When using paramagnetic contrast agents to produce positive contrast, the effect is due to:

Regarding MRI facility zones, the zone that includes all areas that are freely accessible to the general public is _______.

The fringe field pose no risks to patients irrespective to their screening status (whether the patient has been appropriately screened or not). 

Paramagnetic contrast agents when used with T2 weighted pulse sequences produce _____ contrast enhancement.

When use of an MR contrast agent causes tissue to appear brighter, ___ has occured.

The pregnant patient:

Time-varying magnetic fields such as those produced by encoding gradients pose safety considerations regarding peripheral nerve stimulation and acoustic noise . 

Relaxivity can be defined as:

Paramagnetic contrast agents enhance brain tumors by:

The principle paramagnetic MR contrast agent is based on: