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Title: Target motion measurement without implanted markers and its validation by comparison with manually obtained data

Abstract

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.

Authors:
; ; ; ; ;  [1];  [2]
  1. Klinik und Poliklinik fuer Strahlentherapie, Universitaet Wuerzburg, Josef-Schneider-Str. 11, 97080 Wuerzburg (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
20726907
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 32; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; CARCINOMAS; COMPUTERIZED TOMOGRAPHY; LUNGS; PATIENTS; PROSTATE; RADIOTHERAPY; RESPIRATION; VALIDATION

Citation Formats

Vences, Lucia, Wulf, Joern, Vordermark, Dirk, Sauer, Otto, Berlinger, Kajetan, Roth, Michael, and Lehrstuhl fuer Informatik IX, Technische Universitaet Muenchen, Boltzmannstr. 3, 85748 Garching. Target motion measurement without implanted markers and its validation by comparison with manually obtained data. United States: N. p., 2005. Web. doi:10.1118/1.2103447.
Vences, Lucia, Wulf, Joern, Vordermark, Dirk, Sauer, Otto, Berlinger, Kajetan, Roth, Michael, & Lehrstuhl fuer Informatik IX, Technische Universitaet Muenchen, Boltzmannstr. 3, 85748 Garching. Target motion measurement without implanted markers and its validation by comparison with manually obtained data. United States. doi:10.1118/1.2103447.
Vences, Lucia, Wulf, Joern, Vordermark, Dirk, Sauer, Otto, Berlinger, Kajetan, Roth, Michael, and Lehrstuhl fuer Informatik IX, Technische Universitaet Muenchen, Boltzmannstr. 3, 85748 Garching. Tue . "Target motion measurement without implanted markers and its validation by comparison with manually obtained data". United States. doi:10.1118/1.2103447.
@article{osti_20726907,
title = {Target motion measurement without implanted markers and its validation by comparison with manually obtained data},
author = {Vences, Lucia and Wulf, Joern and Vordermark, Dirk and Sauer, Otto and Berlinger, Kajetan and Roth, Michael and Lehrstuhl fuer Informatik IX, Technische Universitaet Muenchen, Boltzmannstr. 3, 85748 Garching},
abstractNote = {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.},
doi = {10.1118/1.2103447},
journal = {Medical Physics},
number = 11,
volume = 32,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}