Study checklist

24.1 Production and use of ultrasound

Checklist

6 steps

24.1.1—A piezo-electric crystal changes shape when a p.d. is applied across it and

24.1.2—Ultrasound waves are generated and detected by a piezoelectric transducer

24.1.3—The reflection of pulses of ultrasound at boundaries between tissues can be

24.1.4—The specific acoustic impedance of a medium as Z = ρc

24.1.5—IR / I0 = (Z1 – Z2)2 / (Z1 + Z2)2 for the intensity reflection coefficient

24.1.6—I = I0e–µx for the attenuation of ultrasound in matter

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Study checklist24.1 Production and use of ultrasound