Radiotherapy/Experimental Runs/2022-09-07: Difference between revisions

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== Setup ==
== Setup ==
=== Schematic ===
<div class="image600px" style="text-align: center;">
https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_1.png
</div>
=== 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_Nov2022/setup_photo.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_photo.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_photo3.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/setup_photo3.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/crosshair.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/crosshair.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/laser.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/laser.jpg]
[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/green_disco.jpg https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/green_disco.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>
=== 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 plastic.
* Check optical axis aligned with top surface using crosshair in the image analysis.
* Used shims to level top surface of plastic blocks and scintillator sheet
=== 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 ==
== Data taking ==
=== Plan ===
* Position camera by placing aligning crosshair on image with top surface of block
* Take photos of blue sheet with blocks starting from 60mm collimator size to 5mm.
* Remove blue sheet – repeat measurements
* Position camera by placing aligning crosshair on image with top surface of block
* Use new set of blocks and blue sheet - repeat measurements
<!-- ------------------------------------table1------------------------------------------ -->
{|class="wikitable" style="display: inline-table;"
!colspan="7" | Blue scintillator sheet
|-
!Collimator Size (mm)
!Exposure (s)
!ISO
!f-number
!File no.
!Comments
!Image
|-
| 60 || 10 || 400 || 5.6 || 69-73 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_0.JPG]
</div>
|-
| 50 || 10 || 400 || 5.6 || 74-78 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_50mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_50mm_0.JPG]
</div>
|-
| 40 || 13 || 400 || 5.6 || 79-83 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_40mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_40mm_0.JPG]
</div>
|-
| 35 || 15 || 400 || 5.6 || 84-88 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_35mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_35mm_0.JPG]
</div>
|-
| 30 || 15 || 400 || 5.6 || 89-93 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_30mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_30mm_0.JPG]
</div>
|-
| 25 || 20 || 400 || 5.6 || 94-98 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_25mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_25mm_0.JPG]
</div>
|-
| 20 || 25 || 400 || 5.6 || 99,101-104 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_20mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_20mm_0.JPG]
</div>
|-
| 15 || 30 || 400 || 5.6 || 106-110 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_15mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_15mm_0.JPG]
</div>
|-
| 12.5 || 30 || 400 || 5.6 || 111-115 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_12-5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_12-5mm_0.JPG]
</div>
|-
| 10 || 30 || 400 || 5.6 || 116-120 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_10mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_10mm_0.JPG]
</div>
|-
| 7.5 || 30 || 400 || 5.6 || 121-130 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_7-5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_7-5mm_0.JPG]
</div>
|-
| 5 || 30 || 400 || 5.6 || 131-140 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_0.JPG]
</div>
|-
| 60 || 4 || 400 || 5.6 || 161-165 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_4s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_4s.JPG]
</div>
|-
| 60 || 5 || 400 || 5.6 || 166-170 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_5s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_5s.JPG]
</div>
|-
| 60 || 6 || 400 || 5.6 || 171-175 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_6s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_60mm_6s.JPG]
</div>
|-
| 5 || 30 || 800 || 5.6 || 141-145 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso800_f5-6.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso800_f5-6.JPG]
</div>
|-
| 5 || 30 || 1600 || 5.6 || 146-150 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso1600_f5-6.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso1600_f5-6.JPG]
</div>
|-
| 5 || 30 || 400 || 2.8 || 151-155 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso400_f2-8.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_30s_iso400_f2-8.JPG]
</div>
|-
| 5 || 15 || 1600 || 5.6 || 156-160 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_15s_iso1600_f5-6.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/blue_sheet/coll_size_5mm_15s_iso1600_f5-6.JPG]
</div>
|-
<!-- ------------------------------------table2------------------------------------------ -->
{|class="wikitable" style="display: inline-table;"
!colspan="7" | No scintillator sheet
|-
!Collimator Size (mm)
!Exposure (s)
!ISO
!f-number
!File no.
!Comments
!Image
|-
| 60 || 10 || 400 || 5.6 || 69-73 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_0.JPG]
</div>
|-
| 50 || 10 || 400 || 5.6 || 74-78 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_50mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_50mm_0.JPG]
</div>
|-
| 40 || 13 || 400 || 5.6 || 79-83 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_40mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_40mm_0.JPG]
</div>
|-
| 35 || 15 || 400 || 5.6 || 84-88 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_35mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_35mm_0.JPG]
</div>
|-
| 30 || 15 || 400 || 5.6 || 89-93 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_30mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_30mm_0.JPG]
</div>
|-
| 25 || 20 || 400 || 5.6 || 94-98 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_25mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_25mm_0.JPG]
</div>
|-
| 20 || 25 || 400 || 5.6 || 99,101-104 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_20mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_20mm_0.JPG]
</div>
|-
| 15 || 30 || 400 || 5.6 || 106-110 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_15mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_15mm_0.JPG]
</div>
|-
| 12.5 || 30 || 400 || 5.6 || 111-115 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_12-5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_12-5mm_0.JPG]
</div>
|-
| 10 || 30 || 400 || 5.6 || 116-120 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_10mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_10mm_0.JPG]
</div>
|-
| 7.5 || 30 || 400 || 5.6 || 121-130 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_7-5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_7-5mm_0.JPG]
</div>
|-
| 5 || 30 || 400 || 5.6 || 131-140 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_5mm_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_5mm_0.JPG]
</div>
|-
| 60 || 4 || 400 || 5.6 || 195-199 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_4s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_4s.JPG]
</div>
|-
| 60 || 6 || 400 || 5.6 || 200-204 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_6s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/no_sheet/coll_size_60mm_6s.JPG]
</div>
|-
<!-- ------------------------------------table3------------------------------------------ -->
{|class="wikitable" style="display: inline-table;"
!colspan="7" | Green scintillator sheet
|-
!Collimator Size (mm)
!Exposure (s)
!ISO
!f-number
!File no.
!Comments
!Image
|-
| 60 || 2 || 400 || 5.6 || 281-285 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_2s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_2s_0.JPG]
</div>
|-
| 60 || 3 || 400 || 5.6 || 286-290 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_3s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_3s_0.JPG]
</div>
|-
| 60 || 4 || 400 || 5.6 || 291-295 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_4s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_4s_0.JPG]
</div>
|-
| 60 || 6 || 400 || 5.6 || 296-300 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_6s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_6s_0.JPG]
</div>
|-
| 60 || 10 || 400 || 5.6 || 301-305 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_10s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_60mm_10s_0.JPG]
</div>
|-
| 50 || 10 || 400 || 5.6 || 306-310 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_50mm_10s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_50mm_10s_0.JPG]
</div>
|-
| 50 || 2 || 400 || 5.6 || 311-315 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_50mm_2s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_50mm_2s_0.JPG]
</div>
|-
| 40 || 13 || 400 || 5.6 || 316-320 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_40mm_13s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_40mm_13s_0.JPG]
</div>
|-
| 40 || 2 || 400 || 5.6 || 321-325 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_40mm_3s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_40mm_3s_0.JPG]
</div>
|-
| 35 || 4 || 400 || 5.6 || 326-330 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_35mm_4s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_35mm_4s_0.JPG]
</div>
|-
| 35 || 15 || 400 || 5.6 || 331-335 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_35mm_15s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_35mm_15s_0.JPG]
</div>
|-
| 30 || 15 || 400 || 5.6 || 336-340 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_30mm_15s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_30mm_15s_0.JPG]
</div>
|-
| 30 || 4 || 400 || 5.6 || 341-345 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_30mm_4s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_30mm_4s_0.JPG]
</div>
|-
| 25 || 20 || 400 || 5.6 || 346-350 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_25mm_20s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_25mm_20s_0.JPG]
</div>
|-
| 25 || 5 || 400 || 5.6 || 351-355 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_25mm_5s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_25mm_5s_0.JPG]
</div>
|-
| 20 || 25 || 400 || 5.6 || 356-360 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_20mm_25s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_20mm_25s_0.JPG]
</div>
|-
| 20 || 6 || 400 || 5.6 || 361-365 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_20mm_6s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_20mm_6s_0.JPG]
</div>
|-
| 15 || 30 || 400 || 5.6 || 366-370 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_15mm_30s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_15mm_30s_0.JPG]
</div>
|-
| 12.5 || 30 || 400 || 5.6 || 377-381 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_12-5mm_30s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_12-5mm_30s_0.JPG]
</div>
|-
| 10 || 30 || 400 || 5.6 || 382-386 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_10mm_30s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_10mm_30s_0.JPG]
</div>
|-
| 7.5 || 30 || 400 || 5.6 || 387-391 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_7-5mm_30s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_7-5mm_30s_0.JPG]
</div>
|-
| 5 || 30 || 400 || 5.6 || 392-396 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_5mm_30s_0.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/green_sheet/coll_size_5mm_30s_0.JPG]
</div>
|-
<!-- ------------------------------------table3------------------------------------------ -->
{|class="wikitable" style="display: inline-table;"
!colspan="7" | Background
|-
!Collimator Size (mm)
!Exposure (s)
!ISO
!f-number
!File no.
!Comments
!Image
|-
| None || 4 || 400 || 5.6 || 176 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_4s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_4s.JPG]
</div>
|-
| None || 5 || 400 || 5.6 || 177 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_5s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_5s.JPG]
</div>
|-
| None || 6 || 400 || 5.6 || 178 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_6s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_6s.JPG]
</div>
|-
| None || 8 || 400 || 5.6 || 179 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_8s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_8s.JPG]
</div>
|-
| None || 10 || 400 || 5.6 || 180 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_10s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_10s.JPG]
</div>
|-
| None || 13 || 400 || 5.6 || 181 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_13s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_13s.JPG]
</div>
|-
| None || 15 || 400 || 5.6 || 182 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_15s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_15s.JPG]
</div>
|-
| None || 20 || 400 || 5.6 || 183 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_20s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_20s.JPG]
</div>
|-
| None || 25 || 400 || 5.6 || 184 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_25s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_25s.JPG]
</div>
|-
| None || 30 || 400 || 5.6 || 185 ||  || <div class="image150px" style="text-align: center;">[https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_30s.JPG https://www.hep.ucl.ac.uk/pbt/wikiData/images/Cyberknife_Birmingham_Nov2022/compressed/background/exposure_30s.JPG]
</div>
|-

Latest revision as of 10:46, 17 November 2022

Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.

Setup

Schematic

setup_1.png

Photos of setup

_DSC4715.JPG setup_photo.jpg setup_photo3.jpg crosshair.jpg laser.jpg green_disco.jpg _DSC4713.JPG

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 plastic.
  • Check optical axis aligned with top surface using crosshair in the image analysis.
  • Used shims to level top surface of plastic blocks and scintillator sheet

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

  • Position camera by placing aligning crosshair on image with top surface of block
  • Take photos of blue sheet with blocks starting from 60mm collimator size to 5mm.
  • Remove blue sheet – repeat measurements
  • Position camera by placing aligning crosshair on image with top surface of block
  • 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
coll_size_60mm_0.JPG
50 10 400 5.6 74-78
coll_size_50mm_0.JPG
40 13 400 5.6 79-83
coll_size_40mm_0.JPG
35 15 400 5.6 84-88
coll_size_35mm_0.JPG
30 15 400 5.6 89-93
coll_size_30mm_0.JPG
25 20 400 5.6 94-98
coll_size_25mm_0.JPG
20 25 400 5.6 99,101-104
coll_size_20mm_0.JPG
15 30 400 5.6 106-110
coll_size_15mm_0.JPG
12.5 30 400 5.6 111-115
coll_size_12-5mm_0.JPG
10 30 400 5.6 116-120
coll_size_10mm_0.JPG
7.5 30 400 5.6 121-130
coll_size_7-5mm_0.JPG
5 30 400 5.6 131-140
coll_size_5mm_0.JPG
60 4 400 5.6 161-165
coll_size_60mm_4s.JPG
60 5 400 5.6 166-170
coll_size_60mm_5s.JPG
60 6 400 5.6 171-175
coll_size_60mm_6s.JPG
5 30 800 5.6 141-145
coll_size_5mm_30s_iso800_f5-6.JPG
5 30 1600 5.6 146-150
coll_size_5mm_30s_iso1600_f5-6.JPG
5 30 400 2.8 151-155
coll_size_5mm_30s_iso400_f2-8.JPG
5 15 1600 5.6 156-160
coll_size_5mm_15s_iso1600_f5-6.JPG
No scintillator sheet
Collimator Size (mm) Exposure (s) ISO f-number File no. Comments Image
60 10 400 5.6 69-73
coll_size_60mm_0.JPG
50 10 400 5.6 74-78
coll_size_50mm_0.JPG
40 13 400 5.6 79-83
coll_size_40mm_0.JPG
35 15 400 5.6 84-88
coll_size_35mm_0.JPG
30 15 400 5.6 89-93
coll_size_30mm_0.JPG
25 20 400 5.6 94-98
coll_size_25mm_0.JPG
20 25 400 5.6 99,101-104
coll_size_20mm_0.JPG
15 30 400 5.6 106-110
coll_size_15mm_0.JPG
12.5 30 400 5.6 111-115
coll_size_12-5mm_0.JPG
10 30 400 5.6 116-120
coll_size_10mm_0.JPG
7.5 30 400 5.6 121-130
coll_size_7-5mm_0.JPG
5 30 400 5.6 131-140
coll_size_5mm_0.JPG
60 4 400 5.6 195-199
coll_size_60mm_4s.JPG
60 6 400 5.6 200-204
coll_size_60mm_6s.JPG
Green scintillator sheet
Collimator Size (mm) Exposure (s) ISO f-number File no. Comments Image
60 2 400 5.6 281-285
coll_size_60mm_2s_0.JPG
60 3 400 5.6 286-290
coll_size_60mm_3s_0.JPG
60 4 400 5.6 291-295
coll_size_60mm_4s_0.JPG
60 6 400 5.6 296-300
coll_size_60mm_6s_0.JPG
60 10 400 5.6 301-305
coll_size_60mm_10s_0.JPG
50 10 400 5.6 306-310
coll_size_50mm_10s_0.JPG
50 2 400 5.6 311-315
coll_size_50mm_2s_0.JPG
40 13 400 5.6 316-320
coll_size_40mm_13s_0.JPG
40 2 400 5.6 321-325
coll_size_40mm_3s_0.JPG
35 4 400 5.6 326-330
coll_size_35mm_4s_0.JPG
35 15 400 5.6 331-335
coll_size_35mm_15s_0.JPG
30 15 400 5.6 336-340
coll_size_30mm_15s_0.JPG
30 4 400 5.6 341-345
coll_size_30mm_4s_0.JPG
25 20 400 5.6 346-350
coll_size_25mm_20s_0.JPG
25 5 400 5.6 351-355
coll_size_25mm_5s_0.JPG
20 25 400 5.6 356-360
coll_size_20mm_25s_0.JPG
20 6 400 5.6 361-365
coll_size_20mm_6s_0.JPG
15 30 400 5.6 366-370
coll_size_15mm_30s_0.JPG
12.5 30 400 5.6 377-381
coll_size_12-5mm_30s_0.JPG
10 30 400 5.6 382-386
coll_size_10mm_30s_0.JPG
7.5 30 400 5.6 387-391
coll_size_7-5mm_30s_0.JPG
5 30 400 5.6 392-396
coll_size_5mm_30s_0.JPG
Background
Collimator Size (mm) Exposure (s) ISO f-number File no. Comments Image
None 4 400 5.6 176
exposure_4s.JPG
None 5 400 5.6 177
exposure_5s.JPG
None 6 400 5.6 178
exposure_6s.JPG
None 8 400 5.6 179
exposure_8s.JPG
None 10 400 5.6 180
exposure_10s.JPG
None 13 400 5.6 181
exposure_13s.JPG
None 15 400 5.6 182
exposure_15s.JPG
None 20 400 5.6 183
exposure_20s.JPG
None 25 400 5.6 184
exposure_25s.JPG
None 30 400 5.6 185
exposure_30s.JPG
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