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Hepatic MR imaging: comparison of 2D and 3D gradient echo techniques

Authors
 M.-J. Kim ; D. G. Mitchell ; P. N. Kim ; K. Ito 
Citation
 Abdominal Imaging, Vol.26(3) : 269~276, 2001 
Journal Title
 Abdominal Imaging 
ISSN
 0942-8925 
Issue Date
2001
Abstract
BACKGROUND: To compare fat-suppressed three-dimensional gradient echo (3D-GRE) and two-dimensional gradient echo (2D-GRE) techniques for hepatic magnetic resonance imaging. METHODS: For 107 patients with suspected focal hepatic lesions, unenhanced 2D-GRE multislice in-phase and opposed-phase images and 3D-GRE images were obtained. Two radiologists independently and in random order reviewed the images. Quantitative analysis compared contrast-to-noise ratio (C/N) of liver masses and of the liver to spleen and signal-to-noise ratio (S/N) of the liver. Subjective grading of lesion conspicuity, confidence for lesion detection, artifacts, and overall image quality were also evaluated. RESULTS: Conspicuity and confidence for focal lesions was statistically significantly higher on 3D-GRE than on 2D-GRE images. Liver-to-spleen C/N was higher on 3D-GRE images than on in-phase and opposed-phase 2D-GRE images (p < 0.01). Liver S/N was higher on in-phase 2D-GRE images than on 3D-GRE and opposed-phase 2D-GRE images (p < 0.001). Lesion-to-liver C/N was higher on 3D-GRE images than on 2D-GRE images for nonsolid lesions (p < 0.05), but there was no significant difference for solid lesions. Motion and pulsation artifacts were significantly fewer on 3D-GRE images, but graininess and shading were significantly higher. Overall image quality was not significantly different for the three sequences. CONCLUSION: Fat-suppressed 3D-GRE sequences can afford comparable or better image quality than 2D-GRE images and may have the potential to detect more focal hepatic lesions.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/142684
DOI
10.1107/s002610000177
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
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Link
 http://link.springer.com/article/10.1107/s002610000177
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