肝断层及平面显像在肝占位性病变鉴别诊断中的意义──与B超、CT比较

本文对９２例临床可疑肝占位性病变患者进行了肝胶体及血池断层与平面显像，计算了肝血流灌注指数，并对照同期的病理及肝动脉造影资料，探讨了核素显像、ＣＴ及Ｂ超的诊断价值。研究表明，三种方法对肝癌及肝囊肿的诊断准确性无显著性差异（Ｐ＞０．０５），但断层显像对肝血管瘤的诊断（９３％）明显优于ＣＴ（８４％）和Ｂ超（８０％）；平面肝显像难以发现直径３ｃｍ以下的病变，对肝占位灶的检出率明显低于断层显像（Ｐ＜０．０５）。联合肝、胆道系统显像有助于降低假阳性率，其价值有待进一步探讨。

Significance of Liver Imaging in Differentiating Intrahepatic Space Occupying Lesions-Comparison of Radionuclide Scintigraphy,Ultrasound and CT

Hepatic SPECT and planar imaging of collid and blood pool was performed in 92 patients who were suspected focal liver lesions.Hepatic perfusion index (HPI) was also calculated. The diagnostic efficiency of radionuclide scintigraphy. CT and ultrasound was compared,associated with the result of pathology and x-ray angiography. The results showed SPECT (93%) was obviously superior to CT (84%)and ultrasound (80%) in diagnosing hepatic hemangioma (P<0.05). Whereas there were not evident difference in diagnosing liver cancer and cysts. Liver planar scintigraphy almost didn't find the lesions less than 3 cm, which was evidently inferior to SPECT in detecting hepatic local lesions (P< 0. 05) . Meanwhile, the study indicated that the alliance of liver collid and hepatobiliary system imaging was contributive to reduce false positivity.