Abstract #2737

The optimization of single-shot FLAIR for motion artifact reduction and scan time reduction in stroke imaging: A Comparative Analysis with Conventional FLAIR

Yoshihiro Kubota¹, Hajime Yokota¹, Takayuki Sakai^2,3, Masami Yoneyama⁴, Hiroki Mukai¹, Takuro Horikoshi¹, and Takashi Uno⁵

¹Radiology, Chiba university hospital, Chiba city, Japan, ²Radiology, Eastern Chiba Medical Center, Togane city, Japan, ³Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa university, Kanazawa, Japan, ⁴Philips Japan, Tokyo, Japan, ⁵Department of Diagnostic Radiology and Radiation Oncology, Chiba University Graduate School of Medicine, Chiba city, Japan

For stroke imaging, motion correction and scan time reduction are essential. We optimized the single-shot FLAIR sequence and implemented it into our stroke MR protocol. 48 patients suspected of stroke were retrospectively involved, and board-certified radiologists evaluated the images of our modified-single-shot FLAIR and conventional FLAIR at the terms of degree of motion artifact, image quality, delineation of hyperintense vessel and contribution for diagnosis. Motion artifact was significantly reduced (P < 0.001) and scan time was decreased by 40% in single-shot FLAIR. Hyperintense vessels were equally detected in both the sequences. Radiologists considered modified-single-shot FLAIR more useful for diagnosis.

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