Investigation and Modeling of Magnetization Transfer Effects of conventional and hyperecho TSE sequences at 1.5T and 3T
Hennig J, Weigel M
University Hospital Freiburg
2D turbo spin echo sequences (TSE) with a large number of slices find widespread applications in clinical routine MRI examinations. One undesirable side effect of this type of acquisition is that adjacent slices lead to an artificial magnetization transfer (MT) effect, thus, contrast changes. Low flip angle TSE sequences have become common to limit SAR. In this work, MT effects for different multi-slice TSE sequences with arbitrary flip angles are quantified and compared to a TSE180 at 1.5T and 3T. A modified model derived from classic MT experiments is presented that can accurately describe the measured data.