新型 CT 扫描采集探头入口剂量的体模研究，该采集探头也可作为管预热。
PHANTOM STUDY OF THE ENTRANCE SURFACE DOSE OF A NEW CT SCOUT ACQUISITION THAT ALSO SERVES AS A TUBE WARM-UP.
机构信息
Department of Radiology, Chiba University Hospital, 1-8-1, Inohana, Chuo-ku, Chiba City, Chiba 260-8677, Japan.
School of Radiological Technology, Health Sciences, Graduate School of Medicine, Tohoku University, 2-1 Seiryo, Aoba, Sendai, Miyagi, 980-8575, Japan.
出版信息
Radiat Prot Dosimetry. 2022 May 13;198(6):334-338. doi: 10.1093/rpd/ncac057.
We determined the effect of a new scout image acquisition technique ('smart scout'), which also serves as a tube warm-up, on radiation dose and automatic exposure control (AEC) mA settings. The entrance surface dose (ESD) of a chest phantom with and without the smart scout was measured. A conical AEC phantom was scanned in the setting for abdominal CT, and AEC curves were generated. ESD when the smart scout was not used was 0.75 mGy at 120 kV, 50 mA. ESD when using the smart scout was 0.24 mGy for a body habitus setting of 'Less', 0.54 mGy for 'Moderate' and 0.95 mGy for 'More'. When the diameter of the subject was ≥32 cm, the mA setting became lower in 'Less'. The smart scout reduced exposure at the 'Less' and Moderate' settings compared to the conventional scout scan.
我们确定了一种新的扫描图像采集技术（“智能扫描”）的效果，该技术还可作为管预热，以降低辐射剂量和自动曝光控制（AEC）mA 设置。测量了带有和不带有智能扫描的胸部体模的入口表面剂量（ESD）。在腹部 CT 设置中扫描锥形 AEC 体模，并生成 AEC 曲线。在不使用智能扫描的情况下，120kV 时 50mA 的 ESD 为 0.75mGy。当使用智能扫描时，“小”体型设置的 ESD 为 0.24mGy，“中”体型设置的 ESD 为 0.54mGy，“大”体型设置的 ESD 为 0.95mGy。当受检者的直径≥32cm 时，“小”体型设置的 mA 设置会降低。与传统的扫描相比，智能扫描可降低“小”体型和“中”体型设置的曝光。
Zotero 插件