Martin O'Neil Cancer Center, Adventist Health St. Helena, 10 Woodland Rd., St. Helena CA 94574.
Martin O'Neil Cancer Center, Adventist Health St. Helena, 10 Woodland Rd., St. Helena CA 94574.
Med Dosim. 2021;46(4):356-359. doi: 10.1016/j.meddos.2021.03.010. Epub 2021 Apr 30.
The purpose of this case study is to describe an external beam radiation therapy planning technique for carcinoma of the left breast. A female patient on protocol NSABP B-51/RTOG 1304 presented with unusual anatomy and large habitus. Deep inspiration breath-hold (DIBH) IMRT was used in conjunction a DIBH-3D conformal radiotherapy (3DCRT) tangential boost plan to meet the dose criteria for protocol compliance. Traditionally 3DCRT planning using a DIBH technique would be used for both billing authorization and as DIBH-IMRT involves a longer treatment time and more difficulty in terms of patient compliance; however, the patient tolerated the treatment very well. The subsequent treatment plan met all criteria per protocol with the exception of the ipsilateral lung, which passed with acceptable variation.
本病例研究旨在描述左侧乳腺癌的外照射放射治疗计划技术。一位按 NSABP B-51/RTOG 1304 方案治疗的女性患者具有异常的解剖结构和较大的体型。采用深吸气屏气（DIBH）调强放疗（IMRT）联合 DIBH-三维适形放疗（3DCRT）切线加量计划，以满足方案规定的剂量标准。传统上，3DCRT 计划使用 DIBH 技术既用于计费授权，也用于 DIBH-IMRT，因为后者治疗时间更长，患者依从性更差；然而，患者的治疗耐受性非常好。随后的治疗计划符合方案的所有标准，除了同侧肺，其变化在可接受范围内。
