11. X-ray Emission Spectra

Question 1

What is the limiting factor of charectorisitc raditation energy?

Answer 1

Atomic number

Question 2

On a graph, label;
1. Max energy
2. Min energy
3. Average beam energy
4. Line spectra

Answer 2

JUST DO IT BRUH

Question 3

What is the end of the graph dependant on?

Answer 3

kVp

Question 4

How do you find the average kVp?

Answer 4

Divide the peak kVp by 3 and 2 to get the range

Question 5

What is the effective beam energy affected by?

Answer 5

1. Waveform
2. Filtration
3. Atomic number

Question 6

What is the line spectra determined by?

Answer 6

The atomic number

Question 7

How can you tell that the atomic number (target material) has changed on a graph?

Answer 7

If the line spectra has moved

Question 8

Using the printed graphs, state what has changed from one curve to the other, and what has stayed the same.

Answer 8

This will defenitly be on the exam….do it josie….josephine….JOSE…JOS..JJ

Question 9

If the average energy of the beam is higher, what happens to the quality of the beam?

Answer 9

Higher quality

Question 10

What is the affect of ripple on maximum energy?

Answer 10

There is no affect

Question 11

If the number of photons has increased, and the height of the spectrum has also increased, what has happened to ripple?

Answer 11

Lower ripple

Question 12

If there is a higher kVp, which way would the max energy move?

Answer 12

Moves further to the right

Question 13

With filtration, as we get to our higher energy level, do we decrease as many photons?

Answer 13

No, not as much

Question 14

What type of radiation can be filtered out by the filter?

Answer 14

Both charectoristic and Bremms

Question 15

What affect does filtration have on the beam and graph?

6

Answer 15

1. Decreases # of photons/Decreases the height of curve
2. Greater reduction of low energy photons
3. Lower patient dose
4. . Increased average energy of beam
5. No affect on max energy

Question 16

If mA is the only thing that changes, what affect does it have on the graph?

Answer 16

1. ONLY increases the height of the curve
2. INcreases all types of photons
3. Intensity is directly proportional to mA
4. No affect on beam energy

Question 17

If there is a higher atomic number, where will the line move?

Answer 17

To the right