Comparison of 7T and 3T MRI in patients with moyamoya disease.

Magnetic resonance imaging and magnetic resonance angiography (MRI/MRA) are widely used for evaluating the moyamoya disease (MMD). This study compared the diagnostic accuracy of 7Tesla (T) and 3T MRI/MRA in MMD. In this case control study, 12 patients [median age: 34years; range (10-66years)] with MMD and 12 healthy controls [median age: 25years; range (22-59years)] underwent both 7T and 3T MRI/MRA.

Spontaneous Resolution of a Large Chronic Subdural Hematoma Which Required Surgical Decompression.

We report on a case of an 87-year-old woman who showed spontaneous resolution of a large chronic subdural hematoma which required surgical decompression. She had suffered from confused mentality and right side weakness of motor grade II for 10 days. The initial brain CT scan showed a 22 mm thick low density lesion located in the left fronto-temporo-parietal region with midline shift (12 mm) which required emergency decompression.