Investigation of the influence of B₀ drift on the performance of the PLANET method and an algorithm for drift correction.

ABSTRACT:

Purpose

The PLANET method was designed to simultaneously reconstruct maps of T₁ and T₂ , the off-resonance, the RF phase, and the banding free signal magnitude. The method requires a stationary B₀ field over the course of a phase-cycled balanced SSFP acquisition. In this work we investigated the influence of B₀ drift on the performance of the PLANET method for single-component and two-component signal models, and we propose a strategy for drift correction.

Methods

The complex phase-cycled balanced SSFP signal was modeled with and without frequency drift. The behavior of the signal influenced by drift was mathematically interpreted as a sum of drift-dependent displacement of the data points along an ellipse and drift-dependent rotat

SUBMITTER: Shcherbakova Y 

PROVIDER: S-EPMC6772029 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature