Biomedical Engineering > GATE 2021 > Ultrasound Imaging
A longitudinal pressure wave travelling inside a muscle tissue is incident at an angle of 60° at the interface between the muscle and kidney. Let the wave impedance be Zmuscle = 1.70 × 10⁵ g cm⁻² s⁻¹, Zkidney = 1.62 × 10⁵ g cm⁻² s⁻¹ and wave velocities in muscle and kidney tissues be 1590 and 1560 m/s respectively. The transducer centre frequency is 1.5 MHz. The pressure wave propagation angle in the kidney tissue and intensity transmission coefficient at the tissue interface are _______ degrees (rounded off to the nearest integer) and _______ (rounded off to two decimal places), respectively.
Correct : c
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