[Clinicoradiological studies and frequency of incidental meningiomas on brain check-up].

The purpose of this study is to evaluate clinico-radiological findings and to estimate frequency of incidental meningiomas detected by brain check-up (BC). A total of 12,258 healthy adults (8,515 men and 3,743 women) had BC, using physical check-up, brain magnetic resonance imaging (MRI) and MR angiography. Mean age (SD) was 52.

Adult moyamoya disease in the asymptomatic Japanese population.

Moyamoya disease (MMD) is a spontaneous occlusive disease of the Willis circle. This study evaluated the presence of the radiological hallmarks of adult MMD on a "brain check-up" (BC) using MRI and MR angiography, in Japan. BC was offered to 11,402 healthy subjects (7570 men and 3832 women) between January 1997 and November 2003.