title: Motion tracking and strain map computation for quasi-static magnetic resonance elastography.
abstract: This paper presents a new imaging method for quasi-static magnetic resonance elastography (MRE). Tagged magnetic resonance (MR) imaging of human lower leg was acquired with probe indentation using a MR-compatible actuation system. Indentation force was recorded for soft tissue elasticity reconstruction. Motion tracking and strain map of human lower leg are calculated using a harmonic phase (HARP)-based method. Simulated tagged MR images were constructed and analyzed to validate the HARP-based method. Our results show that the proposed imaging method can be used to generate accurate motion distribution and strain maps of the targeted soft tissue.
authors: Department of Mechanical Engineering, National University of Singapore, Singapore. g0800248@nus.edu.sg
authors: Y B
authors: YB
authors: Fu
authors: C K
authors: CK
authors: Chui
authors: C L
authors: CL
authors: Teo
authors: E
authors: E
authors: Kobayashi
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004548:Elasticity; D054459:Elasticity Imaging Techniques / Q000295:instrumentation* / Q000379:methods*; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007866:Leg / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009038:Motion; D012984:Software