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Isocentric technique : ウィキペディア英語版 | Isocentric technique
An isocentric technique is where all beams used in a radiation treatment have a common focus point, a.k.a. the isocenter. ==Definition== The idealized intersection point of the gantry axis of rotation with that of the collimator and treatment table is known as the mechanical isocenter. In practice, due to the heavy weight and mechanical imperfections of the system, the isocenter is not a single point and its location changes with the rotation of the gantry, collimator or couch. This causes uncertainties in the determination of isocenter position and therefore, the isocenter is usually defined within a sphere.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Isocentric technique」の詳細全文を読む
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