BLOOD FLOW DYNAMIC ANALYSIS APPARATUS, MAGNETIC RESONANCE IMAGING APPARATUS, BLOOD FLOW DYNAMIC ANALYSIS METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a blood flow dynamic analysis apparatus, a magnetic resonance imaging apparatus and a blood flow dynamic analysis method that can enhance the reliability of a computed perfusion parameter value.SOLUTION: A signal intensity data sequence indicating the time change of signal intensity of magnetic resonance signals is obtained, and the signal intensity data sequence is used to obtain a concentration data sequence indicating the time change of concentration of a contrast medium. Three constants of a fitting function are then computed using the concentration of the contrast medium weighted with a weighting coefficient which is a coefficient defined to reduce the weight of concentration of the contrast medium as it gets far from the peak value time. These constants are used to compute a perfusion parameter for analyzing the blood flow dynamics of a subject.