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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

Optimized inversion recovery sequences for quantitative T1 and magnetization transfer imaging.

Ke Li¹, Zhongliang Zu, Junzhong Xu

¹Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, Tennessee, USA. ke.li@vanderbilt.edu

Magnetic Resonance in Medicine

|July 29, 2010

Summary

This summary is machine-generated.

New inversion recovery protocols optimize imaging by varying both inversion time (t(i)) and delay (t(d)). This enhances precision for T(1) and quantitative magnetization transfer parameters, improving quantitative imaging methods.

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Area of Science:

Magnetic Resonance Imaging
Quantitative Imaging

Background:

Inversion recovery sequences are used for T(1) and quantitative magnetization transfer (MT) parameter determination.
Previous methods varied only inversion time (t(i)), using approximate fitting solutions.

Purpose of the Study:

To develop new protocols varying both t(i) and t(d) for improved T(1) and MT parameter precision.
To identify optimal acquisition schemes using Cramer-Rao lower bounds and Monte Carlo simulations.

Main Methods:

Developed new inversion recovery protocols varying both t(i) and t(d).
Employed Cramer-Rao lower bounds and Monte Carlo simulations to optimize acquisition schemes.
Validated methods using MnCl(2) samples, BSA phantoms, and in vivo imaging.

Main Results:

New protocols provide more precise T(1) and quantitative MT parameter measurements with minimal approximations.
Optimal acquisition schemes were identified and verified experimentally.
A rapid in vivo acquisition scheme was demonstrated.

Conclusions:

Optimized quantitative imaging methods offer superior T(1) and MT parameter determination compared to prior inversion recovery techniques.
The developed protocols enhance the accuracy and efficiency of quantitative MRI.