Xiufeng Li1, Subhendra N. Sarkar2,
David E. Purdy3, Robert W. Haley4, Richard W. Briggs1,4
1Radiology, UT Southwestern Medical
Center, Dallas, TX, United States; 2Radiology, Beth Israel
Deaconess Medical Center, Boston, MA, United States; 3Siemens
Healthcare, Malvern, PA, United States; 4Internal Medicine, UT
Southwestern Medical Center, Dallas, TX, United States
The
superior labeling band of FAIR can also label blood, which results in adverse
venous artifacts and an inconsistency between the single subtraction blood
flow quantification model and the experimental data. To overcome the
difficulties faced by the traditional FAIR-based PASL technique, an
asymmetric FAIR - FAIR with Active Suppression of Superior Tagging (FAIR
ASST) - was proposed and evaluated. Among various possible ways for the
suppression of FAIRs superior tagging, the method using one pre-inversion
and two post-inversion superior saturations was found to be effective and
efficient.