Department of medical imaging, HIA Legouest, 57077 Metz, France.
Department of biochemistry, hôpital Central, CHU de Nancy, 54000 Nancy, France.
Diagn Interv Imaging. 2016 Apr;97(4):393-400. doi: 10.1016/j.diii.2015.05.013. Epub 2015 Oct 27.
Computed tomography (CT) has become the reference technique in medical imaging for renal colic, to diagnose, plan treatment and explore differential diagnosis. Its main limitation is the radiation dose, especially as urinary stone disease tends to relapse and mainly affects young people. It is therefore essential to reduce the CT radiation dose when renal colic is suspected. The goal of this review was twofold. First, we wanted to show how to use low-dose CT in patients with suspected renal colic in current clinical practice. Second, we wished to discuss the different ways of reducing CT radiation dose by considering both behavioral and technological factors. Among the behavioral factors, limiting the scan coverage area is a straightforward and effective way to reduce the dose. Improvement of technological factors relies mainly on using automatic tube current modulation, lowering the tube voltage and current as well using iterative reconstruction.
计算机断层扫描（CT）已成为医学影像学中诊断肾绞痛的参考技术，用于诊断、治疗计划和探索鉴别诊断。其主要限制是辐射剂量，特别是由于尿路结石病有复发的倾向，主要影响年轻人。因此，当怀疑肾绞痛时，降低 CT 辐射剂量至关重要。本次综述的目的有两个。首先，我们想展示如何在当前的临床实践中在疑似肾绞痛的患者中使用低剂量 CT。其次，我们希望通过考虑行为和技术因素来讨论降低 CT 辐射剂量的不同方法。在行为因素中，限制扫描覆盖区域是一种简单有效的降低剂量的方法。技术因素的改进主要依赖于使用自动管电流调制、降低管电压和电流以及使用迭代重建。
