Mechanical the addition device to trade ueb straight lateral compound differential for echo mammography

摘要

The accessory has a water container (21) with a cover (22) and a hole (23) with rounded edges. An arm (10) projects below the hole in the water container and carries a sound head (11) directed at the hole. The arm is pivoted to the container so as to execute a roughly semicircular oscillating motion about the centre of the hole. The breast fits into the hole. The end of the arm carrying the sound head can move perpendicular to the plane in which the arm oscillates. This is accomplished by making the head-end of the arm telescopic. The distance of the arm and therefore of the head from the hole can be adjusted. The arm may carry more than one sound head each associated with a different frequency. A video camera (19) may project through the container and look towards the opening in order to record the position of the sound head. Alternatively, the head is mounted on a semicircular bracket instead of on an arm. The bracket is pivoted at both ends. The patient's breast is examined almost entirely automatically.