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Abstract #4117

Relationship between the position of the plaque signal intensity identified by 3D-FSE T1W MR plaque imaging and development of microembolic signals on transcranial Doppler during exposure procedure of carotid arteries in endarterectomy

Yasushi Ogasawara1, Kuniaki Ogasawara1, Yuiko Sato1, Shinsuke Narumi2, Makoto Sasaki3, Masakazu Kobayashi1, Shunrou Fujiwara1, Kenji Yoshida1, Yasuo Terayama2, and Akira Ogawa1

1Department of Neurosurgery, Iwate Medical University, Morioka, Japan, 2Department of Neurology and Gerontology, Iwate Medical University, Morioka, Japan, 3Institute for Biomedical Sciences, Iwate Medical University, Morioka, Japan

Preoperative 2D MR carotid plaque imaging can assess plaque vulnerability. It may allow improved risk stratification for patients considered for CEA and may be associated with development of MES during CEA. On the other hand, it is unclear what position of high signal intensity in the plaque, especially at the position showing maximum stenosis or maximum signal intensity, is deeply associated with MES, and it is difficult to validate it by the 2D plaque imaging. The aim of the present study was to determine where in the plaque is deeply associated with development of MES on TCD during CEA in carotid artery stenosis, using 3D-FSE T1W plaque imaging.

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