 | 
| |
| 60 | 10 | 400 | 5.6 | 301-305 | 
| |
| 50 | 10 | 400 | 5.6 | 306-310 | 
| |
| 50 | 2 | 400 | 5.6 | 311-315 | 
| |
| 40 | 13 | 400 | 5.6 | 316-320 | 
| |
| 40 | 2 | 400 | 5.6 | 321-325 | 
| |
| 35 | 4 | 400 | 5.6 | 326-330 | 
| |
| 35 | 15 | 400 | 5.6 | 331-335 | 
| |
| 30 | 15 | 400 | 5.6 | 336-340 | 
| |
| 30 | 4 | 400 | 5.6 | 341-345 | 
| |
| 25 | 20 | 400 | 5.6 | 346-350 | 
| |
| 25 | 5 | 400 | 5.6 | 351-355 | 
| |
| 20 | 25 | 400 | 5.6 | 356-360 | 
| |
| 20 | 6 | 400 | 5.6 | 361-365 | 
| |
| 15 | 30 | 400 | 5.6 | 366-370 | 
| |
| 12.5 | 30 | 400 | 5.6 | 377-381 | 
| |
| 10 | 30 | 400 | 5.6 | 382-386 | 
| |
| 7.5 | 30 | 400 | 5.6 | 387-391 | 
| |
| 5 | 30 | 400 | 5.6 | 392-396 | 
| |
| Background | ||||||
|---|---|---|---|---|---|---|
| Collimator Size (mm) | Exposure (s) | ISO | f-number | File no. | Comments | Image |
| None | 4 | 400 | 5.6 | 176 | 
| |
| None | 5 | 400 | 5.6 | 177 | 
| |
| None | 6 | 400 | 5.6 | 178 | 
| |
| None | 8 | 400 | 5.6 | 179 | 
| |
| None | 10 | 400 | 5.6 | 180 | 
| |
| None | 13 | 400 | 5.6 | 181 | 
| |
| None | 15 | 400 | 5.6 | 182 | 
| |
| None | 20 | 400 | 5.6 | 183 | 
| |
| None | 25 | 400 | 5.6 | 184 | 
| |
| None | 30 | 400 | 5.6 | 185 | 
| |