Radial streak artifact reduction using phased array beamforming.

ABSTRACT:

Purpose

A new method for streak artifact reduction in radial MRI based on phased array filtering.

Theory

Radial imaging in applications that require large fields-of-view can be susceptible to streaking artifacts due to gradient nonlinearities. Coil removal methods prune the coils contributing the most to streaking artifacts at the expense of signal loss. Phased array beamforming is a form of spatial filtering used to suppress unwanted signals. The proposed method uses interference covariance generated from the streaking artifact samples which are manually extracted with phased array beamforming to suppress streaking in the images.

Methods

The performance of the proposed method was evaluated on abdomen radial fast spin echo images acquired on a 1.5T Siemens scanner and

SUBMITTER: Mandava S 

PROVIDER: S-EPMC10188278 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature