Y. Ushio

Publications581
h-index60
Citations15,106
Highly Influential Citations421
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Prognostic value of epidermal growth factor receptor in patients with glioblastoma multiforme.
Glioblastoma multiforme (GBM) frequently involves amplification and alteration of the epidermal growth factor receptor (EGFR) gene, resulting in overexpression of varied mutations, including the most… Expand
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Usefulness of diffusion‐weighted MRI with echo‐planar technique in the evaluation of cellularity in gliomas
The purpose of this study was to evaluate the utility of diffusion‐weighted magnetic resonance imaging (MRI) with echo‐planar imaging (EPI) technique in depicting the tumor cellularity and grading of… Expand
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Correlation of MR imaging-determined cerebral blood volume maps with histologic and angiographic determination of vascularity of gliomas.
OBJECTIVE Our purpose was to evaluate the relationships between the ratio of maximum relative cerebral blood volume (rCBV) (rCBV ratio = rCBV[tumor]/rCBV[contralateral white matter]) and histologic… Expand
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Posttherapeutic intraaxial brain tumor: the value of perfusion-sensitive contrast-enhanced MR imaging for differentiating tumor recurrence from nonneoplastic contrast-enhancing tissue.
BACKGROUND AND PURPOSE Differentiation of tumor recurrence from treatment-related changes may be difficult with conventional MR imaging when newly enhancing lesions appear. Our aim was to determine… Expand
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Activation of Akt/Protein Kinase B Contributes to Induction of Ischemic Tolerance in the CA1 Subfield of Gerbil Hippocampus
Apoptosis plays an important role in delayed neuronal cell death after cerebral ischemia. Activation of Akt/protein kinase B has been recently reported to prevent apoptosis in several cell types. In… Expand
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Perfusion-sensitive MR imaging of gliomas: comparison between gradient-echo and spin-echo echo-planar imaging techniques.
BACKGROUND AND PURPOSE The different sensitivities to vessel size of gradient-echo echo-planar imaging (GE-EPI) and spin-echo EPI (SE-EPI) might indicate the relative cerebral blood volumes (rCBVs)… Expand
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Activation of Mitogen‐Activated Protein Kinase in Cultured Rat Hippocampal Neurons by Stimulation of Glutamate Receptors
Abstract: Mitogen‐activated protein kinase (MAP kinase) was activated by stimulation of glutamate receptors in cultured rat hippocampal neurons. Ten micromolar glutamate maximally stimulated MAP… Expand
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MR of epidermoids with a variety of pulse sequences.
PURPOSE To assess the usefulness of fluid-attenuated inversion recovery (FLAIR) and constructive interference in steady state (CISS) sequences in depicting epidermoid tumors. METHODS Six patients… Expand
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MRI of intracranial germ-cell tumours
Our aim was to review the MRI appearances of primary intracranial germ-cell tumours (GCT). We reviewed the MRI studies of 32 patients: 19 with germinomas, five with teratomas, one with an embryonal… Expand
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Chemotherapy of brain metastases from lung carcinoma: a controlled randomized study.
A controlled randomized study was carried out to evaluate the effects of chemotherapy in patients with brain metastases from lung carcinoma. One hundred patients were randomly divided into three… Expand
  • 104
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