Patent Document ID: 20110031971
Application ID: 12850705
Patent Status: 0

Claim One:
1. A method to generate a magnetic resonance (MR) angiography image of an examination region of a subject, comprising the steps of: operating an MR data acquisition unit with an examination subject therein to acquire a first MR image of an examination region of the subject using a first imaging sequence comprising a plurality of repetition intervals, in which a gradient-induced phase development for unmoved and moved nuclear spins in the examination region is substantially completely rephased at an end of each repetition interval; operating the MR data acquisition unit with the examination subject therein to acquire a second MR image of the examination region using a second imaging sequence, also comprising a plurality of repetition intervals, in which the gradient-induced phase development for unmoved nuclear spins is also substantially completely rephased at an end of each repetition interval in the second imaging sequence, and in which a rest phase for moved nuclear spins exists at the end of each repetition interval of the second imaging sequence; and supplying said first MR image and said second MR image to a computerized processor and, in said processor, subtracting said second MR image from said first MR image to generate an MR angiography image of the examination region.