In Reply We thank Bernheim for his thoughtful comments on our recently published Original Investigation.¹ The American College of Radiology (ACR) and Centers for Medicare & Medicaid Services recommend a maximum volumetric computed tomography dose index (CTDIvol) of 3 mGy for lung cancer screening.^2,3 As a measure of the average dose per slice, CTDIvol will reflect many of the scanning decisions made by the radiologists and technologists, and reliably measure average doses that patients will receive.

中文翻译：

---

肺癌筛查扫描的有效辐射剂量－答复

在答复中，我们感谢伯恩海姆对我们最近发表的《原始调查》发表的深思熟虑的评论。¹美国放射学院（ACR）和Medicare＆Medicaid Services中心建议，用于肺癌筛查的最大体积计算机断层摄影剂量指数（CTDIvol）为3 mGy。^{2 ，3}如每片的平均剂量的量度，CTDIvol将反映许多由放射科医生和技术专家作出的扫描决定的，且可靠地测量平均剂量的患者将接受。