Unit 1

Question 1

6 foot cord with deadman switch

Answer 1

6 foot rule

Question 2

Most popular type of mobile equipment

Answer 2

Battery operated

Question 3

When was fluoroscopy invented

Answer 3

1896 by Thomas Edison

Question 4

What is dynamic imaging

Answer 4

Live

Question 5

Fluoro equipment can be over table or under table tube units T/F

Answer 5

True

Question 6

Fluoro X-ray tubes use what kind of mA

Answer 6

Lower mA - 0.5-5mA. (Diagnostic operates at 50-1200 mA)

Question 7

Fixed tube target to prevent SOD of ______ than 15”

Answer 7

Less

Question 8

Designed to convert remnant radiation from the patient to an amplified light image

Answer 8

Image intensification tube

Question 9

Emission of light is called

Answer 9

Photoemission

Question 10

The input fluorescent coating is

Answer 10

0.1-0.2mm sodium-activated cesium iodine (Csl)

Question 11

T/F the output screen absorbs the electrons and emits light photons

Answer 11

True

Question 12

Silver activated zinc-cadmium sulfide phosphor

Answer 12

Output screen

Question 13

The measurement of the increase in image intensity achieved by an image intensification tube

Answer 13

Total brightness gain

Question 14

Total brightness gain/ minification gain formula

Answer 14

Minification gain= input screen diameter (squared)/ output screen diameter (squared)

Question 15

The measurement of the increase in light photons due to the conversion efficiency of the output screen

Answer 15

Flux gain

Question 16

Unit of luminous intensity

Answer 16

Candelas (cd) (fluoro image brightness)

Question 17

T/F flux gain causes a decrease in image quality

Answer 17

True

Question 18

Total brightness gain formula

Answer 18

Brightness gain= minification gain x flux gain

Question 19

Part of the video camera system- has fast response time to input info- does not change exposure factors- works with electronic signal

Answer 19

AGC automatic gain control

Question 20

What is contrast affected by

Answer 20

Scatter,
penumbral (partial) light scatter in the input and output screens,
light scatter within the image intensification tube

Question 21

Warps the appearance of the image formed

Answer 21

Pincushion

Question 22

TFT

Answer 22

Thin film transistor

Question 23

Advantages of digital fluoro

Answer 23

High contrast
Low dose
Exam speed

Question 24

Distance from the center of one pixel to the center of the next one in the display

Answer 24

Pixel pitch

Question 25

_ bit processing (_____shades of gray/pixel)

Answer 25

8. 256

Question 26

Tabletop exposure should not exceed

Answer 26

10R/min. Most range 1-3R/min-100mGy/min

Question 27

Minimum SSD______for mobile and ______for stationary

Answer 27

12”/15”

Question 28

Lead apron______
Lead gloves______
Lead shield/Bucky cover______
Lead curtain______

Answer 28

0.5mm Pb/eq
0.5mm Pb/eq
0.25mm Pb/eq
0.25mm Pb/eq