Enlargement of the middle meningeal artery on MR angiography in chronic subdural hematoma.

OBJECT The middle meningeal artery (MMA) is suspected to play an important role in the development of chronic subdural hematoma (CSDH). The aim of this study was to clarify whether the MMA was enlarged in patients with CSDHs. METHODS The authors retrospectively assessed 55 patients in whom CSDH was diagnosed between 2010 and 2014 and who underwent MR angiography (MRA) after the onset of CSDH.

Chronic Subdural Hematomas Associated with Arachnoid Cysts: Significance in Young Patients with Chronic Subdural Hematomas.

Although arachnoid cysts (ACs) are associated with chronic subdural hematomas (CSDHs), especially in young patients, the detailed features of CSDHs associated with ACs remain poorly understood. The objective of this study was to clarify the relationship between the location of CSDHs and ACs and the significance of ACs in young patients with CSDHs. We retrospectively assessed 605 consecutive patients 7 years of age and older who were diagnosed with a CSDH between 2002 and 2014.

Risks and benefits of CT angiography in spontaneous intracerebral hemorrhage.

Background: Few studies have examined the risk of computed tomography angiography (CTA) during the acute phase of spontaneous intracerebral hemorrhage (ICH), while the benefits of CTA in ICH have been well-documented. The present study investigated both the benefits of identifying spot signs, which are supposed to indicate hematoma enlargement after admission, and risks of CTA performed during the acute phase of ICH.

Methods: We retrospectively assessed 323 consecutive patients with spontaneous ICHs admitted to our hospital between April 2009 and March 2012 and who underwent CTA on admission.

The striate artery, hematoma, and spot sign on coronal images of computed tomography angiography in putaminal intracerebral hemorrhage.

Background And Purpose: A spot sign is a bright spot on computed tomography angiography source images, which is predictive of hematoma growth in spontaneous intracerebral hemorrhage, although the cause of the spot sign is unclear. Our aim was to investigate the spot sign seen on computed tomography angiography and a striate artery, which is a presumed site of intracerebral hemorrhage bleeding origin in the putamen.

Methods: In consecutive cases of spontaneous intracerebral hemorrhage in the putamen, spot signs and striate arteries were evaluated.

Impact of the combination of 5-aminolevulinic acid-induced fluorescence with intraoperative magnetic resonance imaging-guided surgery for glioma.

Objective: To compare intraoperative magnetic resonance imaging (MRI)-guided resection with resection guided by 5-aminolevulinic acid (5-ALA)-induced fluorescence in patients with gliomas and to evaluate the impact of intraoperative MRI in glioma surgery.

Methods: From January 2005 to February 2009, 33 patients with gliomas (6 with World Health Organization [WHO] grade II, 7 with WHO grade III, 20 with WHO grade IV) who underwent craniotomy with neuronavigation and received 5-ALA by the same neurosurgeon were investigated retrospectively. In 19 patients, operations were performed using a combination of 5-ALA with intraoperative 1.

Mechanism of injury to the corpus callosum, with particular reference to the anatomical relationship between site of injury and adjacent brain structures.

The location of corpus callosum injury was investigated using magnetic resonance imaging in 92 patients. The anatomical relationships in the region around the corpus callosum were also evaluated to clarify involvement in the mechanism of corpus callosum injury in 20 normal volunteers. Lesions in the posterior half of the corpus callosum accounted for 80% of corpus callosum injuries.

Fully functional MR-compatible flexible operating table resolves the neurosurgeon's dilemma over use of intraoperative MRI.

In February 2006, our hospital officially opened the Magnetic Resonance / X-ray / operation (MRXO) suite, which is the first hybrid neurosurgical procedure suite to combine magnetic resonance imaging (MRI), computed tomography and angiography with a neurosurgical operating room. For this suite, we have developed a specially designed fully functional magnetic resonance (MR)-compatible flexible operating table. Here, we describe the details of this operating table and discuss its advantages.

World's first magnetic resonance imaging/x-ray/operating room suite: a significant milestone in the improvement of neurosurgical diagnosis and treatment.

Object: In February 2006, the magnetic resonance/x-ray/operating room (MRXO) suite opened at the authors' institution. This is the first hybrid neurosurgical procedure suite to combine magnetic resonance (MR) imaging, computed tomography (CT), and angiography within a neurosurgical operating room (OR). In the present paper the authors describe the concept of the MRXO as well as their first 10 months of experience using this suite, and discuss its advantages and limitations.

[The usefulness of MRI around the tentorial incisura for determining the mechanism of brain stem injury: a case report].

We report a case of isolated brain stem injury caused by the tentorium cerebelli. A 17-year-old male was admitted to our hospital. Thirty minutes before admission, he was struck by another motorcycle while driving his own motorcycle.