application of ultrasound Flashcards
what benefit does ultrasound have over many other imaging modalities
real time assessment
sonography is not a profession in its own right, in order to be registered they must hold a professional title
what are the 2 forms of ultrasound
standard
portable
what are the 2 types of portable ultrasound
- hand held connection to tablet or smart phone
- trolly or cart connected to laptop / laptop equivilant
static machines can vary in size and capability with a range of functions
smaller machines for single clinical settings
multifunctional amchinesas used in clinical imaging department
what are the 3 general components of ultrasound
display monitor
transducer/probe
internal memory for image storage
what are the 5 adjustable controls on the control panel of an ultrasound machine
- focus
- TGC
- gain
- depth
- zoom
what are the 3 different probe types and the shape of their beam
linear = rectangle
curvilinear = cup shape (curved following probe surface but still running parallel) wide near and far field
phased array = cone shaped, tip closest to probe and widening going out (narrow near field, wide far field)
what is linear probe good for
vascular small parts and intraoperative settings
whats curvilinear probe good for
deep structures e.g obstetrics
whats phased array prob good for
imaging through obstructions e.g ribs in cardiology
what position is the patient usually in for xamination
supine
what is acoustic couplant and why is it needed
gel, needed to transmit sound
how would you position the patient to scan musculoskeletal e.g shoulder
sit upright on bed or chair