EurekaMag
+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Super-resolved enhancing and edge deghosting (SEED) for spatiotemporally encoded single-shot MRI


Super-resolved enhancing and edge deghosting (SEED) for spatiotemporally encoded single-shot MRI



Medical Image Analysis 23(1): 1-14



ISSN/ISBN: 1361-8415

PMID: 25910683

DOI: 10.1016/j.media.2015.03.004

Spatiotemporally encoded (SPEN) single-shot MRI is an ultrafast MRI technique proposed recently, which utilizes quadratic rather than linear phase profile to extract the spatial information. Compared to the echo planar imaging (EPI), this technique has great advantages in resisting field inhomogeneity and chemical shift effects. Super-resolved (SR) reconstruction is adopted to compensate the inherent low resolution of SPEN images. Due to insufficient sampling rate, the SR image is challenged by aliasing artifacts and edge ghosts. The existing SR algorithms always compromise in spatial resolution to suppress these undesirable artifacts. In this paper, we proposed a novel SR algorithm termed super-resolved enhancing and edge deghosting (SEED). Different from artifacts suppression methods, our algorithm aims at exploiting the relationship between aliasing artifacts and real signal. Based on this relationship, the aliasing artifacts can be eliminated without spatial resolution loss. According to the trait of edge ghosts, finite differences and high-pass filter are employed to extract the prior knowledge of edge ghosts. By combining the prior knowledge with compressed sensing, our algorithm can efficiently reduce the edge ghosts. The robustness of SEED is demonstrated by experiments under various situations. The results indicate that the SEED can provide better spatial resolution compared to state-of-the-art SR reconstruction algorithms in SPEN MRI. Theoretical analysis and experimental results also show that the SR images reconstructed by SEED have better spatial resolution than the images obtained with conventional k-space encoding methods under similar experimental condition.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 058933909

Download citation: RISBibTeXText

Related references

Super-resolved water/fat image reconstruction based on single-shot spatiotemporally encoded MRI. Journal of Magnetic Resonance 314: 106736, 2020

Variable density sampling and non-Cartesian super-resolved reconstruction for spatiotemporally encoded single-shot MRI. Journal of Magnetic Resonance 272: 1-9, 2016

Parametric analysis of the spatial resolution and signal-to-noise ratio in super-resolved spatiotemporally encoded (SPEN) MRI. Magnetic Resonance in Medicine 72(2): 418-429, 2014

Referenceless one-dimensional Nyquist ghost correction in multicoil single-shot spatiotemporally encoded MRI. Magnetic Resonance Imaging 37: 222-233, 2017

An aliasing artifacts reducing approach with random undersampling for spatiotemporally encoded single-shot MRI. Journal of Magnetic Resonance 237: 115-124, 2013

Reference-free unwarping of single-shot spatiotemporally encoded MRI using asymmetric self-refocused echoes acquisition. Journal of Magnetic Resonance 254: 1-9, 2015

Imaging with referenceless distortion correction and flexible regions of interest using single-shot biaxial spatiotemporally encoded MRI. Neuroimage 105: 93-111, 2015

Super-resolved spatially encoded single-scan 2D MRI. Magnetic Resonance in Medicine 63(6): 1594-1600, 2010

Fully refocused multi-shot spatiotemporally encoded MRI: robust imaging in the presence of metallic implants. Magma 25(6): 433-442, 2012

Single snap-shot double field optical zoom and axially super resolved imaging system. Photonics in Multimedia. Conference (2006): 61960C.1-61960C.10, 2006

Spatiotemporally Super-Resolved Volumetric Traction Force Microscopy. Nano Letters 19(7): 4427-4434, 2019

Single Turnover at Molecular Polymerization Catalysts Reveals Spatiotemporally Resolved Reactions. Angewandte Chemie 56(44): 13772-13775, 2017

Multi-MHz laser-scanning single-cell fluorescence microscopy by spatiotemporally encoded virtual source array. Biomedical Optics Express 8(9): 4160-4171, 2017

Super-resolved phase measurements at the shot noise limit by parity measurement. Optics Express 22(10): 11945-11953, 2014

Water-fat separation from a single spatiotemporally encoded echo based on nominal k-space peaking and joint regularized estimation. Magnetic Resonance in Medicine 73(4): 1441-1449, 2015