Radiotherapy/Experimental Runs/2022-07-26: Difference between revisions

Revision as of 16:01, 19 August 2022

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

All images taken with Nikon D7000, 20mm lens, f/2.8, 400ISO

First run

No scintillator sheet
Collimator Size (mm)	Exposure (s)	Image	Comments
60	3		Can see green discolouration caused by previous irradiations. Blocks must have been rotated by 90 when re-assembling

Second run
Replaced plastic blocks from first run with new un-irradiated plastic blocks

With scintillator sheet
Collimator Size (mm)	Exposure (s)	Image	Comments
5	30
7.5	20
10	15
12.5	10
15	8
20	8
25	6
30	6
35	5
40	4
50	3
60	3		Green discolouration probably from scintillator sheet. Rotated by 90 when re-assembling blocks and sheet

@@ Line 80: / Line 80: @@
 !Comments
 |-
-| 5 || 30 || <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_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
 |-
@@ Line 142: / Line 143: @@
 [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]
 </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
 <br>
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