radiology Flashcards
what organs are x-rays good for?
heart, lungs, bowel with air
what organs are x-rays not good for?
soft tissue
what is angiography best used for?
vessels and interventions
what is CT good for?
most body parts
what is MR good for?
soft tissue, young and pregnant
what is ultrasound good for?
fluid filled structures, superficial parts, young and pregnant
nuclear medicine
functional imaging; whatever the specific target of the study is; best for physiological imagine
what technique has no radiation?
ultrasound and MR
what technique has the most radiation
CT, angiography, nuclear medicine
what has the best spatial resolution?
x-ray
What is fluoro best used for?
GI investigations
mammogram
x-ray that uses low energies to bring out differences between fat and soft tissue
structures that are _____ or have ______ are lighter on x-rays
denser; higher atomic number (bone not air)
fluoroscopy
real time x-rays used for barium swallow
MRI
uses magnets to excite protons be ware of the magnets