Assessment of ultrashort echo time (UTE) T₂* mapping at 3T for the whole knee: repeatability, the effects of fat suppression, and knee position.

ABSTRACT:

Background

Knee tissues such as tendon, ligament and meniscus have short T₂* relaxation times and tend to show little to no signal in conventional magnetic resonance acquisitions. An ultrashort echo time (UTE) technique offers a unique tool to probe fast-decaying signals in these tissues. Clinically relevant factors should be evaluated to quantify the sensitivity needed to distinguish diseased from control tissues. Therefore, the objectives of this study were to (I) quantify the repeatability of UTE-T₂* relaxation time values, and (II) evaluate the effects of fat suppression and (III) knee positioning on UTE-T₂* relaxation time quantification.

Methods

A dual-echo, three-dimensional center-out radially sampling UTE and conventional gradient ec

SUBMITTER: Wu Z 

PROVIDER: S-EPMC10722028 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature