飞利浦SL25直线加速器产生的光子束特性。

Characteristics of photon beams from Philips SL25 linear accelerators.

作者信息

Palta J R, Ayyangar K, Daftari I, Suntharalingam N

机构信息

Department of Radiation Oncology, Bodine Center for Cancer Treatment, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania 19107.

出版信息

Med Phys. 1990 Jan-Feb;17(1):106-16. doi: 10.1118/1.596540.

DOI:10.1118/1.596540

PMID:2106609

Abstract

The Philips SL25 accelerator is a multimodality machine offering asymmetric collimator jaws and a new type of beam bending and transport system. It produces photon beams, nominally at 6 and 25 MV, and a scattered electron beam with nine selectable energies between 4 and 22 MeV. Dosimetric characteristics for the 6- and 25-MV photon beams are presented with respect to field flatness, surface and depth dose characteristics, isodose distribution, field size factors for both open and wedged fields, and narrow beam transmission data in different materials.

摘要

飞利浦SL25加速器是一台多模态设备，配备不对称准直器钳口以及新型束流弯曲和传输系统。它能产生标称能量为6兆伏和25兆伏的光子束，以及能量在4兆电子伏至22兆电子伏之间的九种可选能量的散射电子束。文中给出了6兆伏和25兆伏光子束在射野平坦度、表面和深度剂量特性、等剂量分布、开放野和楔形野的射野大小因子以及不同材料中的窄束传输数据等方面的剂量学特征。