3. If 200 lines compose each frame acquired at a rate of 18 frames per second, can we image an anatomical structure 22 cm deep? 4. An image has 100 scan lines. How much time is required to form this image if the depth of interest is 10 cm? 5. Modern machines tend to have scan set up automated. For example, can select liver or pancreas and machine will select many parameters for you. How can machine optimize parameters without specifying all values in the equation (FR x P x N = c/2)? Read question carefully.