System and method for detecting and tracking reference position changes with linear phase shift in magnetic resonance imaging

摘要: A fast and computationally efficient system method is disclosed for detecting tracking the position of a reference structure in body using linear phase shift to minimize motion artifacts magnetic resonance imaging. In one application, used determine relative diaphragm order synchronize data acquisition same with respect abdominal thoracic organs respiratory artifacts. The uses time domain its spatial positional displacement as function cycle. signal from two-dimensional rectangular or cylindrical column first Fourier transformed image domain, apodized bandwidth-limited, converted real, positive values by taking magnitude profile, then back domain. target edge determined an auto-correlation resulting information.