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Search: authors:"Anouk M. Barendregt"

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Juvenile idiopathic arthritis: magnetic resonance imaging of the clinically unaffected knee

Background Synovial thickening detected on magnetic resonance imaging (MRI) is present in a significant number of children with clinically inactive juvenile idiopathic arthritis (JIA). Objective To evaluate patient characteristics and disease activity parameters in a cohort of children with clinically inactive JIA, both with and without synovial thickening, in order to clarify...

Contrast-enhanced MRI findings of the knee in healthy children; establishing normal values

Objectives To define normative standards for the knee in healthy children using contrast-enhanced MRI, focusing on normal synovial membrane thickness. Secondly, presence of joint fluid and bone marrow oedema was evaluated. Methods For this study, children without disorders potentially resulting in (accompanying) arthritis were included. Patients underwent clinical assessments...

Diffusion-weighted imaging for assessment of synovial inflammation in juvenile idiopathic arthritis: a promising imaging biomarker as an alternative to gadolinium-based contrast agents

Objectives To compare dynamic-contrast-enhanced MRI (DCE) and diffusion-weighted imaging (DWI) in quantifying synovial inflammation in juvenile idiopathic arthritis (JIA). Methods Regions of interest (ROI) were drawn in the synovium of JIA patients on T1 DCE and T2 DWI, followed by extraction of the maximum enhancement (ME), maximum initial slope (MIS), time to peak (TTP), % of...

Feasibility of diffusion-weighted magnetic resonance imaging in patients with juvenile idiopathic arthritis on 1.0-T open-bore MRI

Amsterdam , The Netherlands 2 Anouk M. Barendregt 3 Radiology Department , St. Mary's Hospital, Imperial College Healthcare NHS Trust , Praed Street, Paddington, London W2 1NY , UK Objective To evaluate the