• J Comput Assist Tomogr · Jan 2001

    Comparative Study

    Fast breath-hold T2-weighted MRI of the kidney by means of half-Fourier single-shot turbo spin echo: comparison with high resolution turbo spin echo sequence.

    • Y Nakayama, Y Yamashita, Y Matsuno, Y Tang, T Namimoto, M Kadota, K Mitsuzaki, Y Abe, K Katahira, A Arakawa, and M Takahashi.
    • Department of Radiology, Kumamoto University School of Medicine, Japan. yosiharu@dd.iij4u.or.jp
    • J Comput Assist Tomogr. 2001 Jan 1; 25 (1): 55-60.

    PurposeThe value of the fast half-Fourier single-shot turbo spin echo (HASTE) sequence in T2-weighted MRI of the kidney was evaluated as a substitute for the conventional turbo spin echo (TSE) sequence.MethodForty-five patients with suspected abnormalities of the kidney underwent MRI with a 1.5 T system. Breath-hold HASTE and respiratory-triggered TSE sequences were performed. Qualitative and quantitative analyses were performed for comparison of these sequences.ResultsThe signal-to-noise ratio (SNR) with HASTE was higher than that with TSE. The lesion-to-kidney contrast-to-noise ratio for solid masses with HASTE was almost equal to that with TSE. For cystic masses, the CNR with HASTE was significantly higher than that with TSE (p < 0.05). Respiratory and chemical shift artifacts were significantly smaller on HASTE than on TSE (p < 0.01). However, the blurring artifact was higher on HASTE than on TSE (p = 0.01).ConclusionThe HASTE sequence generates high contrast images and is free of motion and chemical shift artifacts, with much better time efficacy. The sequence provides comparable diagnostic information to TSE sequences.

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