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Simultaneous multislice triple-echo steady-state (SMS-TESS) T1, T2, PD, and off-resonance mapping in the human brain


Heule, Rahel; Celicanin, Zarko; Kozerke, Sebastian; Bieri, Oliver (2018). Simultaneous multislice triple-echo steady-state (SMS-TESS) T1, T2, PD, and off-resonance mapping in the human brain. Magnetic Resonance in Medicine, 80(3):1088-1100.

Abstract

Purpose
To investigate the ability of simultaneous multislice triple‐echo steady‐state (SMS‐TESS) imaging to provide quantitative maps of multiple tissue parameters, i.e., longitudinal and transverse relaxation times (T1 and T2), proton density (PD), and off‐resonance (ΔB0), in the human brain at 3T from a single scan.
Methods
TESS acquisitions were performed in 2D mode to reduce motion sensitivity and accelerated by an SMS excitation scheme (CAIPIRINHA) with SENSE reconstruction. SMS‐acceleration factors (R) of 2 and 4 were evaluated. The in vitro and in vivo validation process included standard reference scans to analyze the accuracy of T1, T2, and ΔB0 estimates, as well as single‐slice TESS measurements.
Results
For R = 2, the quantification of T1, T2, PD, and ΔB0 was overall reliable with marginal noise enhancement. T1 and T2 values were in good agreement with the reference measurements and single‐slice TESS. For R = 4, the agreement of ΔB0 with the standard reference was excellent and the determination of T1, T2, and PD was reproducible; however, increased variations in T1 and T2 values with respect to single‐slice TESS were observed.
Conclusion
SMS‐TESS has shown potential to offer rapid simultaneous T1, T2, PD, and ΔB0 mapping of human brain tissues.

Abstract

Purpose
To investigate the ability of simultaneous multislice triple‐echo steady‐state (SMS‐TESS) imaging to provide quantitative maps of multiple tissue parameters, i.e., longitudinal and transverse relaxation times (T1 and T2), proton density (PD), and off‐resonance (ΔB0), in the human brain at 3T from a single scan.
Methods
TESS acquisitions were performed in 2D mode to reduce motion sensitivity and accelerated by an SMS excitation scheme (CAIPIRINHA) with SENSE reconstruction. SMS‐acceleration factors (R) of 2 and 4 were evaluated. The in vitro and in vivo validation process included standard reference scans to analyze the accuracy of T1, T2, and ΔB0 estimates, as well as single‐slice TESS measurements.
Results
For R = 2, the quantification of T1, T2, PD, and ΔB0 was overall reliable with marginal noise enhancement. T1 and T2 values were in good agreement with the reference measurements and single‐slice TESS. For R = 4, the agreement of ΔB0 with the standard reference was excellent and the determination of T1, T2, and PD was reproducible; however, increased variations in T1 and T2 values with respect to single‐slice TESS were observed.
Conclusion
SMS‐TESS has shown potential to offer rapid simultaneous T1, T2, PD, and ΔB0 mapping of human brain tissues.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Engineering
Dewey Decimal Classification:170 Ethics
610 Medicine & health
Uncontrolled Keywords:Radiology Nuclear Medicine and imaging
Language:English
Date:1 September 2018
Deposited On:06 Mar 2019 13:06
Last Modified:06 Mar 2019 13:06
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0740-3194
OA Status:Closed
Publisher DOI:https://doi.org/10.1002/mrm.27126
PubMed ID:29468727

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