A5054416068- Meningioma and schwannoma management
- Spinal Fractures and Fixation Techniques
- Vascular Malformations Diagnosis and Treatment
- Head and Neck Surgical Oncology
- Neurofibromatosis and Schwannoma Cases
- Intracranial Aneurysms: Treatment and Complications
- Glioma Diagnosis and Treatment
- Spine and Intervertebral Disc Pathology
- Cerebrospinal fluid and hydrocephalus
- Pituitary Gland Disorders and Treatments
- Spinal Dysraphism and Malformations
- Cervical and Thoracic Myelopathy
- Neurosurgical Procedures and Complications
- Spinal Hematomas and Complications
- Epilepsy research and treatment
- Cerebral Venous Sinus Thrombosis
- Cerebrovascular and Carotid Artery Diseases
- Advanced Neuroimaging Techniques and Applications
- Traumatic Brain Injury and Neurovascular Disturbances
- Management of metastatic bone disease
- Medical Imaging Techniques and Applications
- Acute Ischemic Stroke Management
- Functional Brain Connectivity Studies
- Advanced MRI Techniques and Applications
- Bone Tumor Diagnosis and Treatments
Osaka Metropolitan University
2024-2025
Tokyo Metropolitan University
2024-2025
Osaka Hospital
2024
Osaka City University
2014-2023
Osaka City University Hospital
2010-2022
Miwa Hospital
2022
Lead City University
2022
Osaka University
2014-2021
Al-Azhar University
2021
Osaka City General Hospital
2018-2019
We evaluated the diagnostic accuracy of PET with l-methyl-<sup>11</sup>C-methionine (<sup>11</sup>C-MET) for differentiation recurrent brain tumors from radiation necrosis. <b>Methods:</b> Seventy-seven patients who had been previously treated radiotherapy after primary treatment metastatic tumor (<i>n</i> = 51) or glioma 26) were studied to clarify performance <sup>11</sup>C-MET in differentiating between and A total 88 scans obtained; sometimes more than one scan was obtained when there an...
Object. In this study the authors examined how to differentiate radiation necrosis from recurrent metastatic brain tumor following stereotactic radiosurgery by using positron emission tomography (PET) with l -[methyl- 11 C]methionine (MET). Methods. 21 adult patients suspected or injury, MET-PET scans were obtained. These had previously undergone and subsequent contrast-enhanced magnetic resonance (MR) examinations before nuclear medicine imaging. Positron images obtained as a static scan of...
OBJECTIVE Craniopharyngiomas remain a particularly formidable challenge in the neurosurgical field. Because these lesions involve hypothalamus and ophthalmological systems, their resection is associated with either higher rates of mortality recurrence or lower rate radical resection. The authors report outcomes aggressive surgeries based on an anatomical subclassification craniopharyngiomas. METHODS Clinical examinations, imaging studies, endocrinological neuropsychological function,...
✓ The microsurgical anatomy of the jugular foramen was studied in 10 fixed cadavers, each cadaver consisting whole head and neck. Five cadavers were injected with latex. foraminal region exposed using infratemporal fossa type A approach Fisch Pillsbury five (10 sides) combined cervical dissection—mastoidectomy—suboccipital craniectomy sides). right larger than left seven cases (70%), equal two (20%), smaller one case (10%). dura covering intracranial portal had perforations, a anteromedial...
Various surgical approaches, such as uni- and bifrontal, frontolateral, pterional have been advocated for tuberculum sellae meningiomas. The authors retrospectively reviewed the effectiveness of a bilateral subfrontal approach meningiomas with special attention to ophthalmological outcomes complications.Between 1993 2009, 34 patients underwent surgery removal at Osaka City University. Tumor size ranged from 14 45 mm. Thirty-two presented visual disturbances before surgery. functions in all...
Because resection followed by timely stereotactic radiosurgery (SRS) is becoming a standard strategy for skull base meningiomas, the role of initial surgical tumor reduction in this combined treatment should be clarified.This study examined 161 patients with benign meningiomas surgically treated at Osaka City University between January 1985 and December 2005. The mean follow-up period was 95.3 months. Patients were categorized into 3 groups based on operative 4 location. Maximal performed as...
Cross-sectional study.To assess spinal cord condition in patients with cervical spondylosis (CS), using diffusion tensor imaging parameter.Although myelopathy is a common symptom after CS, clinically objective assessment for determination of surgical intervention not straightforward.Twenty-six CS and 30 normal control subjects were enrolled. Diffusion was obtained single-shot fast spin-echo-based sequence at 3.0 T. Mean diffusivity (MD) fractional anisotropy (FA) measured the axial plane 6...
In this paper the authors report on sigmoid sinus occlusion as a surgical complication in seven of 143 operations which presigmoidal-transpetrosal approach was used.Five patients (Cases 1-5) developed within 40 days after surgery, and remaining two 6 7) detected 5.4 6.4 years postsurgery by means cerebral venography, performed 138 patients. Of with hypoplastic transverse sinus, one (Case 1) did not develop symptoms other 2) brain edema transient aphasia. three suffering from dominant 3)...
✓ The transit routes of fluid and particulate matter through brain tissue remain unclear. object this study was to examine the movement macromolecules further clarify clearance pathways edema proteins as they migrate toward cortex. For purpose, albumin solution (20 µl rat diluted 65 mg/ml with mock cerebrospinal (CSF)) intracerebrally infused into caudate putamen, migration well ultrastructure cortical surfaces explored using an immunocytochemical technique. authors observed immunoreactive...
Petroclival meningiomas are among the most challenging intracranial tumors to treat surgically. Many skull base approaches have been described improve resection and decrease patient morbidity. The authors undertook this study evaluate results of their treatment petroclival using objective measurements tumor volume a new impairment scoring system assess neurological symptoms that severely affect patient's quality life, such as swallowing speaking, motor function, consciousness...
Although spinal meningiomas respond favorably to surgical excision, their management is impacted by several factors. This study utilized a surgery-based grading system discuss the optimal strategy.Twenty-three consecutive patients who underwent surgery for were included in this retrospective study. The patients' neurological condition was assessed using modified McCormick functional schema (mMFS) and sensory pain scale (SPS), tumor removal Simpson grade. Major factors contributing difficulty...
Object. Functional hemispherectomy, itself a modification of anatomical has been further modified to less invasive method (hemispherotomy), in which cortical resection is minimized and the rest affected hemisphere functionally isolated by transecting its projection commissural fibers. Although descriptions three different types hemispherotomy procedures have published, authors believe that it important develop common universally acceptable based on systematic analysis topographic anatomy...
<b>BACKGROUND AND PURPOSE:</b> The inferior petrosal sinus (IPS) is the main transvenous access route used to examine or treat lesions involving cavernous sinus. To carry out these procedures successfully, one must have a detailed knowledge of anatomy venous system around junction IPS and internal jugular vein (IJV). <b>MATERIALS METHODS:</b> Eighty-three sides in 63 patients (26 men, 37 women; mean, 56.5 years age) were examined by using 3D rotational venography (3DRV). <b>RESULT:</b>...
A 50-year-old man presented with pituitary apoplexy resulting in internal carotid artery occlusion manifesting as sudden onset of severe headache, right ptosis, and left hemiparesis, associated visual impairment. Computed tomography showed a nodular mass, located the sellar suprasellar regions early signs acute cerebral ischemia. Magnetic resonance (MR) imaging indicated that mass compressed bilateral cavernous sinuses, obliteration portion artery. Right middle territory infarction was also...
Retrochiasmatic craniopharyngiomas are surgically challenging tumors. with complicated conditions such as large diameter, major calcification, or significant extension to the third ventricle posterior fossa present surgical challenges; moreover, recurrent retrochiasmatic particularly formidable challenges. Although transpetrosal approach published by Hakuba in 1985 can provide unique advantageous exposure of area allow safe neurovascular dissection and facilitate radical tumor removal,...