Vicens Rafael A, Rodriguez Joshua, Sheplan Lawrence, Mayo Cody, Mayo Lauren, Jensen Corey
Department of Radiology, Hospital Auxilio Mutuo, Hato Rey, PR, 00919, USA.
School of Medicine, Ponce Health Sciences University, Ponce, PR, USA.
Abdom Imaging. 2015 Oct;40(7):2645-59. doi: 10.1007/s00261-015-0407-y.
Brachytherapy, also known as sealed source or internal radiation therapy, involves placement of a radioactive source immediately adjacent to or within tumor, thus enabling delivery of a localized high dose of radiation. Compared with external beam radiation which must first pass through non-target tissues, brachytherapy results in less radiation dose to normal tissues. In the past decade, brachytherapy use has markedly increased, thus radiologists are encountering brachytherapy devices and their associated post-treatment changes to increasing degree. This review will present a variety of brachytherapy devices that radiologists may encounter during diagnostic pelvic imaging with a focus on prostate and gynecologic malignancies. The reader will become familiar with the function, correct position, and potential complications of brachytherapy devices in an effort to improve diagnostic reporting and communication with clinicians.
近距离放射治疗，也称为密封源或内照射治疗，是将放射源放置在肿瘤紧邻处或肿瘤内部，从而能够给予局部高剂量辐射。与必须先穿过非靶组织的外照射放疗相比，近距离放射治疗对正常组织造成的辐射剂量更低。在过去十年中，近距离放射治疗的应用显著增加，因此放射科医生越来越多地遇到近距离放射治疗设备及其相关的治疗后变化。本综述将介绍放射科医生在盆腔诊断成像过程中可能遇到的各种近距离放射治疗设备，重点关注前列腺癌和妇科恶性肿瘤。读者将熟悉近距离放射治疗设备的功能、正确位置和潜在并发症，以努力改进诊断报告并加强与临床医生的沟通。
