scholarly journals Balanced steady-state free precession vs. segmented fast low-angle shot for the evaluation of ventricular volumes, mass, and function at 3 Tesla

2007 ◽  
Vol 26 (2) ◽  
pp. 392-400 ◽  
Author(s):  
Frank Grothues ◽  
Hagen Boenigk ◽  
Joachim Graessner ◽  
Martin Kanowski ◽  
Helmut U. Klein
Keyword(s):  
Steady State ◽  
Steady State Free Precession ◽  
3 Tesla ◽  
Free Precession ◽  
Ventricular Volumes ◽  
And Function

scholarly journals Non-contrast-enhanced hepatic MR arteriography with balanced steady-state free-precession and time spatial labeling inversion pulse: optimization of the inversion time at 3 Tesla

2015 ◽  
Vol 4 (12) ◽  
pp. 205846011561642 ◽  
Author(s):  
Seiya Kawahara ◽  
Hiroyoshi Isoda ◽  
Tsuyoshi Ohno ◽  
Akihiro Furuta ◽  
Kaori Togashi
Keyword(s):  
Steady State ◽  
Hepatic Artery ◽  
Steady State Free Precession ◽  
3 Tesla ◽  
Surrounding Tissue ◽  
Inversion Pulse ◽  
Free Precession ◽  
Hepatic Arteries ◽  
Inversion Time ◽  
Contrast Enhanced

Background A 3 Tesla (3 T) magnetic resonance (MR) scanner is a promising tool for upper abdominal angiography. However, no report has focused on the contrast behavior of non-contrast-enhanced hepatic MR arteriography at 3 T. Purpose To establish the optimal inversion time (TI) for favorable selective visualization of the hepatic arteries on non-contrast-enhanced MR arteriography with time spatial labeling inversion pulse (Time-SLIP) at 3 T. Material and Methods Twenty-five healthy volunteers were examined using respiratory-triggered three-dimensional balanced steady-state free-precession combined with Time-SLIP. According to the difference in the TI, five image groups (A, B, C, D, and E, from 1200 to 2000 ms, increasing at 200-ms intervals) were performed and compared to detect the optimal TI for hepatic artery visualization. The relative Cv-l (vessel-to-liver contrast) was quantified. For qualitative evaluation, the vessel visualization quality and order of the depicted hepatic artery branches were evaluated. Results In group C (TI of 1600 ms), the Cv-l showed the highest probably due to a favorable balance between the hepatic vessel signal and signal recovery of the surrounding tissue. Regarding qualitative assessment, in group C, the mean image quality score of all hepatic arteries and mean maximal visible order of the hepatic artery branches were the highest. However, there was no significant difference between these results. Conclusion Non-contrast-enhanced hepatic MR arteriography with Time-SLIP at 3 T enabled the selective visualization of hepatic arteries at a TI of 1600 ms with an optimal balance between Cv-l and peripheral hepatic artery visualization.

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