• G Jung, T Krahe, H Kugel, J Gieseke, C Walter, R Fischbach, and P Landwehr.
• Institut und Poliklinik für Radiologische Diagnostik der Universität zu Köln.
• Rofo. 1996 Aug 1; 165 (2): 137-43.

PurposeTo evaluate the value of rapid T2-weighted turbo-spin sequences (TSE), turbo-spin-echo sequences with shortened echo spacing (UTSE), gradient-and-spin-echo sequences (GraSE) and T1-weighted echo-planar imaging (EPI) in comparison with conventional spin-echo sequences (SE) in the diagnosis of focal liver lesions.Methods20 patients with malignant focal liver lesions underwent magnetic resonance imaging at 1.0 tesla.ResultsThe use of fast T2-sequences (TSE, UTSE, GraSE) reduced the examination time to about 35-50%. Artifacts were reduced compared with the conventional T2-SE sequence. Quantitative analysis demonstrated that UTSE imaging had the highest tumor/liver contrast-to-noise ratio (CNR) followed by TSE, T2-SE and GraSE sequences. CNR with EPI was lower than with the T1-SE sequence (p < 0.05).ConclusionTurbo-spin-echo sequences with shortened echo spacing yield a shorter imaging time and improved image quality without loss of signal intensity in tumor/liver-CNR, compared with conventional T2-pulse sequences in liver imaging at 1.OT.

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