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Abstract #0661

Using flow models to study the effects of bolus timing on CE-MRA images

Gabriel Acevedo-Bolton 1 , Farshid Faraji 1 , and David Saloner 1,2

1 Radiology and Biomedical Imaging, UCSF, San Francisco, CA, United States, 2 VAMC San Francisco, CA, United States

Image quality in patients undergoing CE-MRA is sensitive to correct synchronization between imaging initiation and the contrast bolus. A patient specific flow model was used to study the effects of scan initiation relative to contrast injections on 3D CE-MRA images. We found unless the center of k-space was in after the contrast upswing poor image quality resulted. With the high temporal resolution available, we were able to resolve the transport of contrast into the model. More importantly, the use of a flow model provides a robust and repeatable test bed to study timing effects.

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