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Abstract #4722

Time-Resolved Contrast-Enhanced Radial Ghost MRA

Hyun Jong Jeong1, Ioannis Koktzoglou2, Christopher S. Eddleman3, John Sheehan4, James Carr4, Timothy John Carroll1,4, Robert Edelman5

1Biomedical Engineering, Northwestern University, Chicago, IL, USA; 2Radiology, Northshore University Hospital, Evanston, IL, USA; 3Neurological Surgery, Northwestern University, Chicago, IL, USA; 4Radiology, Northwestern University, Chicago, IL, USA; 5Radiology, North Shore University Hospital, Evanston, IL, USA

A novel time-resolved contrast-enhanced MR angiography technique is introduced. The technique does not require subtraction and uses ghost images to separate the vessels from background tissues. The SNR loss resulting from subtraction of pre-contrast images from the post-contrast frames is prevented. Based on inducing ghost artifacts arising from inconsistency in k-space data, this technique is combined with radial sliding window reconstruction for time-resolved imaging.