radiation creation and interactions

what are the 2 types of electron/anode interactions that produce xrays?

characteristic and brehmstrallung

In brehmstrallung radiation x rays are produced when an electron interacts with the ________ and slows down and swerves

This “braking” causes it to emit_________

nucleus (protons), xrays

the energy of a brehm xray depends on

An electron that gets slowed down a lot by the nuke will emit high/low energy xrays

how close it passed by nucleus and how much of its speed was sucked off.

high

characteristic xrays are created when an electron ______and leaves ________which is filled by

busts off an inner shell electron, space, outer shell electron

the energy of a characteristic x ray is equal to that of

the energy the replacing electron must give up to occupy the inner shell

what are the types of xray interactions

which is most common?

coherent

compton

photelectric

(chines communist party)

compton

In coherent scatter, the xray retains/loses energy?

what happens to it?

Is it diagnostic energy or no?

are any electrons busted off?

retains

changes direction

yes

no

what does coherent scattering do to the image?

nothing

coherent scattering has 2 other names

elastic and rayleigh

does coherent scatter result from high or low energy xrays?

>?

low, less than10 kEv

In photoelectric interactions, does the xray retain or lose energy? how much

loses all, gets absorbed

which interaction is primarily responsible for contrast in the image?

coherent

compton

photoelectric

photoelectric

what does photoelectric do to the image?

primary source of contrast since it gets absorbed

at what energy level and below is photoelectric interactions dominant

less than 30kEv

in compton scattering does xray lose or retain energy?

what happens in this interaction to the xray and electron?

does the affected atom gain a charge? neg or pos?

loses some

incoming xray comes in and busts off an electron, the xray loses some energy but still exposes the IR

yes, becomes a positive ion

at what energy level is compton scatter most predominant?

greater than 30 kEv

what does compton scatter do to the image?

causes artifacts and haze n shit.

characteristic xray energy is equal to the diff between the ______electron and the outer shell electron which________the inner shell elec

inner, replaces

auger electrons are ejected when the energy released from a _______interaction ejects an________

characteristic, electron

Does higher kVp mean more or less scatter?

more