Simple analytic variable density spiral design.
Variable density spirals have been proposed in a variety of applications, including MR fluoroscopy, cardiac imaging, and MR spectroscopic imaging. In this work, a simple analytic solution for designing a flexible set of variable density spiral trajectory waveforms is presented. The method enables real-time waveform prescription on scanners with limited computational power. Both slew rate-limited and amplitude-limited regimes are incorporated in the design process.
Kim
Dong-hyun
DH
Radiological Sciences Laboratory, Department of Radiology, Stanford University, Stanford, California 94305-5488, USA. dhkim@stanford.edu
Adalsteinsson
Elfar
E
Spielman
Daniel M
DM
D000465:Algorithms; D016477:Artifacts; D001921:Brain / Q000033:anatomy & histology* / Q000378:metabolism*; D001923:Brain Chemistry; D005240:Feasibility Studies; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*; D015233:Models, Statistical; D019047:Phantoms, Imaging; D013050:Spectrometry, Fluorescence / Q000379:methods*