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b) The following table gives the density of some different media and the speed of ultrasound through them. Medium Air Fat Muscle Bone Density / kg m-3 1.3 925 1075 1650 Ultrasound velocity / m s1 Ir a(Proportion Reflection) It = 330 1450 1590 4080 (Z₂-Z₁)² (Z₂+2₁)² Use this information and the above equation to calculate the ratio a of the reflected ultrasound intensity I, to the incident intensity I, at the interface between i) air and fat ii) fat and muscle iii) fat and bone

b) The following table gives the density of some different media and the speed of ultrasound through them. Medium Air Fat Muscle Bone Density / kg m-3 1.3 925 1075 1650 Ultrasound velocity / m s1 Ir a(Proportion Reflection) It = 330 1450 1590 4080 (Z₂-Z₁)² (Z₂+2₁)² Use this information and the above equation to calculate the ratio a of the reflected ultrasound intensity I, to the incident intensity I, at the interface between i) air and fat ii) fat and muscle iii) fat and bone

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b) The following table gives the density of some different media and the speed of ultrasound through them. Medium Fat Muscle Bone -3 Density / kg m-³ 1.3 925 1075 1650 11. a(Proportion Reflection) = Ultrasound velocity / m s-¹ Ir 330 1450 1590 4080 (Z₂-2₁) (2:+2₁) Use this information and the above equation to calculate the ratio a of the reflected ultrasound intensity I, to the incident intensity I, at the interface between i) air and fat ii) fat and muscle iii) fat and bone c) Explain how the results of your calculations in part b) would influence the technique used by a clinician when performing echocardiography (ultrasound imaging of the heart). (at least 150 words)
Transcribed Image Text:b) The following table gives the density of some different media and the speed of ultrasound through them. Medium Fat Muscle Bone -3 Density / kg m-³ 1.3 925 1075 1650 11. a(Proportion Reflection) = Ultrasound velocity / m s-¹ Ir 330 1450 1590 4080 (Z₂-2₁) (2:+2₁) Use this information and the above equation to calculate the ratio a of the reflected ultrasound intensity I, to the incident intensity I, at the interface between i) air and fat ii) fat and muscle iii) fat and bone c) Explain how the results of your calculations in part b) would influence the technique used by a clinician when performing echocardiography (ultrasound imaging of the heart). (at least 150 words)
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