Clinical application of controlled aliasing in parallel imaging results in a higher acceleration (CAIPIRINHA)‐volumetric interpolated breathhold (VIBE) sequence for gadoxetic acid‐enhanced liver MR imaging. Issue 5 (4th April 2013)

• Record Type: Journal Article
• Authors: Yu, Mi Hye; Lee, Jeong Min; Yoon, Jeong‐Hee; Kiefer, Berthold; Han, Joon Koo; Choi, Byung‐Ihn
• Is Part Of: Journal of magnetic resonance imaging. Volume 38:Issue 5(2013)
• Page Start: 1020
• Page End: 1026
• Publication Date: 2013-04-04
• Subjects: Magnetic resonance imaging -- Periodicals; 616
• DOI: 10.1002/jmri.24088
• Languages: English
• ISSNs: 1053-1807

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="jmri24088-sec-0001" sec-type="section"> <title>Purpose</title> <p>To determine whether a controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) technique can improve the image quality of three‐dimensional (3D), T1‐weighted gradient echo (T1w‐GRE) imaging compared with the use of a standard, parallel acquisition technique (PAT).</p> </sec> <sec id="jmri24088-sec-0002" sec-type="section"> <title>Materials and Methods</title> <p>Sixty‐four patients who underwent liver MR on a 3 Tesla (T) scanner, were included in this study. Twenty minutes after the injection of 0.025 mmole/kg of gadoxetic acid, 3D T1w‐GRE imaging (volumetric interpolated breathhold examination [VIBE]) was acquired twice using a generalized autocalibrating partially parallel acquisition (384 × 250 matrix, acceleration factor [AF] of 2) and a CAIPIRINHA (384 × 380 matrix, AF of 4), respectively. Qualitative image analysis was performed for two image sets.</p> </sec> <sec id="jmri24088-sec-0003" sec-type="section"> <title>Results</title> <p>CAIPIRINHA‐VIBE showed better hepatic vessel clarity and lesion conspicuity than standard VIBE (<italic>P</italic> < 0.05). CAIPIRINHA‐VIBE in the coronal plane also provided better results of motion artifact and liver edge sharpness than the standard VIBE (<italic>P</italic> < 0.05). Despite the more apparent PAT artifact on CAIPIRINHA‐VIBE than on standard VIBE (<italic>P</italic> < 0.05), CAIPIRINHA‐VIBE showed better overall image quality.</p> </sec> <sec id="jmri24088-sec-0004" sec-type="section"> <title>Conclusion</title> <p>The CAIPIRINHA‐VIBE was able to provide a higher spatial resolution, T1‐weighted imaging with better image quality compared with a standard VIBE. J. Magn. Reson. Imaging 2013;38:1020–1026. © 2013 Wiley Periodicals, Inc.</p> </sec> </abstract>