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

From PBTWiki
Jump to navigation Jump to search
(Created page with "Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.")
 
 
(33 intermediate revisions by the same user not shown)
Line 1: Line 1:
Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.
Third experimental measurements with Cyberknife at Birmingham. Green and blue scintillator thin sheet measurements with measurements of green radiation damage.
== 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 ==
=== 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
Retrieved from "https://www.hep.ucl.ac.uk/pbt/pbtWiki/index.php?title=Radiotherapy/Experimental_Runs/2022-09-07&oldid=4990"