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Radiotherapy delivery during motion

Ceberg, Sofie LU and Bäck, Sven Å J. LU (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.

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author
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organization
publishing date
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}},
}