[Quantitative evaluation of ultrasonic images in differential diagnosis of bulky intraocular formations].

A method for evaluating ultrasonic gray-scale images by plotting amplitude histograms is proposed. From amplitude histogram analysis, echogenicity and homogeneity indexes of the examined tissues were estimated. A total of 213 images of bulky intraocular formations in 58 patients were analyzed by this method. Confidence intervals of the image echogenecity and homogeneity of choroidal melanomas did not overlap the confidence intervals of the above indexes of images of pseudotumorous intraocular formations. This permits using the homogeneity and echogenicity indexes as a test for differential diagnosis of bulky intraocular formations.