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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 Sakai2,3, 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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