Retrospective Camera-Based Respiratory Gating in Clinical Whole-Heart 4D Flow MRI.

ABSTRACT:

Background

Respiratory gating is generally recommended in 4D flow MRI of the heart to avoid blurring and motion artifacts. Recently, a novel automated contact-less camera-based respiratory motion sensor has been introduced.

Purpose

To compare camera-based respiratory gating (CAM) with liver-lung-navigator-based gating (NAV) and no gating (NO) for whole-heart 4D flow MRI.

Study type

Retrospective.

Subjects

Thirty two patients with a spectrum of cardiovascular diseases.

Field strength/sequence

A 3T, 3D-cine spoiled-gradient-echo-T1-weighted-sequence with flow-encoding in three spatial directions.

Assessment

Respiratory phases were derived and compared against each other by cross-correlation. Three radiologists/cardiologist scored images reconstructe

SUBMITTER: Gottwald LM 

PROVIDER: S-EPMC8359364 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature