Question

Which of the following combinations of scanning parameters is best for evaluating abnormalities within the petrous pyramids of the temporal bones?

a. standard algorithm, window width =300, 0.5 to 2 mm slices
b. soft algorithm, window width =300, 0.5 to 2 mm slices
c. sharp algorithm, window width=2500, 0.5 to 2 mm slices
d. standard algorithm, window width=2500, 4 to 8 mm slices

Answer 1

The best scanning parameters for evaluating the petrous pyramids of the temporal bones on a CT scan would be a sharp algorithm with a window width of 2500 and 0.5 to 2 mm slices for high-resolution imaging of bone structures.

Step-by-step explanation:

The subject of this question pertains to evaluating abnormalities within the petrous pyramids of the temporal bones using computed tomography (CT) scans. The appropriate combination of scanning parameters for this purpose would be c. sharp algorithm, window width=2500, 0.5 to 2 mm slices. This specific combination uses a sharp algorithm which is beneficial for visualizing bone detail; a window width of 2500 is suitable for bone imaging, and finally, the slice thickness of 0.5 to 2 mm offers high resolution to detect subtle abnormalities.