All Stories

  1. Ophthalmic Artery Feeders in Meningioma Reduce the Effectiveness of Transarterial Embolization With n-Butyl Cyanoacrylate

    Article • World Neurosurgery, February 2025, Elsevier

    Ryuichi Hirayama

  2. Automated volumetry of meningiomas in contrast-enhanced T1-Weighted MRI using deep learning

    Article • World Neurosurgery X, April 2024, Elsevier

    Ryuichi Hirayama

  3. Association of Plasma Claudin-5 with Age and Alzheimer Disease

    Article • International Journal of Molecular Sciences, January 2024, MDPI AG

    Ryuichi Hirayama

  4. Determination of brain tumor recurrence using 11 C‐methionine positron emission tomography after radiotherapy

    Article • Cancer Science, August 2021, Wiley

    Ryuichi Hirayama

  5. Safety and efficacy of an anti-claudin-5 monoclonal antibody to increase blood–brain barrier permeability for drug delivery to the brain in a non-human primate

    Article • Journal of Controlled Release, August 2021, Elsevier

    Ryuichi Hirayama

  6. The Impact of 5-Year Tumor Doubling Time to Predict the Subsequent Long-Term Natural History of Asymptomatic Meningiomas

    Article • World Neurosurgery, July 2021, Elsevier

    Ryuichi Hirayama

  7. Overview of the Premarketing and Postmarketing Requirements for Drugs Granted Japanese Conditional Marketing Approval

    Article • Clinical and Translational Science, April 2021, Wiley

    Ryuichi Hirayama

  8. A case of meningolacrimal artery aneurysm associated with meningioma

    Article • Surgical Neurology International, February 2021, Scientific Scholar

    Ryuichi Hirayama

  9. Impact of Inversion Time for FLAIR Acquisition on the T2-FLAIR Mismatch Detectability for IDH-Mutant, Non-CODEL Astrocytomas

    Article • Frontiers in Oncology, January 2021, Frontiers

    Ryuichi Hirayama

  10. The Roadmap to Approval under Japan’s Two-Track Regulatory System: Comparing Six Regenerative Medical Products

    Article • Cell Stem Cell, October 2020, Elsevier

    Ryuichi Hirayama

  11. Primary central nervous system lymphoma of the bilateral Bochdalek’s flower baskets: A case report

    Article • Interdisciplinary Neurosurgery, September 2020, Elsevier

    Ryuichi Hirayama

  12. Feasibility of Salvage Re-irradiation With Stereotactic Radiotherapy for Recurrent Glioma Using CyberKnife

    Article • Anticancer Research, June 2019, International Institute of Anticancer Research

    Ryuichi Hirayama

  13. Voxel-based lesion mapping of meningioma: a comprehensive lesion location mapping of 260 lesions

    Article • Journal of Neurosurgery, June 2018, Journal of Neurosurgery Publishing Group (JNSPG)

    Ryuichi Hirayama

  14. GC-16HYPERSENSITIVITY OF INTRACRANIAL GERMINOMAS FOR LOW-DOSE RADIATION: RELATIONSHIP BETWEEN DIAGNOSTIC RADIATION DOSE AND VOLUMETRIC CHANGES BEFORE CHEMORADIOTHERAPY

    Article • Neuro-Oncology, June 2016, Oxford University Press (OUP)

    Ryuichi Hirayama

  15. HG-86IMMUNOTHERAPY OF WILMS TUMOR 1 PEPTIDE VACCINATION AGAINST RECURRENT GLIOBLASTOMA AND DIFFUSE INTRINSIC PONTINE GLIOMA IN CHILDREN

    Article • Neuro-Oncology, June 2016, Oxford University Press (OUP)

    Ryuichi Hirayama

  16. Different spatial distributions of brain metastases from lung cancer by histological subtype and mutation status of epidermal growth factor receptor

    Article • Neuro-Oncology, October 2015, Oxford University Press (OUP)

    Ryuichi Hirayama

  17. Clinical and radiological features of endodermal cyst in the oculomotor nerve: A case report

    Article • British Journal of Neurosurgery, September 2014, Informa Healthcare

    Ryuichi Hirayama

  18. Different spatial distributions of brain metastases from lung cancer

    Article • Journal of Neurosurgery, May 2013, Journal of Neurosurgery Publishing Group (JNSPG)

    Ryuichi Hirayama, Dr Naoki Kagawa

  19. Clinical characteristics of meningiomas assessed by 11C-methionine and 18F-fluorodeoxyglucose positron-emission tomography

    Article • Journal of Neuro-Oncology, November 2011, Springer Science + Business Media

    Ryuichi Hirayama

  20. A rare case of a simultaneously detected suprasellar and intramedullary spinal cord germinoma

    Article • Brain Tumor Pathology, October 2010, Springer Science + Business Media

    Ryuichi Hirayama