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[Feasibility of Cerebrovascular Reserve Assessment Using Stretched Exponential Model in Major Cerebral Artery Steno-occlusive Disease: Comparison with SPECT].
Tani, Kazuki; Mio, Motohira; Toyofuku, Tatsuo; Maeda, Toshihiro; Inoue, Toshiro; Nakamura, Hironori.
Afiliación
  • Tani K; Department of Radiology, Fukuoka University Chikushi Hospital.
  • Mio M; Department of Radiology, Fukuoka University Chikushi Hospital.
  • Toyofuku T; Department of Radiology, Fukuoka University Chikushi Hospital.
  • Maeda T; Department of Radiology, Fukuoka University Chikushi Hospital.
  • Inoue T; Department of Radiology, Fukuoka University Chikushi Hospital.
  • Nakamura H; Department of Radiology, Fukuoka University Chikushi Hospital.
Nihon Hoshasen Gijutsu Gakkai Zasshi ; 78(8): 819-828, 2022 Aug 20.
Article en Ja | MEDLINE | ID: mdl-35753804
PURPOSE: To clarify whether diffusion-weighted imaging using stretched exponential model can assess cerebrovascular reserve (CVR) in patients with major cerebral artery steno-occlusive disease, we compared stretched exponential parameters and single-photon emission computed tomography (SPECT). METHODS: Twenty-nine patients with unilateral major cerebral artery steno-occlusive disease (25 men and 4 women; age, 69±11 years) were analyzed in this study. The patients were divided into three groups: normal CVR (CVR≥30%), moderate CVR (10%≤CVR<30%), and severe CVR (CVR<10%). The distributed diffusion coefficient (DDC) and heterogeneity index (α) from the stretched exponential model, apparent diffusion coefficient (ADC) from the monoexponential model, and CVR and resting cerebral blood flow (CBF) from SPECT were measured in the bilateral middle cerebral artery territories, and ipsilateral-to-contralateral ratios (rDDC, rα, rADC, and rCBF) were obtained. RESULTS: The rDDC values in severe CVR were significantly higher than those in normal CVR (P=0.003). The rDDC values were significantly negatively correlated with ipsilateral CVR (rho=-0.31, P=0.009). The rDDC values were not significantly correlated with rCBF (P=0.34). CONCLUSION: We have shown that elevated rDDC values are associated with impaired CVR. Our results suggest that diffusion-weighted imaging using stretched exponential model has a potential to evaluate hemodynamic impairment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tomografía Computarizada de Emisión de Fotón Único / Circulación Cerebrovascular Límite: Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: Ja Revista: Nihon Hoshasen Gijutsu Gakkai Zasshi Año: 2022 Tipo del documento: Article Pais de publicación: Japón
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Tomografía Computarizada de Emisión de Fotón Único / Circulación Cerebrovascular Límite: Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: Ja Revista: Nihon Hoshasen Gijutsu Gakkai Zasshi Año: 2022 Tipo del documento: Article Pais de publicación: Japón