X-ray Emission Spectrum Ch 8

Question 1

What is the y axis?

Answer 1

Quantity

Question 2

What is the x axis?

Answer 2

Quality

Question 3

The total number of x-rays emitted is ______ to the area under the curve of the x-ray emission spectrum.

Answer 3

Equivalent

Question 4

Factors that can change the size and shape of the emission spectrum curve are…

Answer 4

1. mA or mAs
2. kVp
3. Added filtration

Question 5

What factor does mAs control?

Answer 5

Quantity (y axis)

Question 6

Added filtration will reduce beam intensity while _____ the average energy

Answer 6

Increasing

Question 7

What happens to the curve when mA is adjusted?

Answer 7

Amplitude of the spectrum goes up or down

Question 8

What happens to the curve when kVp is adjusted?

Answer 8

The amplitude and position is effected

Question 9

What happens to the curve when filtration is added?

Answer 9

Amplitude goes down and curve leans slightly to the right

Question 10

If the target atomic number is increased, what happens to the efficiency of x-ray production?

Answer 10

It is enhanced

Question 11

What will be affected by the type of voltage waveform used?

Answer 11

Quantity and Quality

Question 12

X-ray _______ is the number of x-rays in the useful beam.

Answer 12

Quantity

Question 13

X-ray quantity is _______ to mAs.

Answer 13

Proportional

Question 14

X-ray quantity is proportional to _____.

Answer 14

kVp2

Question 15

X-ray quantity is _____ proportional to the square of the distance from the source.

Answer 15

Inversely

Question 16

When SID is ______, mAs must be increased by SID2 to maintain constant exposure to the image receptor.

Answer 16

Increased

Question 17

What does adding filtration to the useful x-ray beam reduce?

Answer 17

Patient dose

Question 18

Penetrability is one description of the ability of an x-ray beam to pass through ______.

Answer 18

Tissue

Question 19

Attenuation is the ______ in x-ray intensity that results from absorption and scattering

Answer 19

Reduction

Question 20

What is the best method for specifying x-ray quality?

Answer 20

HVL

Question 21

X-ray beam quality can be identified by ___ or filtration, but HVL is most appropriate.

Answer 21

kVp

Question 22

Increasing kVp ______ the quality of an x-ray beam.

Answer 22

Increases

Question 23

Increasing _____ increases the quality of an x-ray beam.

Answer 23

Filtration

Question 24

Added filtration results in increased ____.

Answer 24

HVL

Question 25

The term x-ray ______ is often used instead of x-ray intensity or x-ray quantity.

Answer 25

Exposure

Question 26

X-ray beam hardening ______ the number of high energy x-rays in the beam by removing lower energy x-rays.

Answer 26

Increases

Question 27

The penetrability of an x-ray beam is called…

Answer 27

Quality

Question 28

A diagnostic x-ray beam usually has an HVL in the range of _____ mm AL or 3-6 cm of soft tissue.

Answer 28

3-5

Question 29

What is a compensating filter?

Answer 29

Filter that compensates for differences in subject matter