BACKGROUND: The various combination of multiphase enhancement multislice spiral CT(MSCT) makes the diagnosis of a small hepatocellular carcinoma(s HCC) on the background of liver cirrhosis possible. This study was to ...BACKGROUND: The various combination of multiphase enhancement multislice spiral CT(MSCT) makes the diagnosis of a small hepatocellular carcinoma(s HCC) on the background of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein(AFP) level could increase the diagnostic efficiency for s HCC.METHODS: This study included 35 s HCC patients and 52 cirrhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists employing a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic(ROC) curve analysis was performed to evaluate the diagnostic value of the three MSCT combination modes(arterial phase+portal-venous phase, arterial phase+delayed phase,arterial phase+portal-venous phase+delayed phase) and AFP levels for s HCC on the background of liver cirrhosis. RESULTS: The area under ROC curve(AUC), sensitivity,and specificity of the combination of arterial phase+portalvenous phase+delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase+portalvenous phase+delayed phase combination was significantly greater than that of the arterial phase+portal-venous phase(AUC=0.84, P=0.01) and arterial phase+delayed phase(AUC=0.85, P=0.03). Arterial phase+portal-venous phase had a smaller AUC(0.84) than arterial phase+delayed phase(0.85), but the difference was insignificant(P=0.15). After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for s HCC.CONCLUSIONS: The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for s HCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.展开更多
BACKGROUND:During the past years,the number of liver transplantation has increased greatly,but the number of available organs has not increased. In view of the critical shortage of organs,the indications for living re...BACKGROUND:During the past years,the number of liver transplantation has increased greatly,but the number of available organs has not increased. In view of the critical shortage of organs,the indications for living related liver transplantation(LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT(MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT METHODS:MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors(2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection,while curved planar reformation was added in 5 patients. RESULTS:We identified 10 important hepatic vascular variants in 9 of the 20 donors(4 arterial,4 venous,and 2 portal venous variants). In hepatic arterial variants two had a replaced right hepatic artery arising from the superior mesenteric artery,an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants,three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants,two had trifurcation of the main portal vein.CONCLUSIONS:As a non-invasive and reliable method,MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.展开更多
基金supported by grants from the National Natural Science Foundation of China(81301275,81471736 and 81671760)the National Science and Technology Pillar Program during the Twelfth Five-Year Plan Period(2015BAI01B09)Heilongjiang Province Foundation for Returness(LC2013C38)
文摘BACKGROUND: The various combination of multiphase enhancement multislice spiral CT(MSCT) makes the diagnosis of a small hepatocellular carcinoma(s HCC) on the background of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein(AFP) level could increase the diagnostic efficiency for s HCC.METHODS: This study included 35 s HCC patients and 52 cirrhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists employing a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic(ROC) curve analysis was performed to evaluate the diagnostic value of the three MSCT combination modes(arterial phase+portal-venous phase, arterial phase+delayed phase,arterial phase+portal-venous phase+delayed phase) and AFP levels for s HCC on the background of liver cirrhosis. RESULTS: The area under ROC curve(AUC), sensitivity,and specificity of the combination of arterial phase+portalvenous phase+delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase+portalvenous phase+delayed phase combination was significantly greater than that of the arterial phase+portal-venous phase(AUC=0.84, P=0.01) and arterial phase+delayed phase(AUC=0.85, P=0.03). Arterial phase+portal-venous phase had a smaller AUC(0.84) than arterial phase+delayed phase(0.85), but the difference was insignificant(P=0.15). After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for s HCC.CONCLUSIONS: The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for s HCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.
文摘BACKGROUND:During the past years,the number of liver transplantation has increased greatly,but the number of available organs has not increased. In view of the critical shortage of organs,the indications for living related liver transplantation(LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT(MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT METHODS:MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors(2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection,while curved planar reformation was added in 5 patients. RESULTS:We identified 10 important hepatic vascular variants in 9 of the 20 donors(4 arterial,4 venous,and 2 portal venous variants). In hepatic arterial variants two had a replaced right hepatic artery arising from the superior mesenteric artery,an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants,three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants,two had trifurcation of the main portal vein.CONCLUSIONS:As a non-invasive and reliable method,MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.
