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Imaging of finger joints in a whole-body MR system using a simple and low-cost solenoidal coil.
J Magn Reson Imaging
December 2001
Department of Diagnostic Radiology, Singapore General Hospital, Singapore.
This work considers the design and operation of a solenoid radiofrequency (RF) coil for magnetic resonance (MR) mini-imaging of finger joints using a whole-body system. The considerations were focused on the requirements of high sensitivity, easy patient access, and cost-effectiveness. The proposed design is a short, two-turn solenoidal coil that accomplishes high spatial uniformity over a 2-cm region of interest (ROI).
View Article and Find Full Text PDFMRI study of transient cerebral ischemia in the gerbil: interest of T2 mapping.
Invest Radiol
March 2000
Unité de Vectorisation Particulaire, Faculté de Médecine, Université d'Angers, France.
Rationale And Objectives: The aim of this study was to evaluate the diagnostic use of MRI and, more precisely, the use of quantitative T2 imaging at 7 T for the early detection of neuronal cerebral alterations after transient ischemia in the gerbil.
Methods: One hundred forty-seven Mongolian gerbils were separated into four groups for which a bicarotid artery occlusion lasted for 4, 6, 8, or 10 minutes, respectively. The animals were scanned before carotid artery occlusion and at 3, 6, 10, 24, and 48 hours and 5 days after the ischemic incident.
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