Pilot tone navigation for respiratory and cardiac motion-resolved free-running 5D flow MRI.

ABSTRACT:

Purpose

In this work, we integrated the pilot tone (PT) navigation system into a reconstruction framework for respiratory and cardiac motion-resolved 5D flow. We tested the hypotheses that PT would provide equivalent respiratory curves, cardiac triggers, and corresponding flow measurements to a previously established self-gating (SG) technique while being independent from changes to the acquisition parameters.

Methods

Fifteen volunteers and 9 patients were scanned with a free-running 5D flow sequence, with PT integrated. Respiratory curves and cardiac triggers from PT and SG were compared across all subjects. Flow measurements from 5D flow reconstructions using both PT and SG were compared to each other and to a reference electrocardiogram-gated and respiratory triggered 4D

SUBMITTER: Falcao MBL 

PROVIDER: S-EPMC8627452 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature