Variability of physiological brain perfusion in healthy subjects - A systematic review of modifiers. Considerations for multi-center ASL studies

Quantitative measurements of brain perfusion are influenced by perfusion-modifiers. Standardization of measurement conditions and correction for important modifiers is essential to improve accuracy and to facilitate the interpretation of perfusion-derived parameters. An extensive literature search w...

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Vydáno v:Journal of cerebral blood flow and metabolism Ročník 38; číslo 9; s. 1418
Hlavní autoři: Clement, Patricia, Mutsaerts, Henk-Jan, Václavů, Lena, Ghariq, Eidrees, Pizzini, Francesca B, Smits, Marion, Acou, Marjan, Jovicich, Jorge, Vanninen, Ritva, Kononen, Mervi, Wiest, Roland, Rostrup, Egill, Bastos-Leite, António J, Larsson, Elna-Marie, Achten, Eric
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 01.09.2018
Témata:
Brain - blood supply
Cerebrovascular Circulation - physiology
Humans
Magnetic Resonance Imaging - methods
Magnetic Resonance Imaging - standards
Multicenter Studies as Topic
Perfusion Imaging - methods
Perfusion Imaging - standards
physiology
cerebral perfusion
deep MRI physiotyping
variability
Arterial spin labeling
ISSN:1559-7016, 1559-7016
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Shrnutí:Quantitative measurements of brain perfusion are influenced by perfusion-modifiers. Standardization of measurement conditions and correction for important modifiers is essential to improve accuracy and to facilitate the interpretation of perfusion-derived parameters. An extensive literature search was carried out for factors influencing quantitative measurements of perfusion in the human brain unrelated to medication use. A total of 58 perfusion modifiers were categorized into four groups. Several factors (e.g., caffeine, aging, and blood gases) were found to induce a considerable effect on brain perfusion that was consistent across different studies; for other factors, the modifying effect was found to be debatable, due to contradictory results or lack of evidence. Using the results of this review, we propose a standard operating procedure, based on practices already implemented in several research centers. Also, a theory of 'deep MRI physiotyping' is inferred from the combined knowledge of factors influencing brain perfusion as a strategy to reduce variance by taking both personal information and the presence or absence of perfusion modifiers into account. We hypothesize that this will allow to personalize the concept of normality, as well as to reach more rigorous and earlier diagnoses of brain disorders.
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ISSN:1559-7016
1559-7016
DOI:10.1177/0271678X17702156