| 摘要 |
An improved piezo-electric transducer to provide a maximal transmission of ultrasonic energy into and from human and animal tissues for the determination of abnormalities eliminating the necessity of collimating accessories at transducer level, which accessories result in avoidable energy transmission and receipt losses. An ICT (Intrinsically Collimated Transducer) provides parallel beam transmission with the emitted beam focussed at infinity. The transducer affords an intrinsically collimated beam of energy to insure a most favorable diagnostic approach to detection of tissue abnormalities. A thin piezo-electric, ceramic, member is provided with one side having a plurality of isolated electrodes which are commonly or individually connected by means of a flexible, compressible, elastomeric, energy conducting membrane or means such as highly conductive metals, though relatively inflexible when compared to elastomers are relatively flexible as compared to solid metals. The plurality of isolated, conductive electrodes provide a plurality of energy conductive paths through the transducer which results in parallel sonic energy minibeams being emitted from the frontal face of the transducer. These electrodes function to receive return energy upon echo from the tissue.
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