Ultrasound Flashcards
orientation marker
must point toward right side or cephalic direction of patient
transducer
rectangular linear - rectangle
curved array - trapezoid
phased - all elements in array
annular - circular fashion 360 degrees
resolution
ability to distinguish between structures
echogenecitiy
degree to which tissue reflects waves
anechoic
no internal echos - dark or black
isoechoic
similar appearance to surrounding tissue
hypoechoic
less echoic (darker)
hyperechoic
more echoic (lighter)
fluid
black
organs
characteristic shape
bone
bright echo
gas
bright in bowel
polycystic ovarian syndrome
string of pearls
dopler effect
to see blood flow
pulsed flow
just measures flow
continous flow dopler
sound waves multi direction
can measure direction of flow
FAST exam
focused assessment sonogroph trauma
lookin for blood
subxiphoid
morisons pouch
pouch of douglas
splenorenal
bullseye
axial view of appendix
hot appendix
LUQ
spleen
heart
subxiphoid
negative fast exam
doesnt rule out
positive enhancement
gallstone
after 20 weeks
size of baby becomes variable
