Image courtesy of the Ludwig Family. 
Front of George Ludwig's paper in 1949 on the detection of gallstones using ultrasound. The summary page of this paper can be found here.
Back to History of Ultrasound in Obstetrics and Gynecology.
Image courtesy of the Ludwig Family.
Front of George Ludwig's paper in 1949 on the detection of gallstones using ultrasound. The summary page of this paper can be found here.
Back to History of Ultrasound in Obstetrics and Gynecology.