Patent ID: 7684600
Filing Date: 2010-03-23
Classification: A61B

Abstract:
1. A method for calculating 3D volume of cerebral hemorrhage lesion, comprising the steps of: setting ROI of normal cerebral parenchymal region and ROI of cerebral hemorrhage lesion, respectively, based on a plurality of images of continuous slices obtained by imaging a head affected by a cerebral hemorrhage by an X-ray CT device; determining mean value of CT values of pixels within said ROI of normal cerebral parenchymal region for a plurality of images; determining, based on the reference with the mean value of one image, the amount of shift of the mean value of any other images; using the shift value for each image to adjust the CT value of pixels within the ROI of the cerebral hemorrhage lesion for each image; specifying the maximum value of CT values after adjustment through a plurality of images; and calculating 3D volume of cerebral hemorrhage lesion given by the following equation: where: n: pixel number of pixel within the ROI of cerebral hemorrhage lesion in a plurality of images; N: total number of pixels within the ROI of cerebral hemorrhage lesion in a plurality of images; p DFOV: dimension of defined FOV; SFOV: dimension of scanned FOV; SliceThickness: thickness of a slice; and Magnification: magnification value.