[Method for evaluating the mechanical isocenter of the gantry of a radiotherapy machine with motion picture trace analysis software].

Nobutaka Yanano, Toshioh Fujibuchi

研究成果: Contribution to journalArticle査読

抄録

In recent years, development of advanced radiotherapy technology has resulted in an improvement in radiotherapy. Although the radiotherapy system has improved, the effect of the gap, the gyration center, and distortion of the rotation orbit cannot be neglected. Therefore, a verification method for a geometrical isocenter and rotation orbit in a three-dimension (3D) space is required. We developed a verification method for determination of the geometrical isocenter. In this method, the rotation of the gantry that applied the measured target from two directions was imaged and analyzed using animation pursuit analysis software. The measurement targets were pursued by analysis, and the rotation orbit of the target was visually evaluated from obtained coordinates and displacement distance. The gyration center in 3D space was calculated from pursued coordinates and compared with the intersection in the side laser and crosshair. In this verification method, the rotation orbit and geometrical isocenter in the 3D space were confirmed, and visually evaluated. Thus, this method was effective in verifying the geometrical isocenter by solving the problem of the measurement precision and reproducibility.

本文言語英語
ページ(範囲)1499-1507
ページ数9
ジャーナルNihon Hoshasen Gijutsu Gakkai zasshi
68
11
DOI
出版ステータス出版済み - 2012

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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