Zones safety Flashcards
MRI Zones
4 zones
Zone 1
general public
Zone 2
Waiting room
Zone 3
screened patients
trained personel
Zone 4
exposed to magnetic field
training levels
level 1
level 2
level 1 training
minimal training
clerical
cleaning
level 2
extensive training
technologist
tech aid
RN
quench
release of helium
properties of helium
boil -451F/-269C
expands 8x
quench concerns
asphyxiation
pressure entrapment
ruptured ear drums
hypothermia
fire
induced voltages
Pregnant patients
no known harm
Contrast
gadolinium
heavy metal
Group 1 contrast
known nsf
omniscan
magnavist
optimark
group 2 contrast
no nsf
multihance
gadavist
doterem
prohance
Group 3
Eovist
contrast pregnant patient
no agents FDA approved
risk/benefit
informed consent
chelation
binding of gadolinium
macrocyclic
linear
macrocyclic binding
most stable
caged gadolinium
linear binding
less stable
wrapped around gadolinium
gadolinium retention
no known harm
brain
nsf
shown in patients with normal renal function
acute contrast reactions
N/V
allergic
anaphylaxis
chronic reactions
retention
NSF
NSF
thickening/hardening renal tissue
no known cure
