6

Question 1

process of adding together the number of x-rays emitted at each energy over the entire spectrum,

Answer 1

integration

Question 2

the farther to the right a spectrum is

Answer 2

the higher the effective energy or quality of the x-ray beam

Question 3

the larger the area under the curve

Answer 3

the higher is the x-ray intensity or quantity

Question 4

energy

Answer 4

quality

Question 5

intensity

Answer 5

quantity

Question 6

when mA is double

Answer 6

mAs is doubled

Question 7

how to get mAs

Answer 7

mA x s

Question 8

effect of mA and mAs

Answer 8

Change in mA or mAs results in a PROPORTIONAL change in the amplitude of the x-ray emission spectrum at all energies

Question 9

effect of kVp

Answer 9

As the kVp is raised, x-ray quantity increases with the square of the factor by which kVp was increased

Question 10

effect of kVp

Answer 10

change in kVp affects both amplitude and position of x-ray emission spectrum

Question 11

rule of thumb

Answer 11

“A 15% increase in kVp is equivalent to doubling the mAs.”

Question 12

to increase the intensity, increase kVp up to

Answer 12

40%

Question 13

effect of added filtration

Answer 13

reduces x-ray beam intensity while increasing the average energy

Question 14

adding filtration also called as

Answer 14

hardening the xray beam

Question 15

result of adding filtration

Answer 15

increase in the energy of x-ray beam and reduction in x-ray quantity

Question 16

effect of target material

Answer 16

affects both quantity and quality of x-rays

Question 17

Increasing target atomic number enhances the

Answer 17

efficiency of x-ray production and
the energy of characteristic and bremsstrahlung x-rays.

Question 18

five voltage waveforms

Answer 18

Half-wave–rectified
Full-wave–rectified
Three-phase/six-pulse
Three-phase/ 12-pulse
High-frequency waveforms

Question 19

produce the lowest voltage ripple of all high-voltage
generators

Answer 19

High-frequency generators

Question 20

voltage across the x-ray tube is zero

Answer 20

t=0

Question 21

the voltage across the x-ray tube has increased from 0 to approximately 60,000 V

Answer 21

t = 1 ms

Question 22

the tube voltage has increased to approximately 80,000 V

Answer 22

t = 2 ms

Question 23

the maximum tube voltage is obtained

Answer 23

t = 4 ms

Question 24

more intense x-ray emission than single-phase
operation

Answer 24

voltage waveforms of three-phase or high frequency operation

Question 25

number of x-rays emitted at each instant through a cycle is not proportional to the voltage
(no answer)

Answer 25

number of x-rays emitted at each instant through a cycle is not proportional to the voltage.

Question 26

reduced in ripple

Answer 26

operation with three-phase power is approximately 12% increase in kVp