Keywords: Arterial Spin Labelling, Arterial spin labelling, Pseudo labeling, WASPI, Acoustic Noise
Motivation: ASL has been used in pediatric perfusion imaging and resting-state fMRI studies. However, the recommended pCASL sequences generate acoustic noise because of the maximum slew rate employed in the labeling and acquisition parts.
Goal(s): To develop a pCASL sequence with reduced acoustic noise.
Approach: Paired triangle-shape gradients without rephasing gradients was proposed to provide pseudo continuous arterial labeling and the WASPI readout, instead of GRASE, was optimized for ASL acquisition.
Results: The proposed quiet pCASL sequence reduced acoustic noise by 47% in the labeling part and 96% in the acquisition part while maintaining competitive image quality compared to conventional pCASL.
Impact: The proposed quiet ASL provided a novel approach to label blood. It may improve patients experience and have a great potential in resting state fMRI studies.
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