Ultra-low-dose emergency chest computed tomography protocols in three vendors: A technical note.

IF 0.9 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Acta radiologica open Pub Date : 2023-03-01 DOI:10.1177/20584601231183900

Bo Mussmann, Peter Marshall Skov, Morten H Lorentzen, Helene Skjøt-Arkil, Ole Graumann, Michael B Andersen, Janni Jensen

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Abstract

Background: In suspected community-acquired pneumonia (CAP), chest CT is superior to the routinely obtained radiographs (CXR), but administers higher radiation doses. However, ultra-low-dose CT (ULDCT) has shown promising results.

Purpose: To compare radiation dose and image quality using standard and ULDCT protocols designed for a multicenter study encompassing three CT scanner models from GE, Canon, and Siemens.

Material and methods: Patients with suspected CAP were referred for non-contrast standard dose chest CT (NCCT) and ULDCT. Effective radiation dose and Contrast-to-Noise Ratio (CNR) was calculated.

Results: Mean effective doses were GE (n = 10) 6.93 mSv in NCCT and 0.27 mSv in ULDCT; Canon (n = 9) 3.48 in mSv NCCT and 1.11 mSv in ULDCT; Siemens (n = 10) 2.85 mSv in NCCT and 0.45 mSv in ULDCT. CNR was reduced by 29-39% in ULDCT.

Conclusion: The proposed CT protocols yielded dose reductions of 96%, 68%, and 84% using a GE, Canon, and Siemens scanner, respectively.

Abstract Image

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三家供应商的超低剂量急诊胸部计算机断层扫描协议:技术说明。

背景:在疑似社区获得性肺炎(CAP)中，胸部CT优于常规x线片(CXR)，但给予更高的辐射剂量。然而，超低剂量CT (ULDCT)已经显示出令人鼓舞的结果。目的:采用通用电气、佳能和西门子三种型号的CT扫描仪设计的多中心研究，比较标准和ULDCT方案的辐射剂量和图像质量。材料与方法:对疑似CAP患者行非对比标准剂量胸部CT (NCCT)和ULDCT检查。计算有效辐射剂量和噪声比(CNR)。结果:NCCT的平均有效剂量为GE (n = 10) 6.93 mSv, ULDCT的平均有效剂量为0.27 mSv;Canon (n = 9) NCCT为3.48 mSv, ULDCT为1.11 mSv;西门子(n = 10) NCCT为2.85 mSv, ULDCT为0.45 mSv。ULDCT组CNR降低29-39%。结论:采用GE、Canon和Siemens扫描仪，建议的CT方案分别产生96%、68%和84%的剂量减少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta radiologica open

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审稿时长

12 weeks