ARMRIT MRI Patient Care & MRI Safety Exam Questions With Correct Answers

Studies have demonstrated that persons with suspected intraocular metallic bodies must be screened prior to entering the static magnetic field. This can be adequately accomplished by obtaining: - Answer plain film x-rays of the orbits Orbital screening for suspected intraocular metallic bodies should be done prior to admitting patients and personnel into an MR system: - Answer at or above 0.01 Tesla strength Patients with tattooed eyeliner and / or eye makeup containing ferrous pigment should be screened and advised of what possible complication of MR imaging? - Answer transient skin irritation or cutaneous swelling of the eyes and surrounding tissues Pregnant MR technologists should be restricted from entry into the electromagnetic fields of the MR scanner. (True or False) - Answer false Maintaining an ambient room temperature between 65-75 degrees F, a relative humidity of 50-70%, and adequate air flow in the MR imaging room is recommended to: - Answer make patients more tolerant of the radio frequency heating effects The FDA defines the specific absorption rate to be below the level of concern at: - Answer less than or equal to 4 W/kg averaged over the body If the parameters selected for an imaging sequence will expose the patient to specific absorption rate levels in excess of the FDA defined level of no concern, they should never be employed on patients who are: - Answer febrile The FDA safe level for exposure to radio frequency radiation during an MR procedure is defined by restricting the specific absorption rate levels. Specific absorption rate level restrictions are imposed to control the risk of: - Answer systemic and / or local thermal injury The FDA defines the specific absorption rate to be at the level of concern when exposure to the radio frequency energy produces a core temperature increase in the body of: - Answer 1.0 degree C Acceptable safe levels for exposure of persons with cardiac pacemakers and defibrillators to magnetic fields should be enforced at the ________ gauss perimeter in the magnetic fringe field. - Answer 5.0 Patients with Swanz Ganz catheters should not undergo MR procedures because: - Answer eddy current inductive heating may melt the catheter What technique change could be employed to reduce radio frequency power deposition and circumvent the specific absorption rate limitations? - Answer shoulder Specific absorption rate limitation problems are more likely to be experienced using which transmitter coil: - Answer body If electronic decoupling of the coils is not available on an MR system, the position of the receiver coil to the transmitter must be true to an orthogonal plane (usually horizontal) of the magnet to avoid: - Answer possible damage to the coil If electronic decoupling of the coils is not available on an MR system, the position of the receiver coil to the transmitter must be true to an orthogonal plane (usually horizontal) of the magnet to avoid: - Answer possible radio frequency burns to the patient The primary source of acoustic noise during the MR procedure is: - Answer the gradient magnetic field With all other imaging parameters constant, the acoustic noise produced during the MR procedure will increase with: - Answer a decrease in the FOV With all other imaging parameters constant, the acoustic noise produced during the MR procedure will increase with: - Answer a decrease in slice section thickness With all other imaging parameters constant, the acoustic noise produced during the MR procedure will increase with: - Answer a decrease in radio frequency pulse bandwidth The easiest, safest and most effective intervention and management technique for reducing patient anxiety and panic disorder associated with MR procedures is: - Answer through providing detailed information and explanation of the physical apparatus and procedure