UT MD Anderson Cancer Center, Houston, TX, USA.
Phys Med. 2020 Apr;72:30-31. doi: 10.1016/j.ejmp.2020.03.005. Epub 2020 Mar 18.
Recent publications show that some patients receive high cumulative radiation doses from recurrent CT examinations. Most of these patients had a diagnosis of malignancy, meaning that there was a likelihood that they would receive radiation therapy, possibly with image guidance. Patients receiving X-ray-based image-guided radiation therapy (IGRT) receive even more imaging dose, including to volumes of tissue outside the tumor target volume. The benefits of IGRT must be considered in light of the additional dose received. Monitoring and recording of the imaging dose should be considered, as should techniques to reduce both the dose and volume irradiated.
最近的出版物表明，一些患者在反复进行 CT 检查时接受了高累积辐射剂量。这些患者大多数被诊断患有恶性肿瘤，这意味着他们有可能接受放射治疗，可能需要图像引导。接受基于 X 射线的图像引导放射治疗（IGRT）的患者接受的影像学剂量甚至更多，包括肿瘤靶区外的组织体积。必须考虑 IGRT 的额外剂量来权衡其获益。应考虑对影像学剂量进行监测和记录，以及减少受照剂量和体积的技术。
