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Incidence of pulmonary hypertension and its clinical relevance in patients with sarcoidosis.
OBJECTIVE To investigate the frequency of pulmonary hypertension (PH) and clinical parameters associated with PH in sarcoidosis patients. METHODS A prospective, observational study was performed on… Expand
Aquaporin 4 correlates with apparent diffusion coefficient and hydrocephalus severity in the rat brain: A combined MRI–histological study
We found an up-regulation of periventricular AQP4 in hydrocephalic rats that was strongly correlated with both CSF volume (Pearson=0.87, p<0.00001) and perventricular ADC. Expand
Diffusion tensor fiber tractography of the optic radiation: analysis with 6-, 12-, 40-, and 81-directional motion-probing gradients, a preliminary study.
BACKGROUND AND PURPOSE Knowing the exact location of the optic radiation preoperatively is important for surgery of the temporal lobe. We hypothesized that a greater number of motion-probing… Expand
Early Experience with 3-T Magnetic Resonance Tractography in the Surgery of Cerebral Arteriovenous Malformations in and around the Visual Pathway
OBJECTIVE: To evaluate of the role of magnetic resonance (MR) tractography on the optic radiation with a 3-T MR unit in the surgery of cerebral arteriovenous malformation (AVM) in and around the… Expand
MP2RAGE for deep gray matter measurement of the brain: A comparative study with MPRAGE
- G. Okubo, Tomohisa Okada, +5 authors K. Togashi
- Mathematics, Medicine
- Journal of magnetic resonance imaging : JMRI
- 1 January 2016
To compare magnetization‐prepared two rapid acquisition gradient echoes (MP2RAGE) imaging with conventional MPRAGE imaging for deep gray matter (GM) segmentation, reproducibility, contrast ratio (CR)… Expand
Diffusion-tensor fiber tractography: intraindividual comparison of 3.0-T and 1.5-T MR imaging.
PURPOSE To prospectively evaluate the depiction of brain fiber tracts at 3.0- versus 1.5-T diffusion-tensor (DT) fiber tractography performed with parallel imaging. MATERIALS AND METHODS… Expand
Fractional anisotropy and mean diffusivity: comparison between 3.0‐T and 1.5‐T diffusion tensor imaging with parallel imaging using histogram and region of interest analysis
We performed a comparison study focusing on differences in fractional anisotropy (FA) and mean diffusivity (MD) between 3‐T and 1.5‐T diffusion tensor imaging (DTI) with parallel imaging. Thirty… Expand
Diffusion Tensor Fiber Tractography for Arteriovenous Malformations: Quantitative Analyses to Evaluate the Corticospinal Tract and Optic Radiation
BACKGROUND AND PURPOSE: We hypothesized that diffusion tensor fiber tractography would be affected by intracranial arteriovenous malformation (AVM). The purpose of the present study was to evaluate… Expand
A Developmental Venous Anomaly Presenting Atypical Findings on Susceptibility-Weighted Imaging
- Y. Fushimi, Y. Miki, K. Togashi, K. Kikuta, N. Hashimoto, H. Fukuyama
- American Journal of Neuroradiology
- 1 August 2008
Developmental venous anomaly (DVA) is the most common type of vascular malformation found at autopsy, with a prevalence of 2%. DVA is composed of radially arranged venous complexes converging… Expand
Signal Changes in the Brain on Susceptibility‐Weighted Imaging Under Reduced Cerebral Blood Flow: A Preliminary Study
- Y. Fushimi, Y. Miki, +4 authors K. Togashi
- Journal of neuroimaging : official journal of the…
- 10 February 2009
To reveal the characteristics of susceptibility‐weighted imaging (SWI) under low cerebral blood flow (CBF) induced by hyperventilation (HV).