MR vessel-encoded arterial spin labeling with the placement of metallic items to visualize the territorial blood flow after extracranial-intracranial bypass surgery : a proof-of-concept study

Hayashi, Tetsuji; Fujima, Noriyuki; Harada, Taisuke; Hamaguchi, Akiyoshi; Kodera, Shuichi

MR vessel-encoded arterial spin labeling with the placement of metallic items to visualize the territorial blood flow after extracranial-intracranial bypass surgery : a proof-of-concept study

Hayashi, Tetsuji; Fujima, Noriyuki; Harada, Taisuke et al.

Acta radiologica, 2023, 64(5), 2004-2009

Permalink : https://hdl.handle.net/2115/89176

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アクセス権	open access
URI	https://hdl.handle.net/2115/89176
タイトル	MR vessel-encoded arterial spin labeling with the placement of metallic items to visualize the territorial blood flow after extracranial-intracranial bypass surgery : a proof-of-concept study
著者	Hayashi, Tetsuji ; Fujima, Noriyuki ; Harada, Taisuke ; Hamaguchi, Akiyoshi ; Kodera, Shuichi
著者名 Hayashi, Tetsuji
e-Rad_Researcher 80431360 著者名 Fujima, Noriyuki
著者名 Harada, Taisuke
著者名 Hamaguchi, Akiyoshi
著者名 Kodera, Shuichi
言語	英語
キーワード	Central nervous system
	magnetic resonance diffusion
	perfusion
	imaging sequences
発行日	2023-05-01
出版者	SAGE Publications
収録物名	Acta radiologica
巻(号)	64(5)
ページ	2004-2009
抄録	Background Depiction of bypass blood flow in patients who received extracranial-intracranial (EC-IC) bypass surgery is important for patient care. Purpose To develop a vessel-encoded arterial spin labeling (VE-ASL) method using surgical staples as a magnetic resonance (MR)-conditional product in patients who received EC-IC bypass surgery. Material and Methods Pseudo-continuous labeling was used for VE-ASL acquisition with a 3-T MR unit. First, an experimental study was conducted to determine the appropriate number of surgical staples to obtain a spatially sufficient saturation effect. Thereafter, four healthy normal volunteers underwent a VE-ASL study to confirm the sufficiency of the saturation effect to the right or left common carotid artery. Finally, VE-ASL scanning was performed in seven patients after EC-IC bypass surgery to confirm the ability of VE-ASL to visualize the territorial bypass perfusion. All qualitative evaluation was performed by two neuroradiologists using a 3-point grading system (2 = good, 1 = moderate, 0 = poor). Results A quantity of 200 staples was found to be appropriate for VE-ASL scanning. In healthy volunteers, one neuroradiologist rated the images of all four cases as good, while the other rated three cases as good and one case as moderate. For the seven patients after EC-IC bypass surgery, one neuroradiologist rated all seven cases as good, and the other rated six cases as good and one case as moderate. Conclusion VE-ASL using surgical staples might be useful for the evaluation of territorial bypass perfusion in patients after EC-IC bypass surgery.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Hayashi T, Fujima N, Harada T, Hamaguchi A, Kodera S. MR vessel-encoded arterial spin labeling with the placement of metallic items to visualize the territorial blood flow after extracranial–intracranial bypass surgery: a proof-of-concept study. Acta Radiologica. 2023;64(5):2004-2009. Copyright © 2023. DOI:10.1177/02841851221151144
PISSN	0284-1851
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1177/02841851221151144