Exam Review-Unit One

Question 1

When were x rays discovered?

Answer 1

Nov. 5, 1895

Question 2

Who discovered x rays and how was it discovered?

Answer 2

Sir Wilhelm Rontgen, he was investigating cathode rays in a Crookes tube when he created a fluorescent effect on a barium platinocyanide screen

Question 3

Who first used x rays for clinical use and when?

Answer 3

John Hall Edwards in 1896-he visualized a needle in a hand

Question 4

What are the 4 types of image receptors?

Answer 4

1. Solid-state digital detectors-direct radiography
2. Computed Radiography-indirect radiography
3. Fluoroscopic IRs
4. Film cassettes

Question 5

What are the effects of a closer SID?

Answer 5

1. Magnification
2. Increase detail
3. Increased patient dose

Question 6

What 5 actions should be preformed before imaging?

Answer 6

1. Ensure patient ID
2. Obtain clinical history
3. Verify order
4. Obtain consent
5. Rule out pregnancy

Question 7

What are the 3 concepts to achieve ALARA?

Answer 7

1. Time
2. Distance
3. Shielding

Question 8

What are 5 ways to achieve ALARA

Answer 8

1. Minimize repeats
2. Proper filtration
3. Proper collimation
4. Shielding
5. Higher kVps, lower mAs

Question 9

What should the annual dose be for a rad tech?

Answer 9

Less than 20 mSv

Question 10

List 5 ways to control patient movement during an X-ray

Answer 10

1. Give the patient clear instructions
2. Use support devices
3. Reduce exposure time
4. Immobilize if necessary
5. Make patient comfortable

Question 11

What are the 4 positions for the radial head series?

Answer 11

Hand supinated
Hand in lateral position
Hand pronated
Hand internally rotated