Consider the phased array in Figure 11.15. Suppose we want to
image a cross section of a patient as shown in Figure P11.2 by acquiring a scan
line every _ = 1_. Assume there are 101
transducers operating at a frequency of 2 MHz and c = 1, 540 m/s and d = 0.6
mm.
(a) Find an expression for the time delay of the ith
transducer as a function of angle of the transmitted plane wave.
(b) How long does it take to scan the entire FOV assuming R
= 20 cm?
Consider the phased array in Figure 11.15. Suppose we want to
image a cross section of a patient as shown in Figure P11.2 by acquiring a scan
line every _ = 1_. Assume there are 101
transducers operating at a frequency of 2 MHz and c = 1, 540 m/s and d = 0.6
mm.
(a) Find an expression for the time delay of the ith
transducer as a function of angle of the transmitted plane wave.
(b) How long does it take to scan the entire FOV assuming R
= 20 cm?
Figure P11.2 See Problem 11.6.
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