X-ray Emission Spectrum Ch 8 Flashcards Preview

Jerry's Image Production > X-ray Emission Spectrum Ch 8 > Flashcards

Flashcards in X-ray Emission Spectrum Ch 8 Deck (29):
1

What is the y axis?

Quantity

2

What is the x axis?

Quality

3

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

Equivalent

4

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

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

5

What factor does mAs control?

Quantity (y axis)

6

Added filtration will reduce beam intensity while _____ the average energy

Increasing

7

What happens to the curve when mA is adjusted?

Amplitude of the spectrum goes up or down

8

What happens to the curve when kVp is adjusted?

The amplitude and position is effected

9

What happens to the curve when filtration is added?

Amplitude goes down and curve leans slightly to the right

10

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

It is enhanced

11

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

Quantity and Quality

12

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

Quantity

13

X-ray quantity is _______ to mAs.

Proportional

14

X-ray quantity is proportional to _____.

kVp2

15

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

Inversely

16

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

Increased

17

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

Patient dose

18

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

Tissue

19

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

Reduction

20

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

HVL

21

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

kVp

22

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

Increases

23

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

Filtration

24

Added filtration results in increased ____.

HVL

25

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

Exposure

26

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

Increases

27

The penetrability of an x-ray beam is called...

Quality

28

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

3-5

29

What is a compensating filter?

Filter that compensates for differences in subject matter