Systematic assessment of multi-echo dynamic susceptibility contrast MRI using a digital reference object.
Department
Neurobiology
Document Type
Article
Abstract
PURPOSE: Brain tumor dynamic susceptibility contrast (DSC) MRI is adversely impacted by T
METHODS: Using a population-based DSC-MRI digital reference object (DRO), we assessed the influence of preload dosing (no preload and full dose preload), field strength (1.5 and 3T), pulse sequence parameters (echo time, repetition time, and flip angle), and leakage correction on relative cerebral blood volume (rCBV) and flow (rCBF) accuracy. We also compared multi-echo DSC-MRI protocols with standard single-echo protocols.
RESULTS: Multi-echo DSC-MRI is highly consistent across all protocols, and multi-echo rCBV (with or without use of a preload dose) had higher accuracy than single-echo rCBV. Regression analysis showed that choice of repetition time and flip angle had minimal impact on multi-echo rCBV and rCBV, indicating the potential for significant flexibility in acquisition parameters. The echo time combination had minimal impact on rCBV, though longer echo times should be avoided, particularly at higher field strengths. Leakage correction improved rCBV accuracy in all cases. Multi-echo rCBF was less biased than single-echo rCBF, although rCBF accuracy was reduced overall relative to rCBV.
CONCLUSIONS: Multi-echo acquisitions were more robust than single-echo, essentially decoupling both repetition time and flip angle from rCBV accuracy. Multi-echo acquisitions obviate the need for preload dosing, although leakage correction to remove residual
Publication Date
1-1-2020
Publication Title
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine
ISSN
1522-2594
Volume
83
Issue
1
First Page
109
Last Page
123
PubMed ID
31400035
Digital Object Identifier (DOI)
10.1002/mrm.27914
Recommended Citation
Stokes, A.; Semmineh, Natenael B; Nespodzany, Ashley; Bell, Laura C; and Quarles, C., "Systematic assessment of multi-echo dynamic susceptibility contrast MRI using a digital reference object." (2020). Translational Neuroscience. 480.
https://scholar.barrowneuro.org/neurobiology/480