40 Result(s)

Article

Magnetic resonance imaging of acute intracerebral hematomas: In vivo and in vitro studies

The mechanisms causing unclear differentiation of ICH in the acute phase by MRI are discussed. The increase of the hemoglobin concentration in the hematoma, caused by loss of the plasma component directly afte...

Akira Matsumura, Tadao Nose, Takashi Yamada, Kazuhiro Homma in Neurosurgical Review (1987)

Article

Symptomatic subependymoma with nuclear polymorphism

Two patients with symptomatic subependymomas are described. Histologically prominent cellular polymorphism was revealed. The existence of subependymoma with unusually marked polymorphism of the tumor cells sho...

Akira Matsumura, Alireza Ahyai, Akira Hori in Neurosurgical Review (1987)

Chapter

Prediction of the Reversibility of the Brain Stem Dysfunction in Head Injury Patients: MRI and Auditory Brain Stem Response Study

16 cases of head injury patients were examined by magnetic resonance imaging (MRI) and auditory brain stem response (ABR) simultaneously in acute stage in order to investigate the possibility of the prediction...

Akira Matsumura, Iwane Mitsui, Satoshi Ayuzawa… in Recent Advances in Neurotraumatology (1993)

Article

Localization of gelatinase activities in glioma tissues by film in situ zymography

Malignant gliomas are characterized by their invasiveness and angiogenesis, which are mediated by metalloproteinases (MMPs). In this study, localization of gelatinase activities in six cases of glioblastoma, t...

Shingo Takano, Koji Tsuboi, Akira Matsumura, Hiroshige Sato… in Brain Tumor Pathology (2001)

Article

Myelopathy caused by tics in an adolescent, associated with T2 signal intensity changes of the spinal cord

Course: A 15-year-old boy who had suffered motor tics since age 9 developed progressive cervical myelopathy involving both his hands and his lower extremities. T2-weighted MRI revealed mild canal...

Ai Muroi, Akira Matsumura, Hiroyuki Asakawa, Takao Enomoto… in Child's Nervous System (2002)

Article

Angiogenesis and antiangiogenic therapy for malignant gliomas

Angiogenesis is crucial to the growth of malignant gliomas. Therefore, antiangiogenic therapy represents a new, promising therapeutic modality for malignant gliomas. This study was designed to define the malig...

Shingo Takano, Hiroshi Kamiyama, Koji Tsuboi, Akira Matsumura in Brain Tumor Pathology (2004)

Article

Endoscopic observation of pathophysiology of ventricular diverticulum

Although there have been reports dealing with ventricular diverticulum (VD) analyzed by cisternography and computed tomography (CT), those focusing on magnetic resonance imaging (MRI) or neuroendoscopic findin...

Satoru Osuka, Shingo Takano, Takao Enomoto, Eiichi Ishikawa… in Child's Nervous System (2007)

Article

Proton magnetic resonance spectroscopy and ²⁰¹Thallium-, ^99m Technetium methoxyisobutylisonitrile single photon emission computed tomography findings of a patient with choroid plexus papilloma

Yasushi Shibata, Wataru Katayama, Hiraku Kawamura, Izumi Anno… in Neuroradiology (2008)

Article

Absolute choline concentration measured by quantitative proton MR spectroscopy correlates with cell density in meningioma

This study was aimed to investigate the relationship between quantitative proton magnetic resonance spectroscopy (1H-MRS) and pathological changes in meningioma.

Qiang Yue, Yasushi Shibata, Tomonori Isobe, Izumi Anno, Hiraku Kawamura… in Neuroradiology (2009)

Article

Factors affecting neurological deficits and intractable back pain in patients with insufficient bone union following osteoporotic vertebral fracture

The purpose of this study was to examine factors affecting the severity of neurological deficits and intractable back pain in patients with insufficient bone union following osteoporotic vertebral fracture (OV...

Masatoshi Hoshino, Hiroaki Nakamura, Hidetomi Terai, Tadao Tsujio… in European Spine Journal (2009)

Article

Cystic neurohypophysial germinoma associated with moyamoya disease

Moyamoya disease associated with a germinoma has never yet been reported in the literature. This report describes a case of a cystic neurohypophysial germinoma associated with moyamoya disease. A 15-year-old g...

Yasushi Shibata, Masahide Matsuda, Kensuke Suzuki, Akira Matsumura in Neurological Sciences (2010)

Article

Detection of failure of bevacizumab treatment for malignant glioma based on urinary matrix metalloproteinase activity

Although antiangiogenic treatment for malignant glioma using bevacizumab in combination with irinotecan chemotherapy has a promising effect on survival, the high incidence of increasing infiltrative tumors can...

Shingo Takano, Ryota Mashiko, Satoru Osuka, Eiichi Ishikawa… in Brain Tumor Pathology (2010)

Article

Epileptogenic glioma in a 4-year-old child: a case report

We report a rare case of epileptogenic glioma composed of glial progenitor cells that differentiated into an astrocytic and oligodendrocytic tumor. This 4-year-old girl presented with a 1-year history of compl...

Ai Muroi, Shingo Takano, Kaishi Satomi, Akira Matsumura in Brain Tumor Pathology (2010)

Article

Detection of IDH1 mutation in human gliomas: comparison of immunohistochemistry and sequencing

Isocitrate dehydrogenase 1 (IDH1) mutations have recently been identified as early and frequent genetic alterations in astrocytomas, oligodendrogliomas, and oligoastrocytomas, as well as secondary glioblastoma...

Shingo Takano, Wei Tian, Masahide Matsuda, Tetsuya Yamamoto… in Brain Tumor Pathology (2011)

Article

Guideline for management and treatment of fetal and congenital hydrocephalus: Center Of Excellence—Fetal and Congenital Hydrocephalus Top 10 Japan Guideline 2011

Hydrocephalus does not indicate a single clinical entity, but includes a variety of clinicopathological conditions caused by excessive cerebrospinal fluid (CSF) based on the disturbed circulation. Recent progr...

Shizuo Oi, Takayuki Inagaki, Masaki Shinoda, Satoshi Takahashi… in Child's Nervous System (2011)

Chapter and Conference Paper

Decrease in the Apparent Diffusion Coefficient in Peritumoral Edema for the Assessment of Recurrent Glioblastoma Treated by Bevacizumab

Purposes: Anti-edema effect of bevacizumab was evaluated using the apparent diffusion coefficient (ADC) of peritumoral edema associated with regional cerebral blood flow (rCBV) of the tumor.

Shingo Takano MD, PhD, Hidehiro Kimu, Kyoji Tsuda, Satoru Osuka… in Brain Edema XV (2013)

Article

Benign spinal meningioma without dural attachment presenting delayed CSF dissemination and malignant transformation

Benign spinal meningiomas have good prognoses, with low rates of recurrence and no cerebrospinal fluid (CSF) dissemination. However, we experienced an extremely rare case of initially benign non-dura-based spi...

Kyoji Tsuda, Hiroyoshi Akutsu, Tetsuya Yamamoto, Eiichi Ishikawa… in Brain Tumor Pathology (2013)

Article

Clinical characteristics of intraspinal facet cysts following microsurgical bilateral decompression via a unilateral approach for treatment of degenerative lumbar disease

Primary intraspinal facet cysts in the lumbar spine are uncommon, but it is unclear whether cyst incidence increases following decompression surgery and if these cysts negatively impact clinical outcome. We ex...

Minori Kato, Sadahiko Konishi, Akira Matsumura, Kazunori Hayashi… in European Spine Journal (2013)