IMAGING OF ARTICULAR PATHOLOGY - MRI, CT, ARTHROGRAPHY

The purpose of this review article is to present the advantages and li mitations of magnetic resonance imaging (MRI), computed tomography (CT ) and arthrography for evaluating articular pathology. Techniques, pat ient selection, indications and contraindications for each modality ar e reviewed. MRI provides superior soft tissue contrast and image plane selection, making it the ideal technique for most articular abnormali ties. However, obese patients and patients with certain electrical or metallic implants cannot be examined with MRI. CT provides superior de tail for fine cortical bone and subtle calcifications, but lacks the s oft tissue contrast provided by MRT. Arthrography is an invasive techn ique with minimal risk of allergy to contrast material or infection. T his technique permits accurate measurement of capsular volume, allows for fluid aspiration for laboratory studies and permits injection of a nesthetic and/or steroid compounds for purposes of treatment or confir ming the site of the patient's pain. Magnetic resonance imaging, compu ted tomography and arthrography are useful techniques for evaluating a rticular pathology. Careful review of the clinical symptoms and patien t's condition is necessary to select the most appropriate technique. ( C) 1997 Wiley-Liss, Inc.