Chapter 7 Quiz

Question 1

All of the following are components of a fluoro system EXCEPT:

a.) video monitoring system
b.) image plate reader
c.) xray tube
d.) generator
e.) image intensifier

Answer 1

b.) image plate reader

Question 2

Reproducibility for fluoro equipment should be within:

a.) 5%
b.) 10%
c.) 3%
d.) 2%

Answer 2

a.) 5%

Question 3

Performance testing should be performed every ____________.

a.) month
b.) week
c.) 6 months
d.) year

Answer 3

c.) 6 months

Question 4

Making a 30 second exposure at maximum kvp and ma is testing the:

a.) reciprocity
b.) ma accuracy
c.) kvp accuracy
d.) heat sensor

Answer 4

d.) heat sensor

Question 5

The maximum ESE for fluoro is:

a.) 50 R/min
b.) 10 R/min
c.) 150 R/min
d.) 100 R/min

Answer 5

b.) 10 R/min

Question 6

Which of the following is not a “tube” type of television camera?

a.) CCD
b.) orthicon
c.) plumbicon
d.) vidocon

Answer 6

a.) CCD

Question 7

Which part of an image intensifier is made of cesium iodide?

a.) output phosphor
b.) input phosphor
c.) rotating anode
d.) photocathode

Answer 7

b.) input phosphor

Question 8

What are the three types of electric display devices?

a.) LCD
b.) TFT
c.) CRT
d.) plasma

Answer 8

a.) LCD
c.) CRT
d.) plasma

Question 9

A motion picture camera is called:

a.) DVR
b.) spot film camera
c.) cinefluorography
d.) spot film device

Answer 9

c.) cinefluorography

Question 10

Which part of the image intensifier absorbss light and emits electrons?

a.) input phosphor
b.) photocathode
c.) output phosphor
d.) rotating anode

Answer 10

b.) photocathode

Question 11

The ability to resolve relatively large objects with similar density is called:

a.) low contrast resolution
b.) minification
c.) flux gaIn
d.) high contrast resolution

Answer 11

a.) low contrast resolution

Question 12

Which part of an image intensifier is made of zinc and cadmium?

a.) rotating anode
b.) input phosphor
c.) photocathode
d.) output phosphor

Answer 12

d.) output phosphor

Question 13

Fluoro equipment should always have the following inspections:

a.) performance
b.) enviromental
c.) digital
d.) visual

Answer 13

a.) performance
b.) enviromental
d.) visual

Question 14

An artifact caused by magnetic field is called:

a.) S distortion
b.) vignetting
c.) barrel disortion
d.) pincushion distortion

Answer 14

a.) S distortion

Question 15

In digital fluoroscopy, the _____________ adjusts radiation output for changes in part thickness.

a.) HVL
b.) PBL
c.) AEC
d.) AERC

Answer 15

d.) AERC

Question 16

_____________ is useful in myelograms and arthrograms when an image is necessary to be on the display monitor but the xray beam is off.

a.) image restoration
b.) last image hold
c.) road mapping
d.) filtering

Answer 16

b.) last image hold

Question 17

In digital fluoroscopy which part of the flat panel detector absorbs xrays and emits light?

a.) none of these
b.) input phosphor
c.) output phosphor
d.) rotating anode

Answer 17

a.) none of these

Question 18

Which part of an image intensifier is made of cesium and antimony?

a.) input phosphor
b.) photocathode
c.) output phosphor
d.) rotating anode

Answer 18

b.) photocathode

Question 19

What are the two ways that the output phosphor and the television camera can be linked?
1.) CCD
2.) orthicon
3.) lens coupling
4.) fiber optics
5.) closed circuit TV

a.) 3 and 4
b.) 1 and 2
c.) 2 and 5
d.) 1 and 5

Answer 19

a.) 3 and 4

Question 20

A decrease in brightness at the lateral edges of the image is called:

a.) vignetting
b.) veiling glare
c.) S distortion
d.) barrel distortion

Answer 20

a.) vignetting

Question 21

For a non DR system, the most common type of image intensifier is the:

a.) tube type
b.) flat panel

Answer 21

a.) tube type

Question 22

A heat sensor alarm should activate when ______% of the heat capicity is acheived.

Answer 22

75%

Question 23

Which of the following is not part of the image intensifier tube?

a.) anode
b.) filament
c.) output phosphor
d.) photocathode

Answer 23

b.) filament

Question 24

Which mode results in higher patient dose?

a.) flux gain
b.) magnification
c.) minification

Answer 24

b.) magnification