HARD AND SOFT BACKING FOR MEDICAL ULTRASOUND TRANSDUCER ARRAY

摘要

A transducer for multiple purposes is provided. Different backings (24, 26) are used for different elements (18) of a same array. The different backings (24, 26) optimize the respective elements (18) for the desired use. A soft backing (e.g., Z = 3 Mrayl)(24) is used behind some elements (18) for ultrasound imaging. A hard backing (e.g., Z=100 Mrayl)(26) is used behind other elements (18) for lower frequency operation