"Push-button" noncontrast MR angiography using balanced T₁ relaxation-enhanced steady-state (bT1RESS).

ABSTRACT:

Purpose

We introduce a MR imaging technique, balanced T₁ relaxation-enhanced steady-state (bT1RESS), that provides the unique capability to efficiently impart a flexible amount of T₁ weighting to a balanced steady-state free precession acquisition using periodically applied contrast-modifying RF pulses. Leveraging this capability to suppress the signal intensity of background tissues, we implemented a 3D noncontrast MR angiography technique that continuously acquires thin overlapping 3D volumes and tested it for evaluation of the peripheral arteries.

Methods

bT1RESS used a fast interrupted steady-state readout with a 45° cslab-selective ontrast-modifying RF pulse applied at 262 msec intervals. A series of 16.4-mm thick overlapping 3D volumes was acquire

SUBMITTER: Edelman RR 

PROVIDER: S-EPMC7718305 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature