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Which of the following can be calculated using Line A in the diagram below?

Calculate the focal depth for a 12 MHz transducer that utilized a crystal diameter of 4 mm.

What type of transducer was used to create this image?

What will happen to the ultrasound wave produced by the following steep sloped phase delay profile?  

a. What is the difference between the reversal design and the multiple-baseline design (MBD)? b. How is experimental control demonstrated in the MBD?

Which of the following is an advantage of a 1.5D array?

A sonographer changes the focal depth from 3cm to 5 cm, they are using a Linear 12-5MHz transducer.  Indicate which transducer design feature below allows this to happen?

Choose the correct labels for the transducer below. *Note – this transducer includes and external lens for focusing.

[BONUS 2 POINTS] Explain your answer for the question above (graphs): a. For the correct response, explain why the graph demonstrates experimental control.  b. For the incorrect response, explain why each graph DOES NOT demonstrate experimental control. 

If the crystal diameter is increased by a factor of 3 what happens to the focal depth? (*hint – think about the NZL equation)