肝脏肿瘤超声血管造影的定量分析

Quantitative Analysis in Ultrasonic Angiography of Hepatic Tumor

报道了３０例肝肿瘤患者进行肝动脉超声血管造影和对１０只兔进行门静脉超声血管造影的定量分析的结果。①肝肿瘤造影前后的平均灰度值均值分别为３８．５６±７．２３、８２．６４±８．７６，Ｐ值＜０．０１；②肝肿瘤造影前后平均灰度值分贝数增加的情况为＜１０有５例、１０～３０有８例、＞３０有１７例；③实验动物肝组织超声造影前后的平均灰度值分别为４５．６０±５．２５、７８．２３±５．３０，Ｐ值＜０．０１。结果表明：①肝脏平均灰度值的测定能够初步定量分析肝脏肿瘤声学造影前后的灰阶增强的程度及分布情况，有利于判定肿块的血供及其病理性质；②图像减影技术能够更清楚显示肿块的形态结构及其动脉血供。

The results of quantitative analysis hepatic artery ultrasonic angiography in 30 cases of hepatic tumors and portal vein ultrasonic angiography in 10 rabits were reported. In hepatic tumors, the average gray scale before and after angiography were 38.56±7.23 and 82.64±8.76 respectively (P< 0.01 ). In hepatic tumors, the increase of decibel in average gray scale were in 5<10, 8 10 to 30 and 17 cases >30. In liver tissues of experimental animals, the average gray scale before and after angiography were 45.60±5.25 and 78.23±5.30 respectively (P< 0.01 ). The results suggest that: ① measuring the average gray scale of the liver can make a preliminary quantitative analysis of the extent and distribution of the gray scale in crease of hepatic tumors before and after acoustic angiography. It helps to assess the blood supply and pathologic character of the tumer. ② The use of image subtraction technique in acoustic angiography show more clearly the morphology, size, profile of border and internal and structure of the tumor and it can display better the shape and branches of the supplying vessels.