Prediction of motor function outcome after intracerebral hemorrhage using fractional anisotropy calculated from diffusion tensor imaging.

Background: The efficacy of surgical evacuation in patients with intracerebral hemorrhage (ICH) remains unclear for recovery of motor function. The relationship between improvement of motor function outcome and sequential change of fractional anisotropy (FA) values was investigated in patients with ICH, to explore whether motor function outcome can be predicted in the early phase. Indication of the surgical hematoma evacuation was also considered.

[Case of a horn-shaped osteoma].

A Case of osteoma with horn shape is rare. A 79-years-old man, in whom the osteoma with horn shape was not demonstrated three years ago. Slowly, the osteoma becomes accompanied with pain, and the slow growth of a horn.

Desmoplastic infantile astrocytoma and characteristics of the accompanying cyst. Case report.

A desmoplastic infantile astrocytoma (DIA) is an extremely rare tumor that comprises a solid astrocytic tumor accompanied by a large cyst and involves the superficial cerebral cortex and leptomeninges in infants. The solid part of this type of tumor has been well described in various reports and books, but characteristics of the cystic portion have remained unclear. Because adequate resection is required to ensure a favorable prognosis, information about the cyst is very important for diagnostic purposes and surgical planning.

Effect of 3-tesla magnetic resonance imaging on various pressure programmable shunt valves.

Object: This study investigated the changes in the valve pressure setting of several magnetic pressure-programmable valves after exposure to a 3-tesla magnetic field.

Methods: Five each of four types of pressure-programmable shunt valves were tested: Sophy Polaris, Sophy SM8, Codman-Hakim, and Medtronic Strata. First, the valves were advanced toward the 3-tesla static magnetic field.

Quantitative analysis of magnetic resonance imaging susceptibility artifacts caused by neurosurgical biomaterials: comparison of 0.5, 1.5, and 3.0 Tesla magnetic fields.

Magnetic resonance (MR) imaging is an important diagnostic tool for neurosurgical diseases but susceptibility artifacts caused by biomaterial instrumentation frequently causes difficulty in visualizing postoperative changes. The susceptibility artifacts caused by neurosurgical biomaterials were compared quantitatively by 0.5, 1.

Utility of three-dimensional anisotropy contrast magnetic resonance axonography for determining condition of the pyramidal tract in glioblastoma patients with hemiparesis.

Background And Purpose: Three-dimensional anisotropy contrast magnetic resonance axonography (3DAC) is a technique for diffusion weighted magnetic resonance imaging (DWI) that offers reliable visualization of the pyramidal tracts. This study evaluated condition of the pyramidal tract using 3DAC in glioblastoma patients with hemiparesis.

Methods: In 18 glioblastoma patients before surgery, 3DAC findings of the pyramidal tract responsible for hemiparesis were compared with finding from proton density-weighted imaging (PDWI).

[A case of malignant peripheral nerve sheath tumor originating from the cervical vagus nerve].

A 45-year-old female presented a peripheral nerve sheath tumor (MPNST), which had progressed to malignancy from a neurofibroma arising in the left cervical vagus nerve. Neuroimaging showed that a tumor grew in the left neck area of the patient, involving the internal carotid and vertebral arteries, and invading the intracranium through the left jugular foramen. The tumor was extensively removed using a combination of the lateral suboccipital approach and the neck incision, and the frontotemporal approach accompanied with EC-IC highflow bypass and EC-MCA anastomosis.