2026-04-27T21:22:23Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/313802021-10-15T06:56:10Zcom_10324_1191com_10324_931com_10324_894col_10324_1381

00925njm 22002777a 4500 dc Sanz Estébanez, Santiago Rodrigo author Cordero Grande, Lucilio author Martín Fernández, Marcos Antonio author Alberola López, Carlos author 2018 The HARP methodology is a widely extended procedure for cardiac tagged magnetic resonance imaging since it is able to analyse local mechanical behaviour of the heart; extensions and improvements of this method have also been reported since HARP was released. Acquisition of an over-determined set of orientations is one of such alternatives, which has notably increased HARP robustness at the price of increasing examination time. In this paper, we explore an alternative to this method based on the use of multiple peaks, as opposed to multiple orientations, intended for a single acquisition. Performance loss is explored with respect to multiple orientations in a real setting. In addition, we have assessed, by means of a computational phantom, optimal tag orientations and spacings of the stripe pattern by minimizing the Frobenius norm of the difference between the ground truth and the estimated material deformation gradient tensor. Results indicate that, for a single acquisition, multiple peaks as opposed to multiple orientations, are indeed preferable http://uvadoc.uva.es/handle/10324/31380 Robust Windowed Harmonic Phase Analysis with a Single Acquisition