Human acellular dermal matrix is a useful and safe adjunct for correction of contour deformities after breast augmentation. Its high cost, however, may be a deterrent to widespread use in self-pay patients.
Mangafodipir trisodium-enhanced 3D MR cholangiography depicts intrahepatic biliary anatomy, especially right duct variants, more accurately than does conventional T2-weighted MR cholangiography.
Our objective was to investigate the coexistence of vascular and biliary anatomic variants, the latter of which are known to increase the risk of biliary complications in living liver donor transplantation. A total of 108 consecutive liver donor candidates were examined by magnetic resonance (MR) imaging that included 2 MR cholangiography methods, T2-weighted MR cholangiography and mangofodipir-enhanced T1-weighted three-dimensional (3D) MR cholangiography, as well as gadoliniumenhanced MR angiography and venography of the liver. Images were interpreted by at least 2 investigators in consensus for definition of hepatic arterial, portal venous, and biliary anatomy. A subset of 51 subjects underwent laparotomy for right hepatectomy. Of the 108 subjects examined, 50 (46%) demonstrated normal hepatic artery, portal vein, and biliary anatomy. Variants of the hepatic artery were found in 27 of 108 (25%) subjects, of the portal vein in 12 of 108 (11%) subjects, and of the bile ducts in 30 of 108 (28%) subjects. Of the 27 subjects with hepatic arterial variants, 8 (30%) also had variant biliary anatomy. The association between hepatic arterial variants and biliary variants was not statistically significant (P > .5). However, of the 12 subjects with portal vein variants, 7 (58%) had biliary variants, and in 6 of 7 cases, the right posterior hepatic duct was anomalous. By chisquare analysis, the association between portal venous and biliary variants was significant (P ؍ .012). In conclusion, over half of subjects with portal vein variants were found to have anomalous biliary anatomy, which always involved the hepatic ducts of the right lobe. The association between portal venous and biliary variants is statistically significant, while there is no significant association between hepatic arterial and biliary variants. (Liver
The fat fraction calculated with opposed-phase imaging (FF(OPI)) and that calculated with 1H MRS (FF(MRS)) correlated well with the known fat fractions of the phantoms (FF(P)): r = 0.99 for FF(OPI); p < 0.0001 and r = 0.96-0.98 for FF(MRS); p < 0.001, for observers 2 and 3, respectively. Opposed-phase imaging should be combined with 1H MRS to ensure accurate quantification of the fat fraction.
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