Di ophthalmic ultrasound scanner (NSN 6540-01-607-0640)
Special Features
Dead zone; horizontal and vertical distance accuracy; depth of penetration; image uiformity; axial resolution; foam-lined carrying case; constructed of solid elastic zerdine; gray scale targets; vertical targets - 1 group with 10 per group, 18cm depth range, 2cm spacing; horizontal plane targets - 1 group with 7 per group, 9cm depth range, 2cm spacing; near field targets - 1 group with 6 per group, 1-6 cm depth of targets; axial-lateral resolution targets - 2 groups with 12 per group, 3 and 11cm depth, 0.5-5mm spacing; anechoic cylinders - five 8mm targets, anachoic contrast; gray scale targets - six 8mm targets, -6db and -3db anechoic contrast, 3db and 6db hyperechoic contrast
