Meeting Banner
Abstract #0240

SNR and CNR Comparison of Single-Echo Dixon and Subtraction Contrast-Enhanced MR Angiography

Eric G. Stinson 1 , Joshua D. Trzasko 1 , Paul T. Weavers 1 , and Stephen J. Riederer 1

1 Mayo Clinic, Rochester, Minnesota, United States

Single-echo Dixon-based methods can provide the benefits (improved SNR, subtraction error reduction) of Dixon-based contrast-enhanced MR angiography (CE-MRA) without extending scan time. A theoretical SNR and CNR analysis of single-echo Dixon compared to subtraction CE-MRA was performed and compared to phantom and in vivo results. Single-echo Dixon CE-MRA provides a contrast concentration-dependent SNR and CNR boost of at least root; radical 2 over subtraction CE-MRA. At high contrast concentrations (>3-4mmol) Gadolinium-induced susceptibility artifacts can reduce the SNR and CNR of pre-calibrated Dixon CE-MRA. This technique may allow time-resolved CE-MRA with higher SNR and CNR and improved resistance to motion than subtraction-based methods.

This abstract and the presentation materials are available to members only; a login is required.

Join Here