彩色多普勒超声检查中阻力指数在肝脏病变鉴别诊断中的应用
Resistance index in differential diagnosis of liver lesions by color doppler ultrasonography.
作者信息
Wang Yan, Wang Wen-Ping, Ding Hong, Huang Bei-Jian, Mao Feng, Xu Zhi-Zhang
机构信息
Department of Ultrasound, Ziongshan Hospital of Shanghai Fudan University, Shanghai 200032, China.
出版信息
World J Gastroenterol. 2004 Apr 1;10(7):965-7. doi: 10.3748/wjg.v10.i7.965.
AIM
To investigate the specific value of resistance index (RI) in color Doppler ultrasonography in the diagnosis of focal hepatic lesions.
METHODS
Eight hundred patients with 893 hepatic solid lesions were studied with color Doppler flow imaging (CDFI) and pulsed Doppler, including 644 malignant cases (596 primary malignant liver tumors, and 48 metastatic liver tumors), 156 benign cases. All were confirmed by operation and pathology.
RESULTS
The detection rate of arterial flow in malignant tumors was 92%, and 52% in benign lesions. Doppler spectrum analysis showed that the resistance index in primary malignant tumors was 0.75+/-0.12, 0.73+/-0.09 in metastatic tumors, and was below 0.6 in benign lesions. The difference was significant (P<0.001). This difference was related with its histopathologic structure.
CONCLUSION
The arterial flow with RI > or =0.6 identified by CDFI within the liver lesion can be regarded as a criterion of malignant tumors, RI<0.6 can be regarded as benign disorders. RI is useful in differential diagnosis of liver neoplasms.
目的
探讨彩色多普勒超声检查中阻力指数（RI）对肝脏局灶性病变的诊断价值。
方法
应用彩色多普勒血流成像（CDFI）及脉冲多普勒对800例患者的893个肝脏实性病变进行研究，其中恶性病变644例（原发性肝癌596例，肝转移瘤48例），良性病变156例。所有病例均经手术及病理证实。
结果
恶性肿瘤的动脉血流检出率为92%，良性病变为52%。多普勒频谱分析显示，原发性肝癌的阻力指数为0.75±0.12，肝转移瘤为0.73±0.09，良性病变低于0.6，差异有显著性（P<0.001）。这种差异与其组织病理学结构有关。
结论
CDFI显示肝脏病变内RI≥0.6的动脉血流可作为恶性肿瘤的诊断标准，RI<0.6可考虑为良性病变。RI对肝脏肿瘤的鉴别诊断有一定价值。
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