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Variable Refocusing Flip Angle Single-Shot Imaging for Sedation-Free Fast Brain MRI. AJNR. American journal of neuroradiology Jabarkheel, R. n., Tong, E. n., Lee, E. H., Cullen, T. M., Yousaf, U. n., Loening, A. M., Taviani, V. n., Iv, M. n., Grant, G. A., Holdsworth, S. J., Vasanawala, S. S., Yeom, K. W. 2020

Abstract

Conventional single-shot FSE commonly used for fast MRI may be suboptimal for brain evaluation due to poor image contrast, SNR, or image blurring. We investigated the clinical performance of variable refocusing flip angle single-shot FSE, a variation of single-shot FSE with lower radiofrequency energy deposition and potentially faster acquisition time, as an alternative approach to fast brain MR imaging.We retrospectively compared half-Fourier single-shot FSE with half- and full-Fourier variable refocusing flip angle single-shot FSE in 30 children. Three readers reviewed images for motion artifacts, image sharpness at the brain-fluid interface, and image sharpness/tissue contrast at gray-white differentiation on a modified 5-point Likert scale. Two readers also evaluated full-Fourier variable refocusing flip angle single-shot FSE against T2-FSE for brain lesion detectability in 38 children.Variable refocusing flip angle single-shot FSE sequences showed more motion artifacts (P?

View details for DOI 10.3174/ajnr.A6616

View details for PubMedID 32586967