MR perfusion imaging study of the hepatic hemodynamics in pigs
- VernacularTitle:MR灌注成像测量家猪肝脏血流动力学参数的研究
- Author:
Shenping YU
;
Yanling ZHANG
;
Li JIANG
;
Bitao PAN
;
Li HE
;
Jianyong YANG
;
Quanfei MENG
- Publication Type:Journal Article
- Keywords:
Magnetic resonance imaging;
Tomography,X-ray computed;
Liver
- From:
Chinese Journal of Radiology
2008;42(10):1080-1083
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the MR perfusion imaging in measuring the hemodynamics of liver.MethodsCT and MR perfusion imaging were performed in livers of 13 pigs.The hepatic artery perfusion(HAP),portal vein perfusion(PVP),total hepatic blood flow(THBF),portal vein perfusion index(PVI),distribution volume(DV)and mean transit time(MTT)were calculated and compared respectively.Hemodynamics of the liver from two kinds of imaging was compared by paked t-test,and the relativity was analyzed by Pearson correlation analysis.ResultsIn CT and MR perfusion imaging of the 13 pigs:the hepatic artery perfusion(HAP)were(37.7±7.38)and(35.80±7.31)ml-min-1·100ml-1.the portal vein perfusion(PVP)were(123.16 35.89)and(121.40±36.81)ml·min-1·100 ml-1.the total hepatic blood flow(THBF)were(160.88±37.05)and(157.21±38.71)ml·min-1·100 ml-1.the portal vein perfusion index(PVI)were(75.95±5.21)%and(76.63±5.24)%,the distilbution volume(DV)were(35.10±11.17)%and(41.03±10.06)%。The mean transit time(MTT)were(14.08±1.40)and(14.94±1.32)s.There were no statistical differences for HAP,PVP,THBF and PVI between CT and MR perfusion imaging(t=1.263,0.926,1.225,-1.115,P＞0.05).There were no statistical differences for DV and MTT(t=-3.345,-3.200,P＜0.01).Analysis of these two kinds of imaging showed the correlation coefficient of PVP,THBF and PVI were hishly related(r＞0.85,P＜0.01).Correlation coefficient of HAP,DV and M1T were moderately related(r＞0.70,P＜0.01).ConclusionsMR perfusion Call quantify the blood flow parameters of liver accurately.It is close to that of the CT perfusion imaging.
