title: On the cause of spatial displacement of long T1 species in segmented inversion recovery prepared imaging.
abstract: Using inversion recovery steady-state free precession segmented k-space imaging for the detection of myocardial infarction, we noticed that some structures appeared in the wrong locations of the image. In this work, the spatial displacement is demonstrated and explained from both theoretical and experimental points of view. The effect is due to a change in phase from segment to segment of the detected magnetization from species with long T1's such as cysts, fluid collections, and cerebrospinal fluid. Depending on the number of k-space segments and view ordering, structures can be replicated throughout the image or displaced by half of the phase-encoding field of view.
authors: Department of Research and Education, Saint Francis Hospital, Roslyn, New York 11576, USA. James.Goldfarb@chsli.org
authors: James W
authors: JW
authors: Goldfarb
authors: Sheeba
authors: S
authors: Arnold
authors: William
authors: W
authors: Schapiro
authors: Nathaniel
authors: N
authors: Reichek
mesh_terms: D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D009203:Myocardial Infarction / Q000175:diagnosis*; D019047:Phantoms, Imaging