Improved field-mapping and artifact correction in multispectral imaging.

ABSTRACT:

Purpose

To develop a method for improved B₀ field-map estimation, deblurring, and image combination for multispectral imaging near metal.

Methods

A goodness-of-fit field-map estimation technique is proposed that uses only the multispectral imaging (MSI) data to estimate the field map. Using the improved field map, a novel deblurring technique is proposed that also employs a new image combination scheme to reduce the effects of noise and other residual MSI artifacts. The proposed field-map estimation and deblurring techniques are compared to the current methods in phantoms and/or in vivo from subjects with knee, hip, and spinal metallic implants.

Results

Phantom experiments validate that the goodness-of-fit field-map estimation is less sensitive to noise and

SUBMITTER: Quist B 

PROVIDER: S-EPMC5796784 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature