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01-04-2010 | Diagnostic Neuroradiology

Magnetic resonance plaque imaging to predict the occurrence of the slow-flow phenomenon in carotid artery stenting procedures

Authors: Masahiko Sakamoto, Toshiaki Taoka, Hiroyuki Nakagawa, Katsutoshi Takayama, Takeshi Wada, Kaoru Myouchin, Toshiaki Akashi, Toshiteru Miyasaka, Akio Fukusumi, Satoru Iwasaki, Kimihiko Kichikawa

Published in: Neuroradiology | Issue 4/2010

Abstract

Introduction

The purpose is to investigate the feasibility of magnetic resonance (MR) plaque imaging in predicting the arterial flow impairment (slow-flow phenomenon) during carotid artery stenting (CAS) using a filter-type protection device.

Methods

Thirty-one carotid artery stenotic lesions in 30 patients (28 men and two women; mean age, 71.8 years) were evaluated by MR plaque imaging with black blood T1- and T2-weighted and time-of-flight sequences before CAS. Main plaque components were classified as vulnerable (intraplaque hemorrhage and lipid-rich/necrotic core) or stable (fibrous tissue and dense calcification) from the signal pattern. The plaque classification was statistically compared with the occurrence of slow-flow phenomenon.

Results

The slow-flow phenomenon was observed in ten CAS procedures (five flow arrests and five flow reductions). Flow arrests consisted of four vulnerable and one stable plaque, and flow reductions consisted of four vulnerable and one stable plaque. The slow-flow phenomenon occurred significantly (P < 0.01) more frequently in patients with vulnerable plaque.

Conclusions

Vulnerable carotid plaques have a significantly higher risk of slow-flow phenomenon than stable plaques. The occurrence of the slow-flow phenomenon can be predicted by MR plaque imaging before CAS.

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Title: Magnetic resonance plaque imaging to predict the occurrence of the slow-flow phenomenon in carotid artery stenting procedures
Authors: Masahiko Sakamoto
Toshiaki Taoka
Hiroyuki Nakagawa
Katsutoshi Takayama
Takeshi Wada
Kaoru Myouchin
Toshiaki Akashi
Toshiteru Miyasaka
Akio Fukusumi
Satoru Iwasaki
Kimihiko Kichikawa
Publication date: 01-04-2010
Publisher: Springer-Verlag
Published in: Neuroradiology / Issue 4/2010
Print ISSN: 0028-3940
Electronic ISSN: 1432-1920
DOI: https://doi.org/10.1007/s00234-009-0623-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Magnetic resonance plaque imaging to predict the occurrence of the slow-flow phenomenon in carotid artery stenting procedures

Abstract

Introduction

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Introduction

Methods

Results

Conclusions

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