A simple and inexpensive contact B-scan ultrasonoscope is described. This instrument, while retaining some of the features of more elaborate equipment, is intended as a clinical instrument. By eliminating the need for a water bath, the contact technique permits patients of all ages to be examined easily. The B-scan image is presented on a television tube, which may be photographed for a permanent record.
Bronson NR, Turner FT. A Simple B-Scan Ultrasonoscope. Arch Ophthalmol. 1973;90(3):237-238. doi:10.1001/archopht.1973.01000050239012