Clinical Application Of Lava Dynamic Enhanced Mri In Hepatic Space Occupying Lesions

Objective:To evaluate the clinical application of LAVA (Liver Acquisition with Volume Acceleration) dynamic contrast-enhanced MR scanning in the diagnosis of hepatic space occupying lesions. Methods:Review the images of 89 patients of singal hepatic space occupying lesions, underwent MRI-derived techniques including T1WI, T2WI+fat suppression, and 4 phases-dynamic enhancement, as well as conventional enhanced scan. Analyse the detection of final results and the accuracy of aharacteristic diagnosis. Results:In the 89 patients of hepatic space occupying lesions had LAVA dynamic enhanced MRI, LAVA had detected and diagnosed 12(93%),10(80%)tiny cases under1.0cm, conventional enhanced scan had detected and diagnosed 7 (53%),6 (53%) with tiny leisions as well.The sensitivity, specificity, positive predictive value,and negative predictive value was87.5%,88.89%,78.8%,92.9% respectively, The sensitivity, specificity, positive predictive value, and negative predictive value of conventional enhanced scan was 65.22%,73.33%,88.24%,40.74% respectively. There is significant difference (p<0.05) between them.25 leisions larger than 3.0cm, had been made MPR (multiplanar reconstruction),MIP (maximum intensity projection) of vascular reformation,10(40.5%)cases in hepatocellular carcinoma showed the feeding artery,8(33.3%) provided portal vein,4(16.7%)depicted the tumor thrombosis.1(12.0%) of the haemangioma case showed it's artery. Conclusion:LAVA had a better detection of small hepatic tumors, especially, small hepatic cancer. LAVA provided important foundation for clinic, and is an effective method for improving detection and characterization of focal liver lesions. LAVA can provide more details about hepatic vascular anatomy as well, is a very important examination in clinic.