治疗性质子束点扫描的计算局限性。

Computed limitations of spot scanning for therapeutic proton beams.

作者信息

Levin C V, Gonin R, Wynchank S

机构信息

Department of Radiotherapy, Groote Schuur Hospital, Observatory, Cape Town, South Africa.

出版信息

Int J Biomed Comput. 1988 Oct;23(1-2):33-41. doi: 10.1016/0020-7101(88)90061-x.

DOI:10.1016/0020-7101(88)90061-x

PMID:2851557

Abstract

A calculation depending on the computed fit of a novel mathematical model of the depth dose distribution for a therapeutic proton beam in water and its relevance to a spot scanning system are described. The resulting requirements for lateral and longitudinal precision of the irradiated spots are derived using the standard criterion for allowed dose variation within the tumour volume and the implications of these exacting limits are discussed.

摘要

描述了一种基于新型数学模型计算的方法，该模型用于计算治疗性质子束在水中的深度剂量分布及其与点扫描系统的相关性。利用肿瘤体积内允许剂量变化的标准准则，得出了对照射点横向和纵向精度的要求，并讨论了这些严格限制的影响。