Differential Absorption Flashcards
occurs because of compton scattering
Dofferential Absorption
is transmitted through the patient
Photoelectric Effect and X-rays
xray contributes no usefel information to the image
Compton-Scattered
xrays that udergo _______ provide diagnostic information to the image receptor
Photoelectric Interaction
why is that photoelectric interaction provide diagnostic information to the image receptor?
Because they do not reach the image receptor, these xrays are representative of anatomical structure with a high xray absorption characteristic; such structures are radiopaque
produces light areas in a radiograph, such as those corresponding to bones
Photoelectric Absorption
other xray penetrate the body and are transmitted to the image receptor with ______ interaction
No Interaction
they produce the dark areas of a radiograph, and the anatomical structure through which these xray pass is _____
Radiolucent
an xray image results from the difference between those xrays absorbed photoelectrically in the patuent and those transmitted to the image receptor
Differential Absorption
increases as the kVp is reduced
Differential Absorption
xray beams contain ___ ____ of deffering energies
Xray Photons
As these 3 photons pass through our body some xrays are ________
absorbed completely
not absorbed at all
absorbed partially
complete these:
some xray are absorbed completely resulting in ______
some xray are not absorbed at all (transmitted) resulting in _____
some xrays are absorbed partially resulting in ____
white areas on the image or film
black areas on the image or film
gray areas on the image or film
more _____are absorbed photoelectrically in bone that in soft tissue
Photons
(depending on atomic number z)
probability of photoelectric interaction is ___ times for bone than soft tissue
7
bone has a higher mass density than ____
Soft Tissue
mass per unit volume (kg/m3)
Mass Density
what are the 2 substance that both have a high atomic number (z) and density than sof tissue
barium and iodine
