Radiotherapy delivery during motion
(2010) In Journal of Physics: Conference Series 250.- Abstract
This paper discusses the 3D dosimetric consequences of radiotherapy delivery during two kinds of motion, (i) the respiratory motion by the patient and (ii) the motion by the gantry while rotating around the patient. Respiratory motion primarily compromises treatments in the thorax and abdomen regions. Several strategies to reduce respiratory motion effects have been developed or are under development. The organ motion could for instance be measured and incorporated in the treatment planning, or adapted to by using respiratory gating and tumour-tracking delivery techniques. Gantry motion is involved in various forms of intensity-modulated arc-therapy techniques. The purpose is to increase the modulation by simultaneously varying the MLC... (More)
This paper discusses the 3D dosimetric consequences of radiotherapy delivery during two kinds of motion, (i) the respiratory motion by the patient and (ii) the motion by the gantry while rotating around the patient. Respiratory motion primarily compromises treatments in the thorax and abdomen regions. Several strategies to reduce respiratory motion effects have been developed or are under development. The organ motion could for instance be measured and incorporated in the treatment planning, or adapted to by using respiratory gating and tumour-tracking delivery techniques. Gantry motion is involved in various forms of intensity-modulated arc-therapy techniques. The purpose is to increase the modulation by simultaneously varying the MLC positions, the rotation speed of the gantry, and the dose rate during the treatment. The advantage of these techniques is the increased possibility to deliver a high absorbed dose to the target volume while minimizing the dose to normal tissues. However, the dosimetric uncertainties associated with motion, small fields and steep dose gradients, has to be evaluated in detail, and this requires adequate true 3D dose-verification tools.
(Less)
- author
- Ceberg, Sofie LU and Bäck, Sven Å J. LU
- organization
- publishing date
- 2010-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physics: Conference Series
- volume
- 250
- article number
- 012087
- publisher
- IOP Publishing
- external identifiers
-
- scopus:78650574842
- ISSN
- 1742-6588
- DOI
- 10.1088/1742-6596/250/1/012087
- language
- English
- LU publication?
- yes
- id
- 3f4924ba-edd2-47b8-962b-d918d9d211c4
- date added to LUP
- 2019-06-20 11:12:41
- date last changed
- 2022-01-31 22:08:08
@article{3f4924ba-edd2-47b8-962b-d918d9d211c4, abstract = {{<p>This paper discusses the 3D dosimetric consequences of radiotherapy delivery during two kinds of motion, (i) the respiratory motion by the patient and (ii) the motion by the gantry while rotating around the patient. Respiratory motion primarily compromises treatments in the thorax and abdomen regions. Several strategies to reduce respiratory motion effects have been developed or are under development. The organ motion could for instance be measured and incorporated in the treatment planning, or adapted to by using respiratory gating and tumour-tracking delivery techniques. Gantry motion is involved in various forms of intensity-modulated arc-therapy techniques. The purpose is to increase the modulation by simultaneously varying the MLC positions, the rotation speed of the gantry, and the dose rate during the treatment. The advantage of these techniques is the increased possibility to deliver a high absorbed dose to the target volume while minimizing the dose to normal tissues. However, the dosimetric uncertainties associated with motion, small fields and steep dose gradients, has to be evaluated in detail, and this requires adequate true 3D dose-verification tools.</p>}}, author = {{Ceberg, Sofie and Bäck, Sven Å J.}}, issn = {{1742-6588}}, language = {{eng}}, month = {{01}}, publisher = {{IOP Publishing}}, series = {{Journal of Physics: Conference Series}}, title = {{Radiotherapy delivery during motion}}, url = {{http://dx.doi.org/10.1088/1742-6596/250/1/012087}}, doi = {{10.1088/1742-6596/250/1/012087}}, volume = {{250}}, year = {{2010}}, }