Improving ungated steady-state cardiac perfusion using transition bands.

ABSTRACT:

Purpose

Although gated first-pass contrast-enhanced sequences are the clinical standard for cardiovascular MR perfusion, some patient conditions necessitate using ungated steady-state sequences. However, through-plane cardiac motion and blood flow into the left ventricle can disrupt the magnetization steady state of the tissue, and perfusion quantification based on a steady-state assumption will contain errors. The tissue magnetization steady-state disruption can be eliminated with a proposed sequence modification that simultaneously excites transition bands with no change in the sequence resolution or timing parameters.

Theory and methods

The proposed sequence modification simultaneously excites two transition bands adjacent to the imaged region. The transition bands experi

SUBMITTER: Mendes JK 

PROVIDER: S-EPMC12021336 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature