Work

Wideband SSFP: Alternating repetition time balanced steady state free precession with increased band spacing

Year: 2007

Type: article

Abstract: Balanced steady-state free precession (SSFP) imaging is limited by off-resonance banding artifacts, which occur with periodicity 1/TR in the frequency spectrum. A novel balanced SSFP technique for widening the band spacing in the frequency response is described. This method, called wideband SSFP, utilizes two alternating repetition times with alternating RF phase, and maintains high SNR and T(2)/T(1) contrast. For a fixed band spacing, this method can enable improvements in spatial resolution compared to conventional SSFP. Alternatively, for a fixed readout duration this method can widen the band spacing, and potentially avoid the banding artifacts in conventional SSFP. The method is analyzed using simulations and phantom experiments, and is applied to the reduction of banding artifacts in cine cardiac imaging and high-resolution knee imaging at 3T.

Source: Magnetic Resonance in Medicine

DOI: 10.1002/mrm.21296

Authors: Krishna S. Nayak, Hsu‐Lei Lee, Brian A. Hargreaves, Bob S. Hu

Institutions: University of Southern California, Stanford Medicine, Stanford University, Palo Alto Medical Foundation

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: American Heart Association, National Institutes of Health, Viterbi School of Engineering, University of Southern California, National Heart, Lung, and Blood Institute