multiMap: A Gradient Spoiled Sequence for Simultaneously Measuring B1+, B0, T1/M0, T2, T2*, and Fat Fraction of a Slice

TL;DR

multiMap is a novel MRI sequence that enables simultaneous, efficient measurement of multiple tissue parameters such as B1+, B0, T1, T2, T2*, and fat fraction from a single scan, improving quantitative imaging.

Contribution

It introduces a single, time-efficient MRI sequence that isolates and independently estimates multiple tissue parameters simultaneously, enhancing quantitative MRI capabilities.

Findings

Accurate parameter maps generated for phantoms, brain, and knee.

Estimates compare favorably with established techniques.

Sequence isolates cross-dependencies between parameters.

Abstract

We propose multiMap, a single scan that can generate several quantitative maps simultaneously. The sequence acquires multiple images in a time-efficient manner, which can be modeled for T_2, T2*, main- and transmit-field inhomogeneity, T_1:equilibrium magnetization, and water and fat content. The sequence is constructed so that cross-dependencies between parameters are isolated. Thus, each parameter can be estimated independently. Estimates of all parameters are shown on bottle phantoms, the brain, and the knee. The results are compared to estimates from established techniques.