Final answer:
a. temporal resolution
Scanning a moving organ without motion artifacts is achieved with high temporal resolution, crucial in medical imaging for capturing clear images of dynamic organs.
Step-by-step explanation:
The ability to scan a moving organ without seeing motion artifacts on the images is an example of an exam performed with high temporal resolution. This is essential in medical imaging techniques such as CT scans, MRI, and ultrasound, where the movement of an organ can otherwise compromise the quality of the images. Temporal resolution refers to the ability of an imaging system to accurately capture moving objects at a specific moment in time, which is crucial for distinguishing between healthy and diseased tissue in dynamic organs like the heart or lungs.