Unknown

Dataset Information

0

A minimum-phase Shinnar-Le Roux spectral-spatial excitation RF pulse for simultaneous water and lipid suppression in 1H-MRSI of body extremities.


ABSTRACT:

Purpose

To develop a spectral-spatial (SPSP) excitation RF pulse for simultaneous water and lipid suppression in proton (1H) magnetic resonance spectroscopic imaging (MRSI) of body extremities.

Methods

An SPSP excitation pulse is designed to excite Creatine (Cr) and Choline (Cho) metabolite signals while suppressing the overwhelming water and lipid signals. The SPSP pulse is designed using a recently proposed multidimensional Shinnar-Le Roux (SLR) RF pulse design method. A minimum-phase spectral selectivity profile is used to minimize signal loss from T2 decay.

Results

The performance of the SPSP pulse is evaluated via Bloch equation simulations and phantom experiments. The feasibility of the proposed method is demonstrated using three-dimensional, short repetition-time, free induction decay-based 1H-MRSI in the thigh muscle at 3T.

Conclusion

The proposed SPSP excitation pulse is useful for simultaneous water and lipid suppression. The proposed method enables new applications of high-resolution 1H-MRSI in body extremities.

SUBMITTER: Han PK 

PROVIDER: S-EPMC5709164 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications

A minimum-phase Shinnar-Le Roux spectral-spatial excitation RF pulse for simultaneous water and lipid suppression in <sup>1</sup>H-MRSI of body extremities.

Han Paul Kyu PK   Ma Chao C   Deng Kexin K   Hu Shuang S   Jee Kyung-Wook KW   Ying Kui K   Chen Yen-Lin YL   El Fakhri Georges G  

Magnetic resonance imaging 20170914


<h4>Purpose</h4>To develop a spectral-spatial (SPSP) excitation RF pulse for simultaneous water and lipid suppression in proton (<sup>1</sup>H) magnetic resonance spectroscopic imaging (MRSI) of body extremities.<h4>Methods</h4>An SPSP excitation pulse is designed to excite Creatine (Cr) and Choline (Cho) metabolite signals while suppressing the overwhelming water and lipid signals. The SPSP pulse is designed using a recently proposed multidimensional Shinnar-Le Roux (SLR) RF pulse design method  ...[more]

Similar Datasets

| S-EPMC5040611 | biostudies-literature
| S-EPMC9299067 | biostudies-literature
| S-EPMC4792784 | biostudies-literature
| S-EPMC9328386 | biostudies-literature
| S-EPMC10330446 | biostudies-literature
| S-EPMC10786267 | biostudies-literature
| S-EPMC5843524 | biostudies-literature
| S-EPMC5697703 | biostudies-literature
| S-EPMC11602691 | biostudies-literature
| S-EPMC6334175 | biostudies-literature