Department of Radiation Medicine, Medical Physics Graduate Program, University of Kentucky, Lexington, KY, USA.
J Appl Clin Med Phys. 2020 Apr;21(4):6-12. doi: 10.1002/acm2.12829. Epub 2020 Feb 10.
Cone-beam CT-guided single dose of lung stereotactic body radiotherapy (SBRT) treatment with a flattening filter free (FFF) beam and volumetric modulated arc therapy (VMAT) is a safe and highly effective treatment modality for selective small lung lesions. Four-dimensional (4D) CT-based treatment plans were generated using advanced AcurosXB algorithm for heterogeneity corrections. 6X-FFF beam produced highly conformal radiosurgical dose distribution to the target and reduced lung SBRT fraction duration to less than 10 min for a single dose of 30 Gy, significantly improving patient comfort and clinic workflow. Early follow-up CT imaging results (mean, 8 months) show high local control rates (100%) with no acute lung or rib toxicity. Longer clinical follow-up in a larger patient cohort managed in this fashion is underway to further validate this treatment approach.
锥形束 CT 引导的单次肺部立体定向体部放疗(SBRT)治疗,采用平扫滤波器自由(FFF)射束和容积调强弧形治疗(VMAT),是一种安全且高效的治疗选择小的肺部病变的方法。基于四维(4D)CT 的治疗计划采用先进的 AcurosXB 算法进行不均匀性校正。6X-FFF 射束可使靶区获得高度适形的放射外科剂量分布,并将单次 30Gy 的肺部 SBRT 分割时间缩短至 10 分钟以内,显著提高了患者的舒适度和临床工作流程效率。早期的随访 CT 影像学结果(平均 8 个月)显示,局部控制率高达 100%,无急性肺或肋骨毒性。正在对这种治疗方式管理的更大患者队列进行更长时间的临床随访,以进一步验证这种治疗方法。