MRI PATIENT CARE Flashcards
(26 cards)
Malpractice
Is improper or illegal professional activity or treatment of a patient
Respondent Superior
A doctrine under which a principal or an employer is held liable for the wrongful acts committed by agents or employees while acting within the course and scope of their agency or employment.
Negligence
Is the failure to fulfill professional obligations of expected standard of care
Res Ipsa Loquitur
The thing speaks for itself
Protected Health Information (PHI)
Any information about health status, provision of health care, or payment for health care that can be linked to an individual. This is interpreted rather broadly and includes any part of a patient’s medical record or payment history.
Ferromagnetic Material
Cobalt, Nickel, Steel, Iron
Non Ferromagnetic Materials
Copper and Titanium
Decoupling
Creates unintended circuits that can cause heat and potential burn hazards
Cryogen (liquid helium) Temp
269 C or 4 K
Quenching
Rapidly releasing helium from an MRI magnet to shut it down.
This happens when the magnet’s temperature rises
Why is it important to stay low to the floor during an MRI quench
Due to the rise of helium reducing oxygen in the room
Ambient Room Temperature
69 F or 21 C
Ambient Room Humidity
50%-70%
Fringe Field
stray magnetic field outside the bore of the magnet
SAR is measured in:
W/kg or watts per kilogram
Specific Absorption Rate (SAR)
The amount of radio frequency absorbed per unit of mass per patient
SAR Guidelines: whole body
4 w/kg at 15 min exposure
SAR Guidelines: Head
3 w/kg at 10 min exposure
SAR Guidelines: Head or torso
8 w/kg at 5 min exposure (per gram)
SAR Guidelines: Extremities
12 w/kg at 5 min exposure (per gram)
dBa
A-weighted decibels
Expression of relative noise or sound pressure in relation to time applies
Medical asepsis
practices designed to reduce the number and transfer of pathogens; synonym for clean technique
Surgical asepsis
destroys all microorganisms and their spores
Vehicle
Method of transmission for pathogens