Target motion measurement without implanted markers and its validation by comparison with manually obtained data
- Klinik und Poliklinik fuer Strahlentherapie, Universitaet Wuerzburg, Josef-Schneider-Str. 11, 97080 Wuerzburg (Germany)
For an effective radiotherapy the exact tumor location must be determined. The localization has to take into account patient's setup position as well as internal organ motion. Among the different localization methods, the use of a computer tomography (CT) scanner in the therapy room has been proposed recently. Achieving a CT with the patient on the therapy couch, a patient's treatment position is captured. We present a method to locate tumor considering internal organ motion and displacements due to respiration. We tested the method with prostate and lung patients. The method found the most probable tumor position as well as, for high-mobility tumors located in the lung, its trajectory during the respiratory cycle. The results of this novel method were validated by comparison with manually determined target position.
- OSTI ID:
- 20726907
- Journal Information:
- Medical Physics, Vol. 32, Issue 11; Other Information: DOI: 10.1118/1.2103447; (c) 2005 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-2405
- Country of Publication:
- United States
- Language:
- English
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