Consider an object comprising three squares of the same size with width is located at th...

Consider an object comprising three squares of the same size with width is located at the center of the middle square. The linear attenuation coefficient in these three regions are

Assume that parallel ray geometry is used.

(e) What is the smallest possible circular FOV to image the entire object shown in the figure? What is the shortest length of the detector array that will ‘‘cover’’ the FOV?

(f) Suppose the detector array has 256 elements. Using the CT ‘‘rule of thumb,’’ how many angles should be acquired? What is the pixel size of the reconstructed image (assuming the image covers the entire FOV.)