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肝脏疾病对双螺旋CT门静脉血管成像质量的影响 被引量:4

The Influence of Liver Diseases on the Image Quality of Dual Spiral Computed Tomographic Portography
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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
关键词 门静脉 血管造影 双螺旋CT CT DSCTP 肝疾病 Portal veinAngiographyTechniqueDual spiral computed tomography
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