Document Detail

Resistance index in differential diagnosis of liver lesions by color doppler ultrasonography.
MedLine Citation:
PMID:  15052675     Owner:  NLM     Status:  MEDLINE    
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.
Yan Wang; Wen-Ping Wang; Hong Ding; Bei-Jian Huang; Feng Mao; Zhi-Zhang Xu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  World journal of gastroenterology : WJG     Volume:  10     ISSN:  1007-9327     ISO Abbreviation:  World J. Gastroenterol.     Publication Date:  2004 Apr 
Date Detail:
Created Date:  2004-03-30     Completed Date:  2004-05-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100883448     Medline TA:  World J Gastroenterol     Country:  China    
Other Details:
Languages:  eng     Pagination:  965-7     Citation Subset:  IM    
Department of Ultrasound, Ziongshan Hospital of Shanghai Fudan University, Shanghai 200032, China.
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MeSH Terms
Aged, 80 and over
Diagnosis, Differential
Liver Circulation*
Liver Diseases / physiopathology*,  ultrasonography*
Middle Aged
Ultrasonography, Doppler, Color*
Vascular Resistance*

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