PHYSICS ARRT SONOGRAPHY questions with correct answers
piezoelectric effect? CORRECT ANSWER property of certain materials to create a voltage when pressure is applied -indirect piezoelectric effect reverse piezoelectric effect? CORRECT ANSWER property of certain materials to deform when voltage is applied to them and create pressure (sound) -direct piezoelectric effect what piezoelectric material is used in ultrasound transducers? CORRECT ANSWER lead zirconate titanate (PZT) PZT crystal thickness? CORRECT ANSWER 1/2 wavelength thick 5 parts of ultrasound transducer? CORRECT ANSWER 1. pzt 2. case 3. wire 4. matching layer 5. damping element matching layer of transudcer? CORRECT ANSWER impedance of matching layer is between those of the skin and active element which increases percentage of sound transmitted
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physics arrt sonography questions with correct ans
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