Medical Imaging and Body Systems Flashcards
Name the 4 commonly used diagnostic imaging techniques
Conventional Radiography (ordinary x-ray)
Computerized tomography (CT)
Ultrasonography (US)
Magnetic Resonance Imaging (MRI)
What do the beams of x-rays do?
Penetrate the body
What absorbs the most x-ray?
Compact bone
What absorbs the least x-ray?
Air
What is it called when structures not looking like they’re in their places because of raduodensity/radiolucency
Superimposing
_________ structures absorb x-rays
Radiodense
_________ structures don’t absorb x-rays
Radiolucent
Name most radiodense to least radiodense
Compact bone Spongy bone Water and most tissue Fat Air
Name most radiolucent to least radiolucent
Air Fat Water and most tissues Spongy bone Compact bone
What is contract media?
Radiopaque fluids
- Iodine compound
- Barium
What do radiopaque fluids (like iodine compounds and barium) help with?
Visualising Digestive tract Blood vessels Urinary tract Synovial cavities
What is the imaging that uses x-ray, but it’s source and receiver rotated around axis of the body? Stacks 2D slices and can reconstruct 3D anatomy structures.
Computerized Tomography
Is there superimposition with computerized tomography, just like x-rays?
No
What is ultrasoography?
Ultrasonic waves bounce back from tissues. Non invasive. No radiation used.
What does MRI stand for?
Magnetic resonance imaging
