This imaging test can tell us about the function of the brain. nuclear medicine study

MRI

ultrasound

CT scan

*Its not CT scan*

Hey :)

An MRI can tell us about the function of the brain

MRI can detect a variety of conditions of the brain such as cysts, tumors, bleeding, swelling, developmental and structural abnormalities, infections, inflammatory conditions, or problems with the blood vessels. It can determine if a shunt is working and detect damage to the brain caused by an injury or a stroke

Hope this helps :)

The correct answer to what you are asking is probably a for a plethora of reasons