A B-mode scan is taken of the object shown on the left (see figure below) with a

Question

A B-mode scan is taken of the object shown on the left (see figure below) with a linear array. There are four tissue components, A and B with a boundary in-between and two spherical tumors C and D. Given the corresponding ultrasound image shown on the right, what can you deduce about the acoustic characteristics of components A, B, C and D? (choice maybe more than one)

A.Since the boundary between a and b is visible, Za?Zb

B. Since tumour d is not visible, Zb=Zd.

C. Since tumour c is visible, Zc?Zb.

D. Since tumour c is elongated, cc

Explanation / Answer

1..Since the boundary between a and b is visible, ZaZb .

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