radiology Flashcards
What 4 factors does image quality depend on
contrast
image geometry
characteristics of x-ray beam
image sharpness and resolution
Radiographic can ‘mock’ our senses. Main effects can be caused by 3 things:
Intraoral examples of radiographs
periapical
bite-wing
occlusal
Extra oral examples
oblique lateral
various skull
panoramic
x-rays and their ability to penetrate human tissues were discovered by?
roentgen in 1895
x-rays produce when …… electrons bombard a ……. ….. and suddenly brought to ……
energetic
target material
rest
protons charge
positive
neutrons charge
nil
act as binding agents ‘ hold it together’
electrons charge
negative
Charge of the cathode
negative
Charge of the anode
positive
What does the cathode consist of
heated filament that provides source of electrons
What does the anode consist of
target (small piece of tungsten)