Abstract:
PURPOSE:The aim of this study was to determine to what degree current compressed sensing methods are capable of accelerating clinical magnetic resonance neuroimaging sequences. METHODS:Two 2-dimensional clinical sequences were chosen for this study because of their long scan times. A pilot study was used to establish the sampling scheme and regularization parameter needed in compressed sensing reconstruction. These findings were used in a subsequent blinded study in which images reconstructed using compressed sensing were evaluated by 2 board-certified neuroradiologists. Image quality was evaluated at up to 10 anatomical features. RESULTS:The findings indicate that compressed sensing may provide 2-fold acceleration of certain clinical magnetic resonance neuroimaging sequences. A global ringing artifact and image blurring were identified as the 2 primary artifacts that would hinder the ability to confidently discern abnormality. CONCLUSION:Compressed sensing is able to moderately accelerate certain neuroimaging sequences without severe loss of clinically relevant information. For those sequences with coarser spatial resolution and/or at a higher acceleration factor, artifacts degrade the quality of the reconstructed image to a point where they are of little to no clinical value.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Sharma SD,Fong CL,Tzung BS,Law M,Nayak KSdoi
10.1097/RLI.0b013e31828a012dsubject
Has Abstractpub_date
2013-09-01 00:00:00pages
638-45issue
9eissn
0020-9996issn
1536-0210journal_volume
48pub_type
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journal_title:Investigative radiology
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