Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Kelly C. McPhee"'
Publikováno v:
NeuroImage, Vol 237, Iss , Pp 118116- (2021)
T2 quantification is commonly attempted by applying an exponential fit to proton density (PD) and transverse relaxation (T2)-weighted fast spin echo (FSE) images. However, inter-site studies have noted systematic differences between vendors in T2 map
Externí odkaz:
https://doaj.org/article/dc25ca09546e400f8c97f20828968ea5
Publikováno v:
Magnetic Resonance in Medicine. 87:2145-2160
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eacaf46222212ad79426aa3db110fb3a
https://doi.org/10.1002/mrm.29113
https://doi.org/10.1002/mrm.29113
Publikováno v:
Magnetic resonance in medicine. 87(5)
Three-dimensional fast spin-echo (FSE) sequences commonly use very long echo trains (64 echoes) and severely reduced refocusing angles. They are increasingly used in brain exams due to high, isotropic resolution and reasonable scan time when using lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::30ba8a3f1c44e4f88c874de6ced9d589
https://pubmed.ncbi.nlm.nih.gov/34894641
https://pubmed.ncbi.nlm.nih.gov/34894641
Autor:
Alan H. Wilman, Kelly C. McPhee
Publikováno v:
Magnetic Resonance in Medicine. 81:2052-2063
Purpose To extract longitudinal and transverse (T1 and T2 ) relaxation maps from standard MRI methods. Methods Bloch simulations were used to model relative signal amplitudes from standard turbo spin-echo sequences: proton density weighted, T2 -weigh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b13b8c9d1937fdad18309b7989855f5d
https://doi.org/10.1002/mrm.27495
https://doi.org/10.1002/mrm.27495
Autor:
Alan H. Wilman, Kelly C. McPhee
Publikováno v:
Journal of Magnetic Resonance Imaging. 48:1432-1440
BACKGROUND Exponential fitting of multiecho spin echo sequences with skipped echoes is still commonly used for quantification of transverse relaxation (T2 ). PURPOSE To examine the efficacy of skipped echo methods for T2 quantification against comput
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fec3351a1eb0ee3d4cd93868707e314c
https://doi.org/10.1002/jmri.26052
https://doi.org/10.1002/jmri.26052
Publikováno v:
Magnetic Resonance Imaging. 37:21-26
Objective To determine accurate quantitative transverse relaxation times (T2) using retrospective clinical images and apply it to examine 7-year changes in multiple sclerosis (MS) brain. Methods A method for T2 mapping from retrospective proton densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec042c32ccab42d7dd0a109a20ee7ae1
https://doi.org/10.1016/j.mri.2016.11.007
https://doi.org/10.1016/j.mri.2016.11.007
Autor:
Alan H. Wilman, Kelly C. McPhee
Publikováno v:
Magnetic Resonance in Medicine. 77:2057-2065
PURPOSE To evaluate transverse relaxation (T2) and flip angle maps derived from signal pathway modeling of multiple spin echoes using simultaneous or independent T2 and flip angle fitting. METHODS We examined different approaches to indirect and stim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21e82136c2e0d656fd352f141d4adaa7
https://doi.org/10.1002/mrm.26285
https://doi.org/10.1002/mrm.26285
Autor:
Kelly C, McPhee, Alan H, Wilman
Publikováno v:
Magnetic resonance in medicine. 81(3)
To extract longitudinal and transverse (TBloch simulations were used to model relative signal amplitudes from standard turbo spin-echo sequences: proton density weighted, TA region analysis showed that relaxation maps computed from single-slice proto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::919f6441591e3ddc89a126338f649d95
https://pubmed.ncbi.nlm.nih.gov/30338866
https://pubmed.ncbi.nlm.nih.gov/30338866
Autor:
Kelly C, McPhee, Alan H, Wilman
Publikováno v:
Journal of magnetic resonance imaging : JMRI. 48(5)
Exponential fitting of multiecho spin echo sequences with skipped echoes is still commonly used for quantification of transverse relaxation (TTo examine the efficacy of skipped echo methods for TProspective comparison of methods.Eight volunteers were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b8ac58903bd20c0dd8e28682deff073f
https://pubmed.ncbi.nlm.nih.gov/29687931
https://pubmed.ncbi.nlm.nih.gov/29687931
T2 quantification from only proton density and T2-weighted MRI by modelling actual refocusing angles
Autor:
Kelly C. McPhee, Alan H. Wilman
Publikováno v:
NeuroImage. 118:642-650
Proton density and transverse relaxation (T2)-weighted fast spin echo images are frequently acquired. T2 quantification is commonly performed by applying an exponential fit to these two images, despite recent evidence that an exponential fit is insuf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::208975b431d9be76b8799e6e1c3a3264
https://doi.org/10.1016/j.neuroimage.2015.05.079
https://doi.org/10.1016/j.neuroimage.2015.05.079