Mapping abnormal synovial vascular permeability in temporomandibular joint arthritis in the rabbit using MRI

Br J Rheumatol. 1996 Dec:35 Suppl 3:23-5. doi: 10.1093/rheumatology/35.suppl_3.23.

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 approximately 200 microliters/cc/h-compared to 25 microliters/cc/h in normal tissues).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Arthritis / pathology*
  • Capillary Permeability
  • Disease Models, Animal
  • Magnetic Resonance Imaging*
  • Male
  • Rabbits
  • Synovial Membrane / blood supply*
  • Temporomandibular Joint / pathology*