Meeting Banner
Abstract #0419

Magic-Angle Effect on In Vivo T2 Mapping of Cartilage

Victor Casula1,2, Olli Pekka Aro1, Petri Paakkari3, Stefan Zbyn4,5, Mika Nevalainen1,6, Mikko J Nissi1,7, and Miika T Nieminen1,2,6

1Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland, 2Medical Research Center, University of Oulu and Oulu University Hospital, Oulu, Finland, 3Department of Applied Physics, University of Eastern Finland, Kuopio, Finland, 4Center for Magnetic Resonance Research, Minneapolis, MN, United States, 5Department of Radiology, University of Minnesota, Minneapolis, MN, United States, 6Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland, 7Department of Applied Physics, University of Eastern Finland, Oulu, Finland

Magic-angle effect in T2 relaxation time of knee cartilage was determined in vivo at clinical magnetic field strength. T2 was measured in healthy volunteer’s articular cartilage on a 3 T clinical scanner at two different orientations of the normal direction of the articular surface with respect to the main magnetic field. Magic-angle effect produced significant variations in the T2 values of healthy cartilage (up to 102% difference in deep cartilage), clearly demonstrating the importance of taking the orientation into account in clinical studies when interpreting cartilage degeneration using T2 mapping.

This abstract and the presentation materials are available to members only; a login is required.

Join Here