1. Prospective intraindividual comparison between respiratory-triggered balanced steady-state free precession and breath-hold gradient-echo and time-of-flight magnetic resonance imaging for assessment of portal and hepatic veins.
- Author
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Willmann, Jürgen K., Göpfert, Kerstin, Lutz, Amelie M., Nanz, Daniel, McCormack, Lucas, Petrowsky, Henrik, Seifert, Burkhardt, Hervo, Patrice, Marincek, Borut, Weishaupt, Dominik, Willmann, Jürgen K, and Göpfert, Kerstin
- Subjects
LIVER disease diagnosis ,DIAGNOSIS ,MAGNETIC resonance imaging ,TOMOGRAPHY ,LIVER surgery ,COMPARATIVE studies ,LONGITUDINAL method ,RESEARCH methodology ,MEDICAL cooperation ,PORTAL vein ,RESEARCH ,RESPIRATION ,EVALUATION research ,HEPATIC veins - Abstract
The purpose of this study was to compare respiratory-triggered balanced steady-state free precession (bSSFP) with breath-hold contrast-enhanced dynamic two-dimensional (2D) gradient-echo (GRE) and time-of-flight (TOF) magnetic resonance imaging (MRI) for portal and hepatic vein visualization and assessment of portal and hepatic venous variants. Sixty patients with liver disease underwent nonenhanced bSSFP and contrast-enhanced GRE, bSSFP, and TOF imaging. Contrast-to-noise ratios (CNRs) for portal and hepatic veins were measured. Two readers rated the quality of portal and hepatic vein visualization on a 5-point Likert scale. The diagnostic performance of each MRI series in the detection of portal and hepatic venous variants was assessed in 40/60 patients who also underwent contrast-enhanced multidetector-row computed tomography (MDCT). CNRs for portal and hepatic veins were highest on contrast-enhanced bSSFP images. Image quality of portal and hepatic veins was rated higher for nonenhanced bSSFP than for contrast-enhanced GRE (p<0.03) and TOF (p<0.003) and higher for contrast-enhanced than for nonenhanced bSSFP (p<0.003). Compared with MDCT, portal and hepatic venous variants were identified with an accuracy of 99% on bSSFP images, with an excellent interobserver agreement (kappa=0.97). Compared with MDCT, presence of surgically important portal and hepatic venous anatomical variants can be predicted with high accuracy on bSSFP images. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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