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Article

Differences in Hemodynamic Alteration between Atherosclerotic Occlusive Lesions and Moyamoya Disease: A Quantitative 15O-PET Study

1
Department of Neurosurgery, Faculty of Medical Sciences, University of Fukui, Eiheiji-cho 910-1193, Japan
2
Biomedical Imaging Research Center, University of Fukui, Eiheiji-cho 910-1193, Japan
3
Department of Biomedical Engineering, Khulna University of Engineering & Technology, Khulna 9203, Bangladesh
*
Author to whom correspondence should be addressed.
Academic Editor: Fabien Hyafil
Diagnostics 2021, 11(10), 1820; https://doi.org/10.3390/diagnostics11101820
Received: 7 September 2021 / Revised: 24 September 2021 / Accepted: 28 September 2021 / Published: 1 October 2021
(This article belongs to the Section Medical Imaging and Theranostics)
To clarify the differences in hemodynamic status between atherosclerotic steno-occlusive lesions (SOL) and moyamoaya disease (MMD), hemodynamic parameters were compared using 15O-PET. Twenty-four patients with unilateral SOL (67 ± 11 y) and eighteen with MMD (33 ± 16 y) were assigned to this study. MMD patients were divided into twelve unilateral and six bilateral lesions. All patients underwent 15O-PET to measure cerebral blood flow (CBF), blood volume (CBV), oxygen extraction fraction (OEF), and metabolic rate (CMRO2). Acetazolamide was administered after the baseline scan and the second 15O-water PET was performed to evaluate cerebrovascular reactivity (CVR). For the CBF calculation in 15O-water PET, the three-weighted integral method was applied based on a one-tissue compartment model with pixel-by-pixel delay correction to measure precise CBF and arterial-to-capillary blood volume (V0). Baseline hemodynamic parameters showed significantly lower CBF, V0, and CMRO2, but greater CBV, OEF, and delay (p < 0.01) in the affected hemispheres than in the unaffected hemispheres. After ACZ administration, both hemispheres showed a significant increase in CBF (p < 0.0001), but not in V0. CVR differed significantly between the hemispheres. The arterial perfusion pressure of the functioning arterial part tended to be reduced after acetazolamide administration in patients with past neurologic events caused by hemodynamic impairment. MMD patients showed greater inactive vascular and venous volumes compared with common atherosclerotic SOL patients. The hemodynamic status of cerebral circulation may vary according to the chronic process of steno-occlusive change and the development of collateral circulation. In order to evaluate physiologic differences between the two diseases, 15O-PET with an acetazolamide challenge test is useful. View Full-Text
Keywords: cerebral hemodynamics; 15O-PET; arterial steno-occlusive lesion; moyamoya disease; cerebral perfusion pressure cerebral hemodynamics; 15O-PET; arterial steno-occlusive lesion; moyamoya disease; cerebral perfusion pressure
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MDPI and ACS Style

Igarashi, C.; Okazawa, H.; Islam, M.M.; Tsujikawa, T.; Higashino, T.; Isozaki, M.; Kikuta, K.-i. Differences in Hemodynamic Alteration between Atherosclerotic Occlusive Lesions and Moyamoya Disease: A Quantitative 15O-PET Study. Diagnostics 2021, 11, 1820. https://doi.org/10.3390/diagnostics11101820

AMA Style

Igarashi C, Okazawa H, Islam MM, Tsujikawa T, Higashino T, Isozaki M, Kikuta K-i. Differences in Hemodynamic Alteration between Atherosclerotic Occlusive Lesions and Moyamoya Disease: A Quantitative 15O-PET Study. Diagnostics. 2021; 11(10):1820. https://doi.org/10.3390/diagnostics11101820

Chicago/Turabian Style

Igarashi, Chiaki, Hidehiko Okazawa, Muhammad M. Islam, Tetsuya Tsujikawa, Toshifumi Higashino, Makoto Isozaki, and Ken-ichiro Kikuta. 2021. "Differences in Hemodynamic Alteration between Atherosclerotic Occlusive Lesions and Moyamoya Disease: A Quantitative 15O-PET Study" Diagnostics 11, no. 10: 1820. https://doi.org/10.3390/diagnostics11101820

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