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Accelerated magnetic resonance fingerprinting using soft-weighted key-hole mrf-soho
- Source :
- PLOS ONE, Artículos CONICYT, CONICYT Chile, instacron:CONICYT, PLoS ONE, PLoS ONE, Vol 13, Iss 8, p e0201808 (2018), Lima da Cruz, G J, Schneider, T, Bruijnen, T, Gaspar, A S, Botnar, R M & Prieto Vasquez, C 2018, ' Accelerated magnetic resonance fingerprinting using soft-weighted key-hole (MRF-SOHO) ', PLoS ONE, vol. 13, no. 8, e0201808 . https://doi.org/10.1371/journal.pone.0201808
- Publication Year :
- 2018
-
Abstract
- OBJECT: To develop a novel approach for highly accelerated Magnetic Resonance Fingerprinting (MRF) acquisition.MATERIALS AND METHODS: The proposed method combines parallel imaging, soft-gating and key-hole approaches to highly accelerate MRF acquisition. Slowly varying flip angles (FA), commonly used during MRF acquisition, lead to a smooth change in the signal contrast of consecutive time-point images. This assumption enables sharing of high frequency data between different time-points, similar to what is done in some dynamic MR imaging methods such as key-hole. The proposed approach exploits this information using a SOft-weighted key-HOle (MRF-SOHO) reconstruction to achieve high acceleration factors and/or increased resolution without compromising image quality or increasing scan time. MRF-SOHO was validated on a standard T1/T2 phantom and in in-vivo brain acquisitions reconstructing T1, T2 and proton density parametric maps.RESULTS: Accelerated MRF-SOHO using less data per time-point and less time-point images enabled a considerable reduction in scan time (up to 4.6x), while obtaining similar T1 and T2 accuracy and precision when compared to zero-filled MRF reconstruction. For the same number of spokes and time-points, the proposed method yielded an enhanced performance in quantifying parameters than the zero-filled MRF reconstruction, which was verified with 2, 1 and 0.7 (sub-millimetre) resolutions.CONCLUSION: The proposed MRF-SOHO enabled a 4.6x scan time reduction for an in-plane spatial resolution of 2x2 mm2 when compared to zero-filled MRF and enabled sub-millimetric (0.7x0.7 mm2) resolution MRF.
- Subjects :
- Central Nervous System
Employment
Computer and Information Sciences
Time Factors
Physiology
Imaging Techniques
Economics
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
accelerated MRF
lcsh:Medicine
Social Sciences
soft-weighting
Research and Analysis Methods
Nervous System
Diagnostic Radiology
Pattern Recognition, Automated
Mathematical and Statistical Techniques
Diagnostic Medicine
Medicine and Health Sciences
Image Processing, Computer-Assisted
Humans
Magnetic Resonance
lcsh:Science
Cerebrospinal Fluid
MR fingerprinting
Fourier Analysis
Phantoms, Imaging
Physics
Radiology and Imaging
lcsh:R
Magnetism
Biology and Life Sciences
Brain
Condensed Matter Physics
Magnetic Resonance Imaging
Body Fluids
Data Acquisition
Labor Economics
Physical Sciences
lcsh:Q
Anatomy
key-hole
Research Article
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- PLOS ONE, Artículos CONICYT, CONICYT Chile, instacron:CONICYT, PLoS ONE, PLoS ONE, Vol 13, Iss 8, p e0201808 (2018), Lima da Cruz, G J, Schneider, T, Bruijnen, T, Gaspar, A S, Botnar, R M & Prieto Vasquez, C 2018, ' Accelerated magnetic resonance fingerprinting using soft-weighted key-hole (MRF-SOHO) ', PLoS ONE, vol. 13, no. 8, e0201808 . https://doi.org/10.1371/journal.pone.0201808
- Accession number :
- edsair.pmid.dedup....c1413769d451516642c11346ae557699