The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, 601 N. Caroline St., Baltimore, MD 21287-0856, USA.
Pediatr Radiol. 2011 Sep;41 Suppl 2:493-7. doi: 10.1007/s00247-011-2169-1. Epub 2011 Aug 17.
The use of imaging in both hospital and non-hospital settings has expanded to more than 70 million CT procedures in the United States per year, with nearly 10% of procedures performed on children. The availability of multiple-row detector CT (MDCT) systems has played a large part in the wider usage of CT. This rapid increase in CT utilization combined with an increasing concern with regard to radiation exposure and associated risk demands the need for optimization of MDCT protocols. This manuscript will briefly discuss how technology has changed in regard to MDCT protocols, helping to reduce radiation dose in CT, especially in pediatric imaging.
在美国，每年有超过 7000 万例 CT 检查在医院和非医院环境中使用，其中近 10%的检查是针对儿童的。多排探测器 CT（MDCT）系统的出现是 CT 更广泛应用的主要原因之一。CT 利用率的快速增长，再加上对辐射暴露和相关风险的日益关注，都要求对 MDCT 方案进行优化。本文将简要讨论 MDCT 方案在技术方面的变化，这些变化有助于降低 CT 中的辐射剂量，特别是在儿科成像中。
