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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 22:1798-1802 (October 2001)
© 2001 American Society of Neuroradiology

ARTICLE

Fast Three-Point Dixon MR Imaging of the Retrobulbar Space with Low-Resolution Images for Phase Correction: Comparison with Fast Spin-Echo Inversion Recovery Imaging

Frank J. Rybicki^a, Robert V. Mulkern^a, Richard L. Robertson^a, Caroline D. Robson^a, Taylor Chung^a and Jingfei Ma^a

^a From the Department of Radiology (F.J.R.), Brigham and Women's Hospital and Harvard Medical School, Boston, Mass; Department of Radiology (F.J.R., R.V.M., R.L.R., C.D.R.), Children's Hospital and Harvard Medical School, Boston, Mass; Department of Diagnostic Imaging (T.C.), Texas Children's Hospital, Houston; and Department of Diagnostic Radiology (J.M.), Anderson Cancer Center, Houston, TX.

Summary: A new phase-correction algorithm for three-point Dixon (3PD) MR imaging allows on-line image reconstruction of three images per section: pure water, pure fat, and water plus fat. When combined with fast spin-echo acquisition, the sequence is suitable for routine MR imaging of the retrobulbar space. The 3PD pure water images have double the image signal-to-noise ratio of fast spin-echo inversion recovery images. The dramatic contrast-to-noise ratio of the 3PD pure fat images may offer improved lesion detection.

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