Human MRI Safety Test

SAR stands for? *

All stainless steel implants in humans are safe for scanning. *

When administering MRI contrast material it is necessary to have a physician in the area *

There are no known permanent biologic after-effects associated with getting an MRI scan. *

The rapid boil-off of cyrogens from the magnet is called ...(1)... and the immediate safety concern from such an event is ...(2)...and...(2)... *

In the event your patient experiences some kind of medical distress, the first thing you should do is ... ? *

All MRI scanners are "shielded" to reduce the fringe fields thus making it "safe" to bring ferrous objects into the scanning rooms. *

It is safe to scan patients with pacemakers as long as they are not "pacer dependent". *

A fire fighter that has a non-ferrous oxygen tank strapped to his back and is running past a fully operational magnet may experience ... even though the tank is MRI compatible. *

Looped coil wires or ECG leads can cause focal heating within a patient the may lead to 1st, 2nd or 3rd degree burns. *

Although this doesn't happen often, the time varying magnetic fields can be responsible for causing peripheral nerve stimulation in patients during rapid switching of gradients on and off. *

There are two real safety concerns with regard to the magnetic forces and how they interact with ferrous objects. They can be described as ... ? *

Some reversible biological effects have been observed on human subjects exposed to 3T field strength. These effects include fatigue, headaches and hypotension. *

The force with which ferrous objects are pulled toward a magnetic field is a function of the mass of the object and the distance from the magnet. *

RF antenna effects can cause ... ? *

Since the acoustic noise created during images acquisition is considered to be within recommended safety guidelines, it is not necessary to give the patient ear plugs for protection to prevent hearing loss. *