Results 31 to 40 of about 62,499 (274)
MRI receiver frequency response as a contributor to Nyquist ghosting in echo planar imaging [PDF]
Journal of Magnetic Resonance Imaging, 2005 AbstractPurposeTo study the frequency response characteristic of the MRI signal receiver system as a contributing factor to the formation of Nyquist ghosting in echo‐planar imaging (EPI).Materials and MethodsExperimental work was undertaken on a 1.5 T system.
Ioannis, Delakis +2 more
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Improved Row-Column-Addressed Array Imaging by Leveraging Ghost Echoes
2023 IEEE International Ultrasonics Symposium (IUS), 2023 Among various choices of 2-D ultrasound transducer arrays, the row-column-addressed (RCA) 2-D array has shown its promise for 3-D imaging. However, RCA suffers from notable edge effects and thus receives ghost echoes, which result in ghost artifacts showing in the volumetric image.
Mei, Chung-Shiang, Li, Meng-Lin
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Two-Dimensional Spatial Coherence for Ultrasonic DMAS Beamforming in Multi-Angle Plane-Wave Imaging
Applied Sciences, 2019 Ultrasonic multi-angle plane-wave (PW) coherent compounding relies on delay-and-sum (DAS) beamforming of two-dimensional (2D) echo matrix in both the dimensions PW transmit angle and receiving channel to construct each image pixel.
Che-Chou Shen, Pei-Ying Hsieh
doaj +1 more source
Hong Kong echoes across English ghost lands: A decolonizing of English-language poetry
Journal of Postcolonial Writing, 2023 his article focuses on three women poets who deploy a Hong Kong Chinese imaginary, an imaginarium filled with memories, popular cultural references, fragments of Cantonese, and isolated Chinese characters. Jennifer Lee Tsai was born in the UK of Hong Kong immigrant parents, while Jennifer Wong migrated from Hong Kong to the UK first to study and then ...
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British Educational Research Journal, EarlyView., 2023 Abstract Early childhood has increasingly been acknowledged as a vital time for all children. Inclusive and quality education is part of the United Nations Sustainable Development Goals, with the further specification that all children have access to quality pre‐primary education.
Laura H. V. Wright +8 more
wiley +1 more source
'Under a shower of bird-notes': R. S. Thomas's elegiac poems for Elsi [PDF]
, 2014 It has been customary to see elegies by male poets as exceptional rather than typical poems. W. H. Auden wrote that ‘Poets seem to be more generally successful at writing elegies than at any other literary genre’.
Kennedy, David
core +1 more source
k-Space Deep Learning for Reference-free EPI Ghost Correction
, 2019 Nyquist ghost artifacts in EPI are originated from phase mismatch between the even and odd echoes. However, conventional correction methods using reference scans often produce erroneous results especially in high-field MRI due to the non-linear and time ...
Han, Yoseob +4 more
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Simple algorithm for the correction of MRI image artefacts due to random phase fluctuations [PDF]
, 2017 Grant support: This work was supported by EPSRC [grant numbers EP/E036775/1, EP/K020293/1] and received funding from the European Union's Horizon 2020 research and innovation programme [grant agreement No 668119, project “IDentIFY”]Peer reviewedPublisher
Broche, Lionel M. +3 more
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Booming clangs and whispering ghosts: Attending to the reflexive echoes in IPA research
Qualitative Research in Psychology, 2018 In this paper, we propose that reflexivity can be revealed through a deliberate adjunct to the IPA process. This adjunct, which we refer to as ‘echoes’, is a mixture of the participant’s and researcher’s words and experiences resonating with each other during the research process.
Goldspink, Sally, Engward, Hilary
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Analysis of 70° Ghost Echo of Bolt Hole in High-speed Rail Flaw Detection Ultrasonic Examination
机车电传动, 2021 In the detection process of high-speed rail flaw by ultrasonic flaw, there are some abnormal echoes in rail head near the bolt holes in B scan sometimes, however, they are not echoes from defects but ghost echoes actually.
Pin WANG +3 more
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