| CT reconstruction from portal images acquired during volumetric-modulated arc therapy. | |
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MedLine Citation:
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PMID: 20826901 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Volumetric-modulated arc therapy (VMAT), a form of intensity-modulated arc therapy (IMAT), has become a topic of research and clinical activity in recent years. As a form of arc therapy, portal images acquired during the treatment fraction form a (partial) Radon transform of the patient. We show that these portal images, when used in a modified global cone-beam filtered backprojection (FBP) algorithm, allow a surprisingly recognizable CT-volume to be reconstructed. The possibility of distinguishing anatomy in such VMAT-CT reconstructions suggests that this could prove to be a valuable treatment position-verification tool. Further, some potential for local-tomography techniques to improve image quality is shown. |
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Authors:
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G Poludniowski; M D R Thomas; P M Evans; S Webb |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-08 |
Journal Detail:
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Title: Physics in medicine and biology Volume: 55 ISSN: 1361-6560 ISO Abbreviation: Phys Med Biol Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-22 Completed Date: 2011-01-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401220 Medline TA: Phys Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 5635-51 Citation Subset: IM |
Affiliation:
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Joint Department of Physics, Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Downs Road, Sutton, Surrey, SM2 5PT UK. Gavin.Poludniowski@icr.ac.uk |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Esophageal Neoplasms
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radiography,
radiotherapy Humans Image Processing, Computer-Assisted / methods* Radiotherapy, Computer-Assisted / methods* Radiotherapy, Intensity-Modulated* Tomography, X-Ray Computed / methods* |
| Grant Support | |
ID/Acronym/Agency:
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C46/A2131//Cancer Research UK |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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