J
Jonathan D. Thiessen
Researcher at University of Western Ontario
Publications - 65
Citations - 804
Jonathan D. Thiessen is an academic researcher from University of Western Ontario. The author has contributed to research in topics: Positron emission tomography & Medicine. The author has an hindex of 16, co-authored 57 publications receiving 619 citations. Previous affiliations of Jonathan D. Thiessen include University of Manitoba & National Research Council.
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Journal ArticleDOI
Quantitative MRI and ultrastructural examination of the cuprizone mouse model of demyelination
Jonathan D. Thiessen,Yanbo Zhang,Yanbo Zhang,Handi Zhang,Lingyan Wang,Richard Buist,Marc R. Del Bigio,Jiming Kong,Xin-Min Li,Melanie Martin,Melanie Martin +10 more
TL;DR: Of the calculated MRI metrics, ƒ was the strongest indicator of myelin content, while longitudinal relaxation rates and diffusivity measurements were the strongest indicators of changes in tissue structure, like previous studies of multiple sclerosis in humans and animal models of demyelination.
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MRI T2 and T1ρ relaxation in patients at risk for knee osteoarthritis: a systematic review and meta-analysis.
Hayden F Atkinson,Trevor B. Birmingham,Rebecca F. Moyer,Rebecca F. Moyer,Daniel Yacoub,Lauren E. Kanko,Dianne Bryant,Jonathan D. Thiessen,Jonathan D. Thiessen,R. Terry Thompson,R. Terry Thompson +10 more
TL;DR: T2 and T1ρ relaxation distinguish participants at risk for knee OA from healthy controls and greater standardization of MRI methods is both warranted and required for progress towards biomarker validation.
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Performance of a PET Insert for High-Resolution Small-Animal PET/MRI at 7 Tesla.
Greg Stortz,Jonathan D. Thiessen,Jonathan D. Thiessen,D. Bishop,Muhammad Salman Khan,Piotr Kozlowski,Fabrice Retiere,Graham Schellenberg,Ehsan Shams,Xuezhu Zhang,Xuezhu Zhang,Christopher J. Thompson,Andrew L. Goertzen,Vesna Sossi +13 more
TL;DR: 18F-FDG PET/MR images of mouse and rat brains showed no signs of intermodality interference and could excellently resolve substructures within the brain.
Journal ArticleDOI
First Results From a High-Resolution Small Animal SiPM PET Insert for PET/MR Imaging at 7T
Andrew L. Goertzen,Greg Stortz,Jonathan D. Thiessen,D. Bishop,Muhammad Salman Khan,Piotr Kozlowski,Fabrice Retiere,Graham Schellenberg,Ehsan Shams,Vesna Sossi,Christopher J. Thompson +10 more
TL;DR: Testing of the PET system inside the MRI showed that the PET insert had no effect on MRI image homogeneity and only a small effect on echo planar images (EPI) signal to noise ratio (SNR) (-9%), with neither PET nor MRI images showing obvious artefacts.
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Using simultaneous PET/MRI to compare the accuracy of diagnosing frontotemporal dementia by arterial spin labelling MRI and FDG-PET.
Udunna C. Anazodo,Udunna C. Anazodo,Elizabeth Finger,Benjamin Yin Ming Kwan,William Pavlosky,William Pavlosky,James Warrington,Matthias Günther,Matthias Günther,Frank S. Prato,Frank S. Prato,Jonathan D. Thiessen,Jonathan D. Thiessen,Keith St. Lawrence,Keith St. Lawrence +14 more
TL;DR: It is demonstrated that ASL can detect similar spatial patterns of abnormalities in individual FTD patients compared to FDG-PET, but its sensitivity and specificity for discriminant diagnosis of a patient from healthy individuals remained unmatched to FDg-PET.