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.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords