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

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** 200mmx200mmx2mm blue scintillator sheet polystyrene base  
** 200mmx200mmx2mm blue scintillator sheet polystyrene base  
** sandwiched by two 200mmx200mmx50mm polystyrene clear plastic blocks  
** sandwiched by two 200mmx200mmx50mm polystyrene clear plastic blocks  
* 565mm from lens to centre
* 565mm from lens to sheet
* Check camera in focus with ruler on the sheet
* Check camera in focus with ruler on the sheet
* Ruler in focus at sheet
* Ruler in focus at sheet
Line 40: Line 40:


{|class="wikitable" style="display: inline-table;"
{|class="wikitable" style="display: inline-table;"
!colspan="4" | With scintillator sheet
|-
!Collimator Size (mm)
!Collimator Size (mm)
!Monitor Units
!Monitor Units
!Image
!With sheet
!Comments
!No sheet
|-
|-
| 5 || 400 || <div class="image150px" style="text-align: center;">
| 5 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 400 || <div class="image150px" style="text-align: center;">
| 7.5 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 400 || <div class="image150px" style="text-align: center;">
| 10 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 400 || <div class="image150px" style="text-align: center;">
| 12.5 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 400 || <div class="image150px" style="text-align: center;">
| 15 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 400 || <div class="image150px" style="text-align: center;">
| 20 || 400 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 300 || <div class="image150px" style="text-align: center;">
| 25 || 300 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 300 || <div class="image150px" style="text-align: center;">
| 30 || 300 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 250 || <div class="image150px" style="text-align: center;">
| 35 || 250 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 250 || <div class="image150px" style="text-align: center;">
| 40 || 250 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 150 || <div class="image150px" style="text-align: center;">
| 50 || 150 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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 || 150 || <div class="image150px" style="text-align: center;">
| 60 || 150 || <div class="image150px" style="text-align: center;">
[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]
[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 class="image150px" style="text-align: center;">
[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>
||
|-


|-
|}


<!-- ------------------------------------table4------------------------------------------ -->
== Before and after irradiation ==


{|class="wikitable" style="display: inline-table;"
<div class="image300px" style="text-align: center;">
!colspan="4" | No scintillator sheet
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/5mm_010.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/5mm_010.JPG]
|-
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_092.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Feb2020/calibration_092.JPG]
!Collimator Size (mm)
!Monitor Units
!Image
!Comments
|-
| 5 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 7.5 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 10 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 12.5 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 15 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 20 || 400 || <div class="image150px" style="text-align: center;">
[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>
|-
| 25 || 300 || <div class="image150px" style="text-align: center;">
[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>
|-
| 30 || 300 || <div class="image150px" style="text-align: center;">
[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>
|-
| 35 || 250 || <div class="image150px" style="text-align: center;">
[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>
|-
| 40 || 250 || <div class="image150px" style="text-align: center;">
[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>
|-
| 50 || 150 || <div class="image150px" style="text-align: center;">
[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>
|-
| 60 || 150 || <div class="image150px" style="text-align: center;">
[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>
|-
Green discolouration observed after irradiation. Only present when the lights are on
 
<!--
Section commented out
-->

Latest revision as of 09:51, 15 September 2022

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

Setup

Schematic

setup.png

Pre-data Taking Information and Notes

  • Phantom
    • 200mmx200mmx2mm blue scintillator sheet polystyrene base
    • sandwiched by two 200mmx200mmx50mm polystyrene clear plastic blocks
  • 565mm from lens to sheet
  • Check camera in focus with ruler on the sheet
  • Ruler in focus at sheet
  • Scintillator blocks aligned to laser cross hairs
  • 785 mm source to surface distance suitable for output factor/PDD/profile measurements.
  • Wooden box is covered with black cloth
  • Camera height adjusted with wooden plates
  • Top surfaces of plastic blocks and sheet aligned with paper underneath

Data Taking

  • All images taken with
    • Canon EOS 1100D
    • 18-55mm lens
    • f/5
    • 200ISO
    • 30s exposure
  • Beam turned on for a given amount of time within the 30s exposure
  • This is noted in monitor units, with the beam having constant 1000MU/minute
  • Used EOS utility app for controlling camera
  • Image of ruler taken at sheet for pixels to mm conversion
  • 3 images taken at each collimator size with 1 background image each.


Collimator Size (mm) Monitor Units With sheet No sheet
5 400

calibration_098.JPG

calibration_166.JPG

7.5 400

calibration_101.JPG

calibration_163.JPG

10 400

calibration_104.JPG

calibration_160.JPG

12.5 400

calibration_107.JPG

calibration_157.JPG

15 400

calibration_110.JPG

calibration_153.JPG

20 400

calibration_113.JPG

calibration_150.JPG

25 300

calibration_116.JPG

calibration_147.JPG

30 300

calibration_119.JPG

calibration_144.JPG

35 250

calibration_122.JPG

calibration_141.JPG

40 250

calibration_125.JPG

calibration_138.JPG

50 150

calibration_128.JPG

calibration_135.JPG

60 150

calibration_095.JPG

calibration_132.JPG

Before and after irradiation

5mm_010.JPG calibration_092.JPG

Green discolouration observed after irradiation. Only present when the lights are on

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