G
George Petrides
Researcher at Royal Victoria Infirmary
Publications - 29
Citations - 539
George Petrides is an academic researcher from Royal Victoria Infirmary. The author has contributed to research in topics: Dementia with Lewy bodies & Dementia. The author has an hindex of 10, co-authored 29 publications receiving 333 citations. Previous affiliations of George Petrides include National Health Service & Newcastle upon Tyne Hospitals NHS Foundation Trust.
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Journal ArticleDOI
Cerebral glucose metabolism and cognition in newly diagnosed Parkinson's disease: ICICLE-PD study
Michael J. Firbank,Alison J. Yarnall,Rod A Lawson,Gordon W Duncan,Tien K. Khoo,George Petrides,John T. O'Brien,Roger A. Barker,Ross J. Maxwell,David J. Brooks,David J. Burn +10 more
TL;DR: Reductions in cortical FDG metabolism were present in newly diagnosed PD, and correlated with performance on neuropsychological tests, suggesting a reduced baseline parietal metabolism is associated with risk of cognitive decline and may represent a potential biomarker for this state and the development of PD dementia.
Journal ArticleDOI
Neuropsychiatric symptoms and cognitive profile in mild cognitive impairment with Lewy bodies.
Paul C. Donaghy,John-Paul Taylor,John T. O'Brien,Nicola Barnett,Kirsty Olsen,Sean J. Colloby,Jim Lloyd,George Petrides,Ian G. McKeith,Alan J. Thomas +9 more
TL;DR: MCI-LB is associated with neuropsychiatric symptoms and a cognitive profile similar to established DLB and abnormal FP-CIT SPECT imaging, which supports the concept of identifying MCI- LB based on the presence of core diagnostic features of DLB.
Journal ArticleDOI
Diagnostic accuracy of dopaminergic imaging in prodromal dementia with Lewy bodies.
Alan J. Thomas,Paul C. Donaghy,Gemma Roberts,Sean J. Colloby,Nicky Barnett,George Petrides,Jim Lloyd,Kirsty Olsen,John-Paul Taylor,Ian G. McKeith,John T. O'Brien +10 more
TL;DR: Dopaminergic imaging had high specificity at the pre-dementia stage and gave a clinically important increase in diagnostic confidence and so should be considered in all patients with MCI who have any of the diagnostic symptoms of DLB.
Journal ArticleDOI
Clinical and imaging correlates of amyloid deposition in dementia with Lewy bodies.
Paul C. Donaghy,Michael J. Firbank,Alan J. Thomas,Jim Lloyd,George Petrides,Nicola Barnett,Kirsty Olsen,John T. O'Brien +7 more
TL;DR: This data indicates that amyloid deposition is common in dementia with Lewy bodies and its pathophysiological significance is unclear, but the importance of this finding is still unclear.
Journal ArticleDOI
Intra- and interobserver variability in skeletal muscle measurements using computed tomography images
Joanna E. Perthen,Tamir Ali,David McCulloch,Maziar Navidi,Alexander W. Phillips,R C F Sinclair,S. Michael Griffin,Alastair Greystoke,George Petrides +8 more
TL;DR: The approach described provides reproducible skeletal muscle area measurements, and three specific recommendations to minimise variability are offered.