Breast Ultrasound of the Past and Present
In 1951, Wild and Neal used a 15 MHZ transducer to record and describe the acoustic impedance signatures of malignant, benign, and normal breast tissue. (Dempsey) This study paved the way for continuing improvements in breast ultrasound. From the 1970’s to the 1990’s, breast ultrasound saw the addition of determined malignant mass characteristics, Doppler study, and it integration as the preferred