Chapter 1 Part 2 & 3

Question 1

Kilovoltage peak (kVP)

Answer 1

Penetrating power of the x-ray beam

Question 2

Milliamperage (mA)

Answer 2

Controls the quantity or # of x-rays produced

Question 3

Exposure time (ms)

Answer 3

Controls the duration of the exposure usually expressed in milliseconds

Question 4

Milliampere-seconds (mAs)

Answer 4

Measure of radiation produced over a set amount of time

Question 5

Density

Answer 5

Overall blackness on an image. Controlled by mAs and related to patient dose

Question 6

Contrast

Answer 6

Varying shades of grey. Controlled by kVp

Question 7

Image quality factors

Answer 7

• density
• contrast
• spatial resolution
• distortion

Question 8

Grids are used in imaging of thicker body parts (10cm+) and

Answer 8

Cleans of scatter radiation. 2 types- wall and portable

Question 9

IR sizes for CR

Answer 9

• 8 x 10
• 10 x 12
• 14 x 14
• 14 x 17

Question 10

IR sizes for DR

Answer 10

• 8 x 10
• 10 x 12
• 14 x 17
• 17 x 17

Question 11

Motion

Answer 11

Voluntary
Involuntary

Question 12

Voluntary motion

Answer 12

• Breathing
• Movement

Question 13

Involuntary movement

Answer 13

• peristalsis
• tremors
• chills
• heartbeat

Question 14

Patient safety

Answer 14

• ALARA
• shielding
• collimation
• minimize repeats
• image wisely/gently

Question 15

Limiting the size of the x-ray field to the size and shape of

Answer 15

Area of interest. Should be visible on all four sides of the IR. PBL- detent

Question 16

Repeat radiographs

Answer 16

Most important method to prevent unnecessary exposure to patient.

Question 17

Ensure proper patient

Answer 17

• prep
• positioning
• technique