2) Suppose you emit an ultrasound pulse in the x direction from a source at each of eight different positions y. Each pulse receives a series of echoes, as shown in the table below (Echo times are in μs.): y (mm): 0/10 /20/ 30/ 40/ 50/ 60/ 70 Echo1  35/ 37/ 39/ 40/ 45/ 47/ 48/ 49 Echo2  97/ 98/ 58/ 56/ 57/ 96/ 91/ 90 Echo3  71/ 73/ 71/     /     /     /      /  Echo4  99/ 99/ 98/     /    /     /      /

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1) Suppose you send a short ultrasound pulse into the body at t = 0, and observe echoes at t = 31, 79, and 95 μs. How far from the source are the three tissue boundaries? Assume c = 1540 m s−1 in each tissue, and ignore attenuation. Draw a line corresponding to the x-axis (x = 0 is the source location), and draw a dot at the position corresponding to each boundary. You have just created an A scan, where each dot represents a boundary.
2) Suppose you emit an ultrasound pulse in the x direction from a source at each of eight different positions y. Each pulse receives a series of echoes, as shown in the table below (Echo times are in μs.):
y (mm): 0/10 /20/ 30/ 40/ 50/ 60/ 70
Echo1  35/ 37/ 39/ 40/ 45/ 47/ 48/ 49
Echo2  97/ 98/ 58/ 56/ 57/ 96/ 91/ 90
Echo3  71/ 73/ 71/     /     /     /      / 
Echo4  99/ 99/ 98/     /    /     /      /
Draw an x–y coordinate system (x = 0 is location of the source) and put a bright spot corresponding to each echo. Assume c = 1540 m s−1 in each tissue, and ignore attenuation. You have just created a two-dimensional ultrasound image.
3) Make a photo of your A- and B-scans and submit as an answer to this task.

1) Suppose you send a short ultrasound pulse into the body at t = 0, and observe
echoes at t = 31, 79, and 95 µs. How far from the source are the three tissue
boundaries? Assume c = 1540 m s-1 in each tissue, and ignore attenuation. Draw a
line corresponding to the x-axis (x = 0 is the source location), and draw a dot at the
position corresponding to each boundary. You have just created an A scan, where
each dot represents a boundary.
2) Suppose you emit an ultrasound pulse in the x direction from a source at each of
eight different positions y. Each pulse receives a series of echoes, as shown in the
table below (Echo times are in µs.):
| y (mm): | 0
Echol
10
20
30
40
50
60
70
35
37
39
40
45
47
48
49
Echo2
97
98
58
56
57
96
91
90
Echo3
71
73
71
Echo4
99
99
98
Draw an x-y coordinate system (x = 0 is location of the source) and put a bright
spot corresponding to each echo. Assume c = 1540 m s-1 in each tissue, and
ignore attenuation. You have just created a two-dimensional ultrasound image.
3) Make a photo of your A- and B-scans and submit as an answer to this task.
Transcribed Image Text:1) Suppose you send a short ultrasound pulse into the body at t = 0, and observe echoes at t = 31, 79, and 95 µs. How far from the source are the three tissue boundaries? Assume c = 1540 m s-1 in each tissue, and ignore attenuation. Draw a line corresponding to the x-axis (x = 0 is the source location), and draw a dot at the position corresponding to each boundary. You have just created an A scan, where each dot represents a boundary. 2) Suppose you emit an ultrasound pulse in the x direction from a source at each of eight different positions y. Each pulse receives a series of echoes, as shown in the table below (Echo times are in µs.): | y (mm): | 0 Echol 10 20 30 40 50 60 70 35 37 39 40 45 47 48 49 Echo2 97 98 58 56 57 96 91 90 Echo3 71 73 71 Echo4 99 99 98 Draw an x-y coordinate system (x = 0 is location of the source) and put a bright spot corresponding to each echo. Assume c = 1540 m s-1 in each tissue, and ignore attenuation. You have just created a two-dimensional ultrasound image. 3) Make a photo of your A- and B-scans and submit as an answer to this task.
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