An algorithm for real-time dosimetry in intensity-modulated radiation therapy using the radioluminescence signal from Al2O3 : C
(2006) In Radiation Protection Dosimetry 120(1-4). p.41468-41468- Abstract
- Although the radioluminescence (RL) signal from optical fibre Al2O3:C dosemeters used in medical applications is essentially proportional to dose rate, the crystals used so far are imperfect in the sense that their RL sensitivity changes with accumulated dose. A computational algorithm has been developed that corrects for these sensitivity changes. We further report on a new system that effectively separates the RL signal generated in the crystal from fluorescence and Cerenkov emission generated in the optical fibre cable using a gating technique in connection with pulsed linear accelerator radiation beams. The dosimetry system has been used for dose measurements in a phantom during an intensity-modulated radiation therapy (IMRT) treatment... (More)
- Although the radioluminescence (RL) signal from optical fibre Al2O3:C dosemeters used in medical applications is essentially proportional to dose rate, the crystals used so far are imperfect in the sense that their RL sensitivity changes with accumulated dose. A computational algorithm has been developed that corrects for these sensitivity changes. We further report on a new system that effectively separates the RL signal generated in the crystal from fluorescence and Cerenkov emission generated in the optical fibre cable using a gating technique in connection with pulsed linear accelerator radiation beams. The dosimetry system has been used for dose measurements in a phantom during an intensity-modulated radiation therapy (IMRT) treatment with 6 MV photons. The RL measurement results are in excellent agreement (i.e. within 1%) with both the OSL results and the dose delivered according to the treatment planning system. RL signals from Al2O3:C can be used for real-time dose rate measurements with a time resolution of similar to 0.1 s and a spatial resolution only limited by the size of the detector (< 0.5 mm). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/686081
- author
- Andersen, C. E. ; Marckmann, C. J. ; Aznar, M. C. ; Botter-Jensen, L. ; Kjaer-Kristoffersen, F. and Medin, Joakim LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Radiation Protection Dosimetry
- volume
- 120
- issue
- 1-4
- pages
- 41468 - 41468
- publisher
- Oxford University Press
- external identifiers
-
- wos:000240692000002
- scopus:33749656846
- ISSN
- 1742-3406
- DOI
- 10.1093/rpd/nci600
- language
- English
- LU publication?
- yes
- id
- ea9781d5-330c-410f-9192-496e903ccd7a (old id 686081)
- date added to LUP
- 2016-04-01 15:54:52
- date last changed
- 2022-04-22 18:16:16
@article{ea9781d5-330c-410f-9192-496e903ccd7a, abstract = {{Although the radioluminescence (RL) signal from optical fibre Al2O3:C dosemeters used in medical applications is essentially proportional to dose rate, the crystals used so far are imperfect in the sense that their RL sensitivity changes with accumulated dose. A computational algorithm has been developed that corrects for these sensitivity changes. We further report on a new system that effectively separates the RL signal generated in the crystal from fluorescence and Cerenkov emission generated in the optical fibre cable using a gating technique in connection with pulsed linear accelerator radiation beams. The dosimetry system has been used for dose measurements in a phantom during an intensity-modulated radiation therapy (IMRT) treatment with 6 MV photons. The RL measurement results are in excellent agreement (i.e. within 1%) with both the OSL results and the dose delivered according to the treatment planning system. RL signals from Al2O3:C can be used for real-time dose rate measurements with a time resolution of similar to 0.1 s and a spatial resolution only limited by the size of the detector (< 0.5 mm).}}, author = {{Andersen, C. E. and Marckmann, C. J. and Aznar, M. C. and Botter-Jensen, L. and Kjaer-Kristoffersen, F. and Medin, Joakim}}, issn = {{1742-3406}}, language = {{eng}}, number = {{1-4}}, pages = {{41468--41468}}, publisher = {{Oxford University Press}}, series = {{Radiation Protection Dosimetry}}, title = {{An algorithm for real-time dosimetry in intensity-modulated radiation therapy using the radioluminescence signal from Al2O3 : C}}, url = {{http://dx.doi.org/10.1093/rpd/nci600}}, doi = {{10.1093/rpd/nci600}}, volume = {{120}}, year = {{2006}}, }