Mang Thomas, Lampichler Katharina, Scharitzer Martina
Universitätsklinik für Radiologie und Nuklearmedizin, Medizinische Universität Wien, Währinger Gürtel 18-20, 1090, Wien, Österreich.
Radiologie (Heidelb). 2023 Jun;63(6):418-428. doi: 10.1007/s00117-023-01153-4. Epub 2023 May 30.
Dedicated radiological expertise and a high-quality examination, performed according to current technical standards and for accepted indications, are prerequisite to achieve excellent results with CT colonography (CTC).
The aim of this article is to review current standards of the examination technique as well as indications and contraindications for CTC based on recent recommendations and guidelines.
Based on extensive literature research, current knowledge about the examination technique and the indications and contraindications is summarized.
CTC is the radiological examination of choice for the detection of colorectal neoplasia. Beside incomplete or refused colonoscopy and contraindications to colonoscopy, CTC is also a noninvasive option for opportunistic colorectal cancer screening. The examination technique is based on a CTC-specific patient preparation scheme that includes fecal tagging, colonic distension, low-dose CT scans in two patient positions and a combined 2D and 3D data evaluation.
Performing CTC according to current technical standards is prerequisite for high-quality examinations and is, thus, also a key factor to obtain a correct diagnosis. CTC is a noninvasive examination, capable of providing clinically relevant diagnoses for a wide range of indications.
具备专业的放射学知识并按照当前技术标准及公认的适应症进行高质量检查，是CT结肠成像（CTC）取得优异结果的前提条件。
本文旨在根据近期的建议和指南，综述当前CTC检查技术的标准以及适应症和禁忌症。
基于广泛的文献研究，总结了关于检查技术以及适应症和禁忌症的现有知识。
CTC是检测结直肠肿瘤的首选放射学检查方法。除了结肠镜检查不完全或被拒绝以及结肠镜检查的禁忌症外，CTC也是机会性结直肠癌筛查的一种非侵入性选择。检查技术基于特定的CTC患者准备方案，包括粪便标记、结肠扩张、在两个患者体位进行低剂量CT扫描以及二维和三维数据联合评估。
按照当前技术标准进行CTC检查是高质量检查的前提条件，因此也是获得正确诊断的关键因素。CTC是一种非侵入性检查，能够为广泛的适应症提供具有临床相关性的诊断。
