Short T₂ imaging using a 3D double adiabatic inversion recovery prepared ultrashort echo time cones (3D DIR-UTE-Cones) sequence.

ABSTRACT:

Purpose

To investigate high contrast imaging of short T₂ tissues with a three-dimensional double adiabatic inversion recovery prepared ultrashort echo time Cones (3D DIR-UTE-Cones) sequence.

Methods

The sequence used two sequential adiabatic inversion pulses to suppress signals from long T₂ tissues, followed by multispoke UTE acquisition to detect signals from short T₂ tissues. The two adiabatic inversion pulses are identical with a center frequency located at the water peak, but the spectral width is broad enough to cover both water and fat frequencies. The feasibility of this technique was demonstrated through numerical simulation and phantom studies. Finally, DIR-UTE-Cones was applied to three healthy volunteers to image cortical bone, pat

SUBMITTER: Ma YJ 

PROVIDER: S-EPMC5821562 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature