CAJ | 학술논문

随着CT技术的发展，尤其是近几年双能CT的出现，不仅提高了影像质量，而且能够实现物质定量分析，极大拓展了临床应用范围，但同时也对优化应用提出了新的挑战。在上腹部检查中由于肝脏双重供血的特点造成了增强检查的特殊性，这突出体现在门静脉期影像质量难以达到预期而降低诊断可靠性上。因此，分析影响门静脉期增强的对比剂、病人和CT扫描等方面因素，总结在提高影像质量的同时降低对比剂剂量和辐射剂量的研究进展，并展望基于双能CT的个性化的上腹部增强检查计划设计方案。
수착CT기술적발전，우기시근궤년쌍능CT적출현，불부제고료영상질량，이차능구실현물질정량분석，겁대탁전료림상응용범위，단동시야대우화응용제출료신적도전。재상복부검사중유우간장쌍중공혈적특점조성료증강검사적특수성，저돌출체현재문정맥기영상질량난이체도예기이강저진단가고성상。인차，분석영향문정맥기증강적대비제、병인화CT소묘등방면인소，총결재제고영상질량적동시강저대비제제량화복사제량적연구진전，병전망기우쌍능CT적개성화적상복부증강검사계화설계방안。
With the continuing development of computed tomographic (CT) technology, especially dual-energy CT (DECT), new clinical applications has been discovered based on the capability of material decomposition and improved image quality accordingly. Innovative CT technology has introduced new challenges in optimization of clinical radiology practice in return. One of the challenges is with contrast enhancement of upper abdominal CT at portal venous phase which is difficult to optimize due to the double blood supply. In this article, contrast medium, patient and CT scanning factors associated with contrast enhancement at portal venous phase were addressed and discussed. Published studies on improving image quality while reducing contrast medium dose and radiation dose were reviewed and interpreted. A new paradigm of individualized examination planning system based on dual-energy CT to optimize contrast medium administration and scanning protocol was proposed.