The need for color coding in ultrasound mammography

The correct interpretation of echo amplitude patterns of high-resolution gray scale ultrasonograms of the breast requires the use of calibrated color-coded isodensitometry, standardized operation of the ultrasound system, amplitude stability of 1 per cent or better, and a constant velocity water-coupled electro-mechanical scanner. The same conditions may be required for correct interpretation of the ultrasonograms of the parenchyma of the liver, spleen, ovaries, testes, uterus, thyroid, and tumors. Color coding is not required and may actually be detrimental in the study of gross ultrasonography anatomy and in disease states that can be identified by simple anatomical distortions. To be of value, rigid standardization and control of the amplitude characteristics and scanning velocity of the system are imperative.