Compressed sensing velocity encoded phase contrast imaging: Monitoring skeletal muscle kinematics.

ABSTRACT:

Purpose

This study implements a compressed sensing (CS) 3-directional velocity encoded phase contrast (VE-PC) imaging for studying skeletal muscle kinematics within 40 s.

Methods

Independent variable density random sampling in the phase encoding direction for each temporal frame was implemented for various combinations of CS-factors and views per segment. CS reconstruction was performed for the combined multicoil, temporal datasets using temporal Fourier transform followed by temporal principal component analysis sparsifying transformations. The method was tested on a flow phantom and in vivo, on velocity and strain rate of the medial gastrocnemius muscle of 11 subjects performing isometric contractions.

Results

For the flow phantom, velocity from 8 undersampled seque

SUBMITTER: Malis V 

PROVIDER: S-EPMC8046431 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature