We propose a compressed sensing reconstruction method for highly accelerated subtractive non-contrast-enhanced MRA, based on complex subtraction in k-space. This method applies intensity difference correction between bright- and dark-blood image sets before reconstruction and uses a phase correction procedure to remove background artefacts caused by complex subtraction. Experimental results demonstrate improved background tissue suppression. Compared with magnitude subtraction approaches, the proposed method achieved higher reconstruction accuracy at large acceleration factors, permitting the use of higher acceleration factors without unacceptable loss of image quality.
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