X-Ray Interactions

Question 1

2 Types of X-Rays

Answer 1

general / characteristic

Question 2

General Radiation

Answer 2

produced at the anode! when electron hits or comes close to nucleus of tungsten atom

Question 3

Characteristic Radiation

Answer 3

causes ionization! rare, above 70kVp. when an inner shell e- dislodges

Question 4

Primary Radiation

Answer 4

[primary/useful beam] general or characteristic radiation; makes the radiographic image

Question 5

Secondary Radiation

Answer 5

(less penetrating/useful) when primary beam interacts with matter

Question 6

Scatter Radiation

Answer 6

form of secondary that has been deflected from it’s path by an interaction with matter
*most detrimental, want to limit

Question 7

Types of Interactions w/ Matter

Answer 7

None, Photoelectric Effect, Scatter

Question 8

No Interaction

Answer 8

X-Ray photon passes through atoms/matter/tissues
*only type that generates images
No ionization, no scatter

Question 9

Photoelectric Effect

Answer 9

X-Ray photon absorbed, collides with inner shell e- , ionization, no scatter

Question 10

Compton Scatter

Answer 10

X-Ray photon collides w/ outer shell e- and ejects it from orbit, ionization
More common.

Question 11

Coherent Scatter

Answer 11

low-energy X-Ray photon interacts w/ outer shell e- and alters photons path. no loss of energy, NO ionization
less common

Question 12

Ionic Bonds

Answer 12

transfer of electrons

Question 13

Covalent Bonds

Answer 13

sharing of electrons

Question 14

Radioactivity

Answer 14

unstable atoms, spontaneous disintegrations to remain balanced - NOT USED IN DENTISTRY

Question 15

Wavelength + Frequency

Answer 15

inverse relationship