Meeting Banner
Abstract #3238

Free-breathing oxygen-enhanced pulmonary imaging with self-gated stack-of-spirals ultra-short echo time sequence at 0.55T

Ahsan Javed1, Rajiv Ramasawmy1, Pan Su2, Thomas Benkert3, Waqas Majeed2, and Adrienne E Campbell-Washburn1
1Cardiovascular Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States, 2Siemens Medical Solutions USA Inc., Malvern, PA, United States, 3Siemens Healthcare GmbH, Erlangen, Germany

Recently, low-field MRI has been shown to improve the sensitivity of oxygen-enhanced (OE) MRI due to the increased relaxivity of oxygen at lower field strengths. In this work, we demonstrate that using self-gated 3D stack-of-spiral OE-MRI we can further improve the sensitivity and repeatability by: 1) using longer free-breathing acquisitions to increase the signal to noise ratio (SNR) of the acquired images, and 2) improving the consistency of respiratory position between two oxygen states. We also demonstrate that these two improvements give us higher temporal SNR which is a measure of sensitivity in quantitative MRI.

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

Join Here