This study aimed to explore the diagnosis of urinary calculi through utilisation of low-dose computed tomography (LDCT) with adaptive statistical iterative reconstruction (ASIR). Data from 140 patients that had undergone pathological or operative diagnosis with urinary calculi were analysed. Patients were divided into two groups based on whether they received conventional-dose computed tomography (CDCT) or LDCT, respectively, followed by filtered back projection or ASIR. Average CDCT radiation doses were roughly 4-fold higher than LDCT doses. Despite this difference, there were no significant differences between groups with respect to stone size or location, image quality (P = 0.261), image noise (P = 0.153) and diagnostic efficacy (P = 0.371). LDCT is an effective approach to urinary calculi diagnosis, performing to ASIR while decreasing the effective radiation dose, improving the safety of this procedure.

中文翻译：

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低剂量CT与自适应统计迭代重建在尿路结石诊断中的应用。

这项研究旨在探索通过利用低剂量计算机断层扫描（LDCT）和自适应统计迭代重建（ASIR）来诊断尿路结石。分析了140例经尿路结石病理或手术诊断的患者的数据。根据患者分别接受常规剂量计算机断层扫描（CDCT）或LDCT，然后将其过滤后背投影或ASIR分为两组。平均CDCT辐射剂量大约是LDCT剂量的4倍。尽管存在这种差异，但在结石大小或位置，图像质量（P  = 0.261），图像噪声（P  = 0.153）和诊断功效（P = 0.371）。LDCT是一种诊断尿路结石的有效方法，可对ASIR进行评估，同时降低有效放射剂量，从而提高该过程的安全性。