Super-resolution methods in MRI: Can they improve the trade-off between resolution, signal-to-noise ratio, and acquisition time?

Improving the resolution in magnetic resonance imaging comes at the cost of either lower signal‐to‐noise ratio, longer acquisition time or both. This study investigates whether so‐called super‐resolution reconstruction methods can increase the resolution in the slice selection direction and, as such...

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Vydané v:Magnetic resonance in medicine Ročník 68; číslo 6; s. 1983 - 1993
Hlavní autori: Plenge, Esben, Poot, Dirk H. J., Bernsen, Monique, Kotek, Gyula, Houston, Gavin, Wielopolski, Piotr, van der Weerd, Louise, Niessen, Wiro J., Meijering, Erik
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.12.2012
Wiley Subscription Services, Inc
Predmet:
Algorithms
Image Enhancement - instrumentation
Image Enhancement - methods
Image Interpretation, Computer-Assisted - instrumentation
Image Interpretation, Computer-Assisted - methods
image quality
magnetic resonance imaging
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Phantoms, Imaging
reconstruction
Reproducibility of Results
Sensitivity and Specificity
Signal-To-Noise Ratio
super-resolution
ISSN:0740-3194, 1522-2594, 1522-2594
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Popis
Shrnutí:Improving the resolution in magnetic resonance imaging comes at the cost of either lower signal‐to‐noise ratio, longer acquisition time or both. This study investigates whether so‐called super‐resolution reconstruction methods can increase the resolution in the slice selection direction and, as such, are a viable alternative to direct high‐resolution acquisition in terms of the signal‐to‐noise ratio and acquisition time trade‐offs. The performance of six super‐resolution reconstruction methods and direct high‐resolution acquisitions was compared with respect to these trade‐offs. The methods are based on iterative back‐projection, algebraic reconstruction, and regularized least squares. The algorithms were applied to low‐resolution data sets within which the images were rotated relative to each other. Quantitative experiments involved a computational phantom and a physical phantom containing structures of known dimensions. To visually validate the quantitative evaluations, qualitative experiments were performed, in which images of three different subjects (a phantom, an ex vivo rat knee, and a postmortem mouse) were acquired with different magnetic resonance imaging scanners. The results show that super‐resolution reconstruction can indeed improve the resolution, signal‐to‐noise ratio and acquisition time trade‐offs compared with direct high‐resolution acquisition. Magn Reson Med, 2012. © 2012 Wiley Periodicals, Inc.
Bibliografia:istex:98C7018B1AF1EE9583A9BEF8E4266A696AD00CFB
ArticleID:MRM24187
Medical Delta (HST-Klein project), European Commission in the Seventh Framework Programme (ENCITE project)
ark:/67375/WNG-VR4LH6N7-P
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SourceType-Scholarly Journals-1
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ISSN:0740-3194
1522-2594
1522-2594
DOI:10.1002/mrm.24187