Super-resolution T1 estimation: Quantitative high resolution T1 mapping from a set of low resolution T1 -weighted images with different slice orientations.
Magn Reson Med
; 77(5): 1818-1830, 2017 05.
Article
in En
| MEDLINE
| ID: mdl-27367848
ABSTRACT
PURPOSE:
Quantitative T1 mapping is a magnetic resonance imaging technique that estimates the spin-lattice relaxation time of tissues. Even though T1 mapping has a broad range of potential applications, it is not routinely used in clinical practice as accurate and precise high resolution T1 mapping requires infeasibly long acquisition times.METHOD:
To improve the trade-off between the acquisition time, signal-to-noise ratio and spatial resolution, we acquire a set of low resolution T1 -weighted images and directly estimate a high resolution T1 map by means of super-resolution reconstruction.RESULTS:
Simulation and in vivo experiments show an increased spatial resolution of the T1 map, while preserving a high signal-to-noise ratio and short scan time. Moreover, the proposed method outperforms conventional estimation in terms of root-mean-square error.CONCLUSION:
Super resolution T1 estimation enables resolution enhancement in T1 mapping with the use of standard (inversion recovery) T1 acquisition sequences. Magn Reson Med 771818-1830, 2017. © 2016 International Society for Magnetic Resonance in Medicine.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Image Processing, Computer-Assisted
/
Brain
/
Brain Mapping
/
Magnetic Resonance Imaging
Type of study:
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
Magn Reson Med
Journal subject:
DIAGNOSTICO POR IMAGEM
Year:
2017
Document type:
Article
Affiliation country:
Belgium