CR system

Question 0

What type of laser is used in a CR machine

Answer 0

A class 3B laser

Question 1

What allows for high resolution images with high fidelity across the entire image in a CR machine

Answer 1

A flat scan path

Question 2

What allows images to be stored in many different file formats while allowing users to adjust, view, print and transfer images all in one application

Answer 2

STARRview

Question 3

What is known as the differences in the amount of absorbs energy from place to place in the plate (IP)

Answer 3

Contrast

Question 4

What dictates spatial resolution of an image

Answer 4

Scanning process and IP type

Question 5

The front screen (lead screen) is not required until energy reaches what KV range

Answer 5

150 to 160

Question 6

How big of a lead screen should be used for back scatter prevention

Answer 6

1/8th inch

Question 7

Exposure time should be what

Answer 7

As long as practical (without causing saturation)

Question 8

All IP’s are what

Answer 8

Made of the same type of polyester plastic substrate as modern x-ray films unlike most x-ray films IP’s are all single-sided and the thickness of the sensitive layer is greater than for film emulsion layers

Question 9

What is the normal wear out mechanism for IPs

Answer 9

Mechanical damage or abrasion

Question 10

Blank resolution IP’s are needed for crack detection where blank resolution IP’s can be used for FOD

Answer 10

Higher and lower

Question 11

The red laser light is focused to a small range of microns what is that range?

Answer 11

50-200 microns (50 microns equals .002 inch

Question 12

what determines spatial resolution

Answer 12

The size of the laser light determines the smallest image features that can be possibly spatially resolved

Question 13

What determines the actual image resolution limit

Answer 13

The blue emissions spot

Question 14

What should the PMT voltage/gain sitting be set to

Answer 14

As low as possible without affecting steeple operation of the PMT

Question 15

What is the process of changing the electrical signals emitted by the PMT into a visible representation that can be viewed as an image

Answer 15

Display conversion

Question 16

The CR system A/E99D-3 is a portable CR system consisting of five major parts what are those parts?

Answer 16

Scanner (78 pounds)
 monitor (29 pounds)
 CPU (XX pounds) 
ABR (9.7 pounds) 
imaging plates

Question 17

What are the power for the scanner

Answer 17

110 +/- 10 VAC, 50/60Hz or 23 +/- 10 VAC, 50/60Hz,

Question 18

How many shades of gray?

Answer 18

65,535

Question 19

What is the resolution of the monitor

Answer 19

2048 X 1536

Question 20

How many hard drives

Answer 20

To

Question 21

What is the maximum output power capacity for the AVR

Answer 21

1200 W or 1200 VA

Question 22

What is the nominal output voltage for the AVR

Answer 22

110,120, or 127

Question 23

How many outlets Does the AVR have

Answer 23

Four

Question 24

What is the operating temperature of the AVR

Answer 24

32-104°F

Question 25

What are the plate sizes

Answer 25

5 x 7, 10 x 12, 14 x 17,

Question 26

What is the temperature range of the imaging plate

Answer 26

-40° - +120°F

Question 27

What is the focal spot size of the laser

Answer 27

50 microns

Question 28

what keeps the Red light from reaching the photomultiplier tubes (PMT)

Answer 28

Blue glass filters

Question 29

What are five tools not intended for Navy or Marine Corps use

Answer 29

``` Density mapper calibrate gradient pipe gradient analysis calibrate 5 point sample dynamic ranging filter ```

Question 30

What is the intensity scale the histogram

Answer 30

0 to 65,500

Question 31

Up-and-down changes what? Left and right changes what?

Answer 31

Window and level respectively

Question 32

The magnifier presents a simple how many times magnification?

Answer 32

Two times

Question 33

Process control tests are split into what three types?

Answer 33

Display monitor tests system tests IP tests