Two-parametric prescan calibration of gradient-induced sampling errors for rosette MRI.

ABSTRACT:

Purpose

The aim of this study was to develop a simple, robust, and easy-to-use calibration procedure for correcting misalignments in rosette MRI k-space sampling, with the objective of producing images with minimal artifacts.

Methods

Quick automatic calibration scans were proposed for the beginning of the measurement to collect information on the time course of the rosette acquisition trajectory. A two-parameter model was devised to match the measured time-varying readout gradient delays and approximate the actual rosette sampling trajectory. The proposed calibration approach was implemented, and performance assessment was conducted on both phantoms and human subjects.

Results

The fidelity of phantom and in vivo images exhibited significant improvement compared with u

SUBMITTER: Latta P 

PROVIDER: S-EPMC11680729 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature