chapter 7

Question 1

characteristic X-Rays

• how are they produced
• how are K characteristic x-rays produced
• target
• wire
• type of energy

Answer 1

produced when an outer shell electron fills an inner shell void

• electrons are transitioned into the K shell
• anode
• cathode
• specific

Question 2

bremsstrahlung x-rays

Answer 2

-produced when a projectile electron is slowed by the nuclear field of a target atom nucleus

Question 3

change in the mAs (current)

• what does this change
• if you increase the mAs what happens

Answer 3

• changes the number of x-rays produced

- increases number of x-rays but does not change max energy

Question 4

change in the kVp (volts)

• what happens if you increase the kVp
• type of rule

Answer 4

• increases number of x-rays, increases max energy

- 15% rule

Question 5

15% rule

Answer 5

15% increase in kVp is equivalent to doubling mAs and number of x-rays

Question 6

adding filtration

Answer 6

• reduces x-ray beam intensity but increases energy

- lowers patient dose

Question 7

why is a 3 phase rectifier x-ray design better than a single phase

Answer 7

more intense x-ray emission

Question 8

which types of scans are conducted with tungsten target x-rays
-molybdenum

Answer 8

diagnostic

-mammography

Question 9

the amount of input energy that produces X-rays

-amount of energy that goes into heat in an X-ray tube

Answer 9

99% of energy goes into heat

-1% goes into x-rays