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Leoni RF, Mazzetto-Betti KC, Silva AC, et al. Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques. Radiol Res Pract. 2012;2012:268483doi: 10.1155/2012/268483.
Leoni, R. F., Mazzetto-Betti, K. C., Silva, A. C., Dos Santos, A. C., de Araujo, D. B., Leite, J. P., & Pontes-Neto, O. M. (2012). Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques. Radiology research and practice, 2012268483. https://doi.org/10.1155/2012/268483
Leoni, Renata F, et al. "Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques." Radiology research and practice vol. 2012 (2012): 268483. doi: https://doi.org/10.1155/2012/268483
Leoni RF, Mazzetto-Betti KC, Silva AC, Dos Santos AC, de Araujo DB, Leite JP, Pontes-Neto OM. Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques. Radiol Res Pract. 2012;2012:268483. doi: 10.1155/2012/268483. Epub 2012 Jun 20. PMID: 22919485; PMCID: PMC3388310.
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Radiol Res Pract. 2012;2012:268483. doi: 10.1155/2012/268483. Epub 2012 Jun 20.

Assessing Cerebrovascular Reactivity in Carotid Steno-Occlusive Disease Using MRI BOLD and ASL Techniques.

Radiology research and practice

Renata F Leoni, Kelley C Mazzetto-Betti, Afonso C Silva, Antonio C Dos Santos, Draulio B de Araujo, João P Leite, Octavio M Pontes-Neto

Affiliations

  1. Department of Neuroscience and Behavioral Sciences, FMRP, University of Sao Paulo, Ribeirao Preto, SP 14049-900, Brazil.

PMID: 22919485 PMCID: PMC3388310 DOI: 10.1155/2012/268483

Abstract

Impaired cerebrovascular reactivity (CVR), a predictive factor of imminent stroke, has been shown to be associated with carotid steno-occlusive disease. Magnetic resonance imaging (MRI) techniques, such as blood oxygenation level-dependent (BOLD) and arterial spin labeling (ASL), have emerged as promising noninvasive tools to evaluate altered CVR with whole-brain coverage, when combined with a vasoactive stimulus, such as respiratory task or injection of acetazolamide. Under normal cerebrovascular conditions, CVR has been shown to be globally and homogenously distributed between hemispheres, but with differences among cerebral regions. Such differences can be explained by anatomical specificities and different biochemical mechanisms responsible for vascular regulation. In patients with carotid steno-occlusive disease, studies have shown that MRI techniques can detect impaired CVR in brain tissue supplied by the affected artery. Moreover, resulting CVR estimations have been well correlated to those obtained with more established techniques, indicating that BOLD and ASL are robust and reliable methods to assess CVR in patients with cerebrovascular diseases. Therefore, the present paper aims to review recent studies which use BOLD and ASL to evaluate CVR, in healthy individuals and in patients with carotid steno-occlusive disease, providing a source of information regarding the obtained results and the methodological difficulties.

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