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Full-Text Articles in Medical Specialties
Bssfp Elliptical Signal Model With Grappa Parallel Imaging, Grayson Tarbox, Joseph Valentine, Meredith Taylor, Neal Bangerter
Bssfp Elliptical Signal Model With Grappa Parallel Imaging, Grayson Tarbox, Joseph Valentine, Meredith Taylor, Neal Bangerter
Biomedical Engineering Western Regional Conference
In magnetic resonance imaging, balanced steady-state free precession acquisition using the elliptical signal model geometrical solution can be combined with a GRAPPA parallel imaging reconstruction that preserves phase information to shorten scan times.
Difference Image Ultra-Short Echo Time T2* Mapping Using A 3d Cones Trajectory, Amin Nazaran, Grayson Tarbox, Randy Hartley, Neal Bangerter
Difference Image Ultra-Short Echo Time T2* Mapping Using A 3d Cones Trajectory, Amin Nazaran, Grayson Tarbox, Randy Hartley, Neal Bangerter
Biomedical Engineering Western Regional Conference
This study introduces a methodology for detecting subtle variations in tissues with very rapid T2* decay through a difference image ultra-short T2* mapping technique using a 3D cones k-space trajectory. The new method is demonstrated in both a normal and surgically repaired Achilles tendon. The resulting UTE images are differenced and T2* values were calculated using a mono-exponential least squares fit on a voxel by voxel basis. The ultrashort T2* maps yield very consistent short T2* values in healthy tendon of 0.3-0.5 ms, while notable variations and elevations of T2* values are observed in surgically repaired tendon.