This paper describes three new types of displays for use in medical ultrasonography. These are video inversion, scanned deflection modulation, and scanned deflection‐intensity modulation. Video inversion is a B‐mode display in which the ultrasonographic data is presented as a radar and TV display on alternate scans. This display makes it possible to use the steep slope of the gray scale on the face of the cathode‐ray tube to display small changes in amplitude in both the very loud and weak ends of the acoustic spectrum. Scanned deflection modulation or scanning A‐mode restores anatomical orientation. This type of display greatly facilitates interpretation of medical ultrasonograms. Scanned deflection modulation has been combined with intensity modulation to produce scanned deflection‐intensity modulated ultrasonograms. This form of ultrasonographic data displays greatly facilitates ultrasonographic localization.

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