Patent ID: 8427151
Filing Date: 2013-04-23
Classification: A61B,G06T

Abstract:
1. A method for removing cerebrospinal fluid (CSF) pixels on a brain perfusion parametric image of a subject, with a magnetic resonance imaging system, the subject being administered with a contrast agent, comprising the steps of: a) acquiring a series of dynamic magnetic resonance images from the subject's brain wherein the dynamic magnetic resonance images comprises at least a signal of CSF and at least a signal of brain matter; b) calculating a brain perfusion parametric image from the dynamic images; c) acquiring a CSF/brain-contrast-enhanced image, wherein the CSF/brain-contrast-enhanced image is defined as the signal difference between CSF and brain matter divided by a standard deviation of air background random noise is larger than 3, from the subject's brain; d) applying a segmentation method to the CSF/brain-contrast-enhanced image with or without the use of other images of the subject's brain for identifying a plurality of CSF pixels containing the signal of CSF; and e) removing the CSF pixels identified in the step d), when displaying the brain perfusion parametric image calculated in the step b).