Ultrasonics. Pulse-echo scanners. Low-echo sphere phantoms and method for performance testing of gray-scale medical ultrasound scanners applicable to a broad range of transducer types— 62 стр.
11.040.50 Radiographic. Including radiographic diagnostic and therapy equipment / Радиографическое оборудование. Включая радиографическое диагностическое и терапевтическое оборудование
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры
