Voxel-by-voxel 4D flow MRI-based assessment of regional reverse flow in the aorta.

ABSTRACT:

Background

Complex and reverse flow in the aorta has been implicated in aneurysm development and stroke via retrograde embolization.

Purpose

To evaluate global and regional differences between standard 2D plane-based and volumetric voxel-based quantification of regional forward/reverse flow, and reverse flow fraction (RFF) in the aorta.

Study type

Retrospective.

Subjects

In all, 35 subjects: 10 healthy controls (age: 57 ± 7 years, nine male), nine patients without aortic valve regurgitation (AR) (age: 63 ± 10 years, seven male), six patients with mild AR (age: 66 ± 6 years, five male), and 10 with moderate or severe AR (age: 60 ± 16 years, eight male).

Field strength/sequence

4D flow MRI (3T and 1.5T) was employed to acquire 3D blood flow velocities with

SUBMITTER: Shen X 

PROVIDER: S-EPMC5857433 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature