MRI patient safety
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| The fringe magnetic field: A. Is eliminated by magnetic shielding B. Is eliminated by shimming C. Poses no safety risks if the MRI machine is not scanning D. Can cause nearby medical devices to malfunction | D. Can cause nearby medical devices to malfunction
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| Adequate patient care dictates a patient having an MRI should be __________ monitored. A. EtCO2 (End-Tidal CO2) B. PG (peripheral gating) C. Visually and/or verbally D. Not at all | C. Visually and/or verbally
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| The percentage of patients reported to have reactions to gadolinium MRI contrast are: A. None B. Less than 1% C. 10% D. 42.57% | B. Less than 1%
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| When would sterile technique be utilized? A. Upon receiving an isolation patient in the MRI suite B. When placing ECG leads on a patient's chest for a cardiac MR C. Performing a procedure that would puncture a patient's skin D. All of the above | C. When performing any procedure that would puncture a patient's skin
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| RF heating is more of a concern in ________ sequences. A. Gradient echo B. Inversion recovery C. Perfusion D. Fast spin echo | D. Fast spin echo
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| Prior to entering the MRI scan room, a patient should be screened for: A. Surgical history/implants B. Pregnancy C. Prior trauma or injury D. All of the above | D. All of the above
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| It is ___________ that every patient having an MRI be provided auditory protection in the form _________ A. Mandatory; lead shield B. Recommended; cotton balls C. Mandatory; earplugs and/or headphones D. Recommended; earplugs and/or headphones | Recommended; earplugs and/or headphones
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| Regions of the body that do not quickly dissipate thermal absorption from SAR during MR procedures are: A. Head and neck B. Liver and kidneys C. Eyes and testicles D. Spine and sacrum E. All of the above | Eyes and testicles
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| Cables from RF coils and gating leads should be: A. Coiled, preferably into a figure "8" B. Nicely formed into loops in the magnet bore C. Resting on the patient's arm or leg to immobilize the cables D. Braided and positioned straight in the bore | D. Braided and positioned straight in the bore
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| FDA limits for whole body SAR is ______ over 15 minutes of scanning. A. 2 W/kg B. 4 W/kg C. 6 W/kg D. 8 W/kg | 4 W/kg
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| The pulse sequence that should be utilized the least in a patient with implanted metallic hardware is: A. Spin echo B. Gradient echo C. Inversion recovery D. Fast spin echo | Gradient echo
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| The following items are typically permitted access a high field MRI system during an MRI guided core biopsy: A. Stainless steel scissors C. Aluminum interventional equipment D. Sterile nonferrous biopsy tray E. None of the above F. C and/or D | F. C and/or D
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| The primary biological effect of radiofrequency fields is ____________. A. Magnetophosphenes B. Hypertension C. Claustrophobia D. Tissue heating | D. Tissue heating
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| When moving blood enters a magnetic field, an effect on the ECG seen as a "T wave swelling" or spike occurs, also known as: A. Hypertensive effect B. Magnetohydrodynamic effect C. Dynamothoracic effect D. Dynamometer | B. Magnetohydrodynamic effect
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| A more accurate method of detecting small intra-ocular ferrous foreign bodies is: A. Ferromagnetic Detection systems B. Cat Scan C. Finger sweep D. Nuclear stress test | B. Cat Scan
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| he FDA limit on time varying magnetic fields is __________. A. 5T/sec B. 12G/cm C. 20T/sec D. Once the patient experiences peripheral nerve stimulation | D. Once the patient experiences peripheral nerve stimulation
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| The minimum acceptable method for detection of intra-ocular ferrous foreign bodies is: A. Ferromagnetic Detection systems B. Cat Scan C. Finger sweep D. X-ray | D. X-ray
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| The general public is limited to a magnetic field of ___________? A. 1 Gauss B. 5 Gauss C. 10 Gauss D. 1 Tesla | B. 5 Gauss
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| A patient with a history of _______ should have their GFR checked prior to the administration of IV contrast. A. Kidney disease B. Hypertension C. Diabetes D. All of the above | D. All of the above
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| The effect by which a patient may experience a visual stimulation, described as "seeing stars", is known as: A. Magnetic personality effect B. Magnetophosphenes C. Magneto-dynamic effect D. Magnet dynamic contrast susceptibility effect | B. Magnetophosphenes
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| SAR stands for: A. Standard absorption ratio B. Specific absorption rate C. Standard acquisition rate D. Spectral attenuation relaxation | B. Specific absorption rate
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| Risk factors of MR exposure with regards to SAR absorption include all of the following EXCEPT: A. Cardiovascular disease B. Hypotension C. Obesity D. Geriatric patients | Hypotension
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| Patient types who may require additional monitoring A. Patients with limited vocal and/or auditory ability B. Critical and/or unresponsive patients C. Pediatric (with or without sedation) D. Claustrophobic patients E. All of the above | E. All of the above
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| During a quench, patients and employees should be evacuated from the scan room to prevent __________. A. Ruptured tympanic membranes B. Frostbite and asphyxiation C. Subdural hematoma D. All of the above E. A and B | E. A and B
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| As the flip angle is doubled, the RF absorption increases by a factor of __________. A. 1 B. 2 C. 3 D. 4 | D. 4
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Created by:
zach1710