Disclosed is a method performed by a computer, which is to stereometrically determine a midsagittal plane (MSP) from a plurality of magnetic resonance (MR) images of a brain. A plurality of MR images are received and converted into a 3D volumetric image defined in a 3D coordinate space. The present invention is performed based on a pre-trained segmentation model to generate a 3D mask image labeled as an anterior commissure (AC) region and a posterior commissure (PC) region in the 3D volumetric image, sematic-segmented AC- and PC regions in a third cerebral ventricle region, and the third cerebral ventricle region. Also, a 3D volumetric measurement image of the segmented third cerebral ventricle region is created on the basis of the labeled 3D mask image. In addition, an MSP is determined based on the 3D volumetric measurement image of the third cerebral ventricle region.
METHOD AND APPARATUS FOR DETERMINING MID-SAGITTAL PLANE IN MAGNETIC RESONANCE IMAGES