Question

This imaging tool measures a magnetic shift to generate an image

Answer 1

The imaging tool that measures a magnetic shift to generate an image would be a Magnetic resonance imaging or MRI. It is a medical imaging technique used in radiology to image the anatomy and the physiological processes of the body in both health and disease. 

Answer 2

MRI machine is a  imaging tool measures a magnetic shift to generate an image and very helpfull in medical field to diagnose many diseases,
hope it helps .