© 1996 British Society for Rheumatology
Mapping Abnormal Synovial Vascular Permeability in Temporomandibular Joint Arthritis in the Rabbit Using MRI




* Department of Radiology, University of California San Francisco, CA, USA
Jozef Stefan Institute, University of Ljubljana Ljubljana, Slovenia
Department of Growth and Development, University of California San Francisco, CA, USA
Correspondence to:
Correspondence to: Franci Demsar, Jozef Stefan Institute, Jamova 39,61000 Ljubljana, Slovenia
| Abstract |
|---|
An automated method for two-dimensional spatial depiction (mapping) of quantitative physiological tissue characteristics derived from contrast-enhanced MRI was applied to a model of inflammatory disease represented by antigen-induced arthritis of the temporomandibular joint in the rabbit. Specifically, an established two-compartment kinetic model of unidirectional mass transport was implemented on a pixel-by-pixel basis to generate maps of tissue permeability surface area product (PS) and fractional blood volume (BV) based on dynamic MRI intensity data after administration of albumin-(Gd-DTPA)30, a prototype macromolecular contrast medium designed for blood pool enhancement. Maps of PS and BV in a disease model of induced arthritis clearly depicted zones of increased permeability (up to
200 µl/cc/h—compared to 25 µl/cc/h in normal tissues).
KEY WORDS: Arthritis, Macromolecular contrast media, MRI, Permeability