肝脏疾病对双螺旋CT门静脉血管成像质量的影响  

The Influence of Liver Diseases on the Image Quality of Dual Spiral Computed Tomographic Portography

作　　者：罗建光[1] 杨东益[1] 刘顾岗[1] 杨树仁[1] 李德泰[1] 沈树斌[1] 

机构地区：[1]湖南医科大学附属第二医院放射科

出　　处：《临床放射学杂志》1999年第5期277-279,共3页Journal of Clinical Radiology

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.

关 键 词：门静脉 血管造影 双螺旋CT CT DSCTP 肝疾病 

分 类 号：R816.5[医药卫生—放射医学] R816.2[医药卫生—临床医学]