Radiotherapy/Experimental Runs/2020-02-04: Difference between revisions

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* 5 images taken at each collimator size with 1 background image each.
* 5 images taken at each collimator size with 1 background image each.
* Change exposure time until near max saturation - get's best bit depth  
* Change exposure time until near max saturation - get's best bit depth  
* View data analysis [https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/data_analysis.pdf here]
<!-- ------------------------------------table1------------------------------------------ -->
<b> First run </b>
{|class="wikitable" style="display: inline-table;"
!colspan="4" | With scintillator sheet
|-
!Collimator Size (mm)
!Exposure (s)
!Image
!Comments
|-
| 5 || 30 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_5mm.jpg]
</div>
|-
| 7.5 || 20 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_7-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_7-5mm.jpg]
</div>
|-
| 10 || 15 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_10mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_10mm.jpg]
</div>
|-
| 12.5 || 10 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_12-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_12-5mm.jpg]
</div>
|-
| 15 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_15mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_15mm.jpg]
</div>
|-
| 20 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_20mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_20mm.jpg]
</div>
|-
| 25 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_25mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_25mm.jpg]
</div>
|-
| 30 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_30mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_30mm.jpg]
</div>
|-
| 35 || 5 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_35mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_35mm.jpg]
</div>
|-
| 40 || 4 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_40mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_40mm.jpg]
</div>
|-
| 50 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_50mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_50mm.jpg]
</div>
|-
| 60 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_60mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_1/size_60mm.jpg]
</div>
|-
<!-- ------------------------------------table2------------------------------------------ -->
{|class="wikitable" style="display: inline-table;"
!colspan="4" | No scintillator sheet
|-
!Collimator Size (mm)
!Exposure (s)
!Image
!Comments
|-
| 60 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_1/size_60mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_1/size_60mm.jpg]
</div>
|| Can see green discolouration caused by previous irradiations. <br> Blocks must have been rotated by 90 when re-assembling
|-


<!-- ------------------------------------table3------------------------------------------ -->
<!-- ------------------------------------table3------------------------------------------ -->
Line 125: Line 49:
|-
|-
| 5 || 30 || <div class="image150px" style="text-align: center;">
| 5 || 30 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_098.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_098.JPG]
</div>
</div>
|-
|-
| 7.5 || 20 || <div class="image150px" style="text-align: center;">
| 7.5 || 20 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_7-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_7-5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_101.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_101.JPG]
</div>
</div>
|-
|-
| 10 || 15 || <div class="image150px" style="text-align: center;">
| 10 || 15 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_10mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_10mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_104.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_104.JPG]
</div>
</div>
|-
|-
| 12.5 || 10 || <div class="image150px" style="text-align: center;">
| 12.5 || 10 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_12-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_12-5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_107.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_107.JPG]
</div>
</div>
|-
|-
| 15 || 8 || <div class="image150px" style="text-align: center;">
| 15 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_15mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_15mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_110.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_110.JPG]
</div>
</div>
|-
|-
| 20 || 8 || <div class="image150px" style="text-align: center;">
| 20 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_20mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_20mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_113.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_113.JPG]
</div>
</div>
|-
|-
| 25 || 6 || <div class="image150px" style="text-align: center;">
| 25 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_25mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_25mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_116.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_116.JPG]
</div>
</div>
|-
|-
| 30 || 6 || <div class="image150px" style="text-align: center;">
| 30 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_30mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_30mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_119.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_119.JPG]
</div>
</div>
|-
|-
| 35 || 5 || <div class="image150px" style="text-align: center;">
| 35 || 5 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_35mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_35mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_122.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_122.JPG]
</div>
</div>
|-
|-
| 40 || 4 || <div class="image150px" style="text-align: center;">
| 40 || 4 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_40mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_40mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_125.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_125.JPG]
</div>
</div>
|-
|-
| 50 || 3 || <div class="image150px" style="text-align: center;">
| 50 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_50mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_50mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_128.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_128.JPG]
</div>
</div>
|-
|-
| 60 || 3 || <div class="image150px" style="text-align: center;">
| 60 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_60mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/sheet_2/size_60mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_095.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_095.JPG]
</div>
</div>
||
||
Green discolouration probably from scintillator sheet. <br> Rotated by 90 when re-assembling blocks and sheet
 
|-
|-
<br>
 
<b> Second run </b>
<br>
Replaced plastic blocks from first run with new un-irradiated plastic blocks, but using same green scintillator sheet.
<br>
<!-- ------------------------------------table4------------------------------------------ -->
<!-- ------------------------------------table4------------------------------------------ -->


Line 190: Line 110:
|-
|-
| 5 || 30 || <div class="image150px" style="text-align: center;">
| 5 || 30 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_166.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_166.JPG]
</div>
</div>
|-
|-
| 7.5 || 20 || <div class="image150px" style="text-align: center;">
| 7.5 || 20 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_7-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_7-5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_163.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_163.JPG]
</div>
</div>
|-
|-
| 10 || 15 || <div class="image150px" style="text-align: center;">
| 10 || 15 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_10mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_10mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_160.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_160.JPG]
</div>
</div>
|-
|-
| 12.5 || 10 || <div class="image150px" style="text-align: center;">
| 12.5 || 10 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_12-5mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_12-5mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_157.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_157.JPG]
</div>
</div>
|-
|-
| 15 || 8 || <div class="image150px" style="text-align: center;">
| 15 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_15mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_15mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_153.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_153.JPG]
</div>
</div>
|-
|-
| 20 || 8 || <div class="image150px" style="text-align: center;">
| 20 || 8 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_20mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_20mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_150.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_150.JPG]
</div>
</div>
|-
|-
| 25 || 6 || <div class="image150px" style="text-align: center;">
| 25 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_25mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_25mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_147.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_147.JPG]
</div>
</div>
|-
|-
| 30 || 6 || <div class="image150px" style="text-align: center;">
| 30 || 6 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_30mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_30mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_144.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_144.JPG]
</div>
</div>
|-
|-
| 35 || 5 || <div class="image150px" style="text-align: center;">
| 35 || 5 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_35mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_35mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_141.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_141.JPG]
</div>
</div>
|-
|-
| 40 || 4 || <div class="image150px" style="text-align: center;">
| 40 || 4 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_40mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_40mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_138.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_138.JPG]
</div>
</div>
|-
|-
| 50 || 3 || <div class="image150px" style="text-align: center;">
| 50 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_50mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_50mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_135.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_135.JPG]
</div>
</div>
|-
|-
| 60 || 3 || <div class="image150px" style="text-align: center;">
| 60 || 3 || <div class="image150px" style="text-align: center;">
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_60mm.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Jul2022/nosheet_2/size_60mm.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_132.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_132.JPG]
</div>
</div>
|-
|-

Revision as of 14:40, 24 August 2022

Second experimental measurements with Cyberknife at Birmingham. Green scintillator thin sheet measurements only.

Setup

Schematic

setup.png

Photos of setup

_DSC4718.JPG _DSC4715.JPG _DSC4713.JPG _DSC4716.JPG

(Inside pelicase, outside pelicase, collimators, through pelicase window)

Pre-data Taking Information and Notes

  • Used 200mmx200mmx2mm green scintillator sheet polystyrene base sandwiched by two 200mmx200mmx50mm polystyrene clear plastic blocks
  • 53cm from lens to sheet
  • Check camera in focus with ruler on the sheet
  • Near/Far limit of focus 49.4cm 57.1cm calculated using https://dofmaster.com/dofjs.html
  • 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 open.
  • Check optical axis aligned with top surface using crosshair in the image analysis.
  • Arrived at hospital at 11am, finished data taking at 5pm

Data Taking

  • All images taken with Nikon D7000, 20mm lens, f/2.8, 400ISO
  • Used camera control pro 2 app
  • Image of ruler taken at sheet for pixels to mm conversion
  • 5 images taken at each collimator size with 1 background image each.
  • Change exposure time until near max saturation - get's best bit depth


With scintillator sheet
Collimator Size (mm) Exposure (s) Image Comments
5 30

calibration_098.JPG

7.5 20

calibration_101.JPG

10 15

calibration_104.JPG

12.5 10

calibration_107.JPG

15 8

calibration_110.JPG

20 8

calibration_113.JPG

25 6

calibration_116.JPG

30 6

calibration_119.JPG

35 5

calibration_122.JPG

40 4

calibration_125.JPG

50 3

calibration_128.JPG

60 3

calibration_095.JPG

No scintillator sheet
Collimator Size (mm) Exposure (s) Image Comments
5 30

calibration_166.JPG

7.5 20

calibration_163.JPG

10 15

calibration_160.JPG

12.5 10

calibration_157.JPG

15 8

calibration_153.JPG

20 8

calibration_150.JPG

25 6

calibration_147.JPG

30 6

calibration_144.JPG

35 5

calibration_141.JPG

40 4

calibration_138.JPG

50 3

calibration_135.JPG

60 3

calibration_132.JPG

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