Auto-calibrated dynamic parallel MRI with phase-sensitive data. Academic Article

abstract

• A number of MRI applications rely on dynamic phase information embedded in the acquired images. Such applications often require multiple acquisitions, leading to possibly long scan time and low temporal resolution. Previously, SENSE method has been used for phase-sensitive data to shorten acquisition time. However, SENSE can be subject to artifacts due to inaccurate coil sensitivities and low SNR. In this paper, dynamic phase data are derived from self-calibrated parallel MRI and an optimal method is used to combine phase information from multiple receiver channels. Simulation results using 4-channel prostate imaging data show that it is possible to get a factor of 3 speedup and the new method is more accurate than the SENSE method in reconstructing the phase information, thus has potential to improve phase-sensitive MRI applications such as phase contrast velocity mapping, temperature mapping for thermal therapy, and Dixon water/fat imaging.

authors

• Ji, Jim

published proceedings

• Conf Proc IEEE Eng Med Biol Soc

author list (cited authors)

• Son, J. B., & Ji, J. X.

citation count

• 0

complete list of authors

• Son, Jong Bum||Ji, Jim X

publication date

• August 2006

publisher

• IEEE  Publisher

published in

• Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference  Journal

keywords

• Algorithms
• Calibration
• Humans
• Image Enhancement
• Image Interpretation, Computer-Assisted
• Magnetic Resonance Imaging
• Male
• Prostate
• Reproducibility Of Results
• Sensitivity And Specificity
• United States

Digital Object Identifier (DOI)

• 10.1109/IEMBS.2006.260695

start page

• 751

end page

• 754

volume

• 2006

URL

• http://dx.doi.org/10.1109/iembs.2006.260695