Title: Improved focal liver lesion detection: comparison of single shot diffusion-weighted echo planar and single shot T2w turbo spin echo techniques
Authors: Coenegrachts, Kenneth ×
Delanote, Joost
ter Beek, Leon
Haspeslagh, Marc
Bipat, Sjandra
Stoker, Jaap
Van Kerkhove, F
Steyaert, Luc
Rigauts, Hans
Casselman, Jan #
Issue Date: 17-May-2007
Publisher: British Institute of Radiology
Series Title: British Journal of Radiology vol:2007 issue:80 pages:524-531
Abstract: The purpose of this study was to compare diffusion-weighted respiratory-triggered single-shot spin echo echoplanar imaging (SS SE-EPI) sequence using four b-values (b = 0, b = 20, b = 300, b = 800 s mm(-2)) and single-shot T2 weighted turbo spin echo (T2W SS TSE) in patients with focal liver lesions, with special interest in small (<10 mm) lesions. Twenty-four patients underwent routine MRI. The five sequences were compared qualitatively for image quality, lesion conspicuity and artefacts. Quantitative analysis was performed for lesion identification and lesion-to-liver contrast-to-noise ratio (CNR). Subgroup analyses were performed for different types of lesions with different sizes. Sequences were compared by rank order statistic (RIDIT) and Kruskal-Wallis test. The best image quality (p<0.05) was achieved with T2W TSE and the best lesion conspicuity (p<0.05) with T2W TSE for biliary cysts and SE-EPI diffusion-weighted imaging (DWI) (b = 20 s mm(-2)) for haemangiomas and metastases. Image artefacts were lowest (p<0.05) with T2W TSE. T2W TSE was found to be the best protocol (p<0.05) for the identification of biliary cysts and SE-EPI DWI (b = 20 s mm(-2)) for haemangiomas and metastases. The lesion-to-liver CNRs were highest on T2W TSE for biliary cysts and on SE-EPI diffusion-weighted imaging (DWI) for haemangiomas and metastases (p<0.05). This study shows the potential of SS SE-EPI DWI (especially with a b-value of 20 s mm(-2)) as a promising technique for detecting small (<10 mm) focal liver lesions.
ISSN: 0007-1285
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Faculty of Medicine - miscellaneous
× corresponding author
# (joint) last author

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