摘要
目的:评价肝脏疾病因素对双螺旋CT门脉血管成像(DSCTP)质量的影响。材料与方法:97例患者进行了DSCTP成像,其中肝脏CT扫描正常或相对轻度异常者62例(甲组),肝脏病变较严重者35例(乙组)。螺距(pitch)为1~1.5,层厚为2.5~5mm。采用MIP法重建DSCTP影像。比较甲乙两组DSCTP影像质量。结果:在DSCTP图像质量方面,甲组优于乙组,即肝硬化、门脉高压、巨块型肝癌或弥漫型肝癌、门脉栓塞等,门脉成像质量差。结论:肝脏疾患可影响门脉强化或使门脉管径变细。
Objective: To investigate the influence of liver diseases on the image
quality of dual spiral computed tomographic portography (DSCTP). Materials and Methods:
DSCTP was performed in 97 patients with Elscint CT Twin unit. Among them, 62 cases (group A)
were normal or mildly abnormal on CT imaging, and the remaining 35 cases (group B) showed
serious abnormalities of the liver. Using 11.5mm pitch and 2.55mm collimation, all images
were reconstructed with maximum intensity projection (MIP) algorithm. The MIP image quality of
group A and group B was compared. Results: The quality of the MIP images of group A was
superior to that of group B. Big mass of liver carcinoma in one lobe may deteriorate the image
quality of this lobe. Conclusion: Liver lesions may worsen the portal vein enhancement, and
may narrow the portal vein, decreasing the image quality of DSCTP.
出处
《临床放射学杂志》
CSCD
北大核心
1999年第5期277-279,共3页
Journal of Clinical Radiology