Radiological methods of studying the orbit.
The orbit is a challenge diagnostically to the ophthalmologist and the radiologist because of its small size and enclosed nature. As a result, a variety of radiological tests have been devised to study the orbit, although no one test is entirely definitive. Conventional X-rays, the use of ultrasound techniques, and the injection of contrast into either the orbit per se or the vasculature of the orbit are extremely useful. However, none of these techniques can produce clear, cross-sectional and unsuperimposed images, such as those obtained from computed tomography. The use of color-coding is useful in enhancing even high quality gray-scale scans. Above all, the technique of computed tomography offers the advantages of noninvasive study.
D005128:Eye Diseases / Q000175:diagnosis; D006801:Humans; D009915:Orbit / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed