双源CT双能量虚拟平扫对肝脏常见良性病变的诊断价值

发布时间：2018-06-26 00:03

本文选题：双源CT + 双能量　；参考：《实用医学杂志》2017年09期

【摘要】：目的:探讨双源CT双能量虚拟平扫(VNC)在诊断肝脏常见良性病变的价值及限度。方法:利用双源CT对226例上腹部病变患者行常规平扫(CNC)及动脉期、门脉期双能量扫描,将门脉期数据经Liv-er VNC软件处理,获得VNC图像。对比分析其中117例肝脏常见良性病变在常规平扫(CNC)及虚拟平扫(VNC)中的检出数量,并比较单能模式与双能模式下的辐射剂量。结果:虚拟平扫检出钙化或结石58个(85.3%)、血管瘤28个(73.6%)低于常规平扫68个(100.0%)、37个(97.3%)(P0.05);虚拟平扫检出囊肿68个(95.8%)稍高于常规平扫65个(91.5%),检出脂肪肝12例(85.7%)稍低于常规平扫14例(100.0%)(P0.05);双能模式下CTDI、DLP及ED均低于单能模式,差异有统计学意义(P0.05)。结论:虚拟平扫对血管瘤、钙化或结石的检出低于常规平扫,对囊肿及脂肪肝的检出无差异。VNC技术可减低CT检查的辐射剂量,具有潜在的临床应用价值。
[Abstract]:Objective: to evaluate the value and limitation of dual source CT dual energy virtual plain scan (VNC) in the diagnosis of common benign liver lesions. Methods: 226 patients with epigastric lesions were examined by dual source CT with conventional plain scan (CNC), arterial phase and portal phase dual energy scanning. The portal phase data were processed by Liv-er VNC software and VNC images were obtained. A comparative analysis was made of 117 cases of common benign liver lesions detected in conventional plain scan (CNC) and virtual plain scan (VNC), and the radiation doses in monoenergetic mode and dual energy mode were compared between conventional plain scan (CNC) and virtual plain scan (VNC). Results: 58 cases (85.3%) of calcification or calculus were detected by virtual plain scan, 28 (73.6%) of hemangioma were lower than that of routine plain scan (100.0%), 37 (97.3%) were detected by virtual plain scan (P0.05), 68 (95.8%) of cysts detected by virtual plain scan were slightly higher than 65 (91.5%) of routine plain scan, 12 cases (85.7%) of fatty liver were slightly lower than that of routine plain scan (85.7%). 14 cases (100.0%) (P0.05), CTDID DLP and Ed were lower than those in monoenergetic mode, The difference was statistically significant (P0.05). Conclusion: the detection of hemangioma, calcification or stone by virtual plain scan is lower than that by conventional plain scan. There is no difference in detecting cyst and fatty liver. VNC technique can reduce the radiation dose of CT examination, and has potential clinical application value.
【作者单位】：遵义医学院附属医院影像科;贵州省人民医院放射科;
【基金】：贵州省科技厅社会发展科技攻关计划项目(编号:黔科合SY字[2013]3038号)
【分类号】：R575;R816.5

【相似文献】