Practice test combined PACS and FLuoro

input phosphor

what component of the image intensifier converts the exit radiation to visible light

both a and b

A CCD or camera tube can be connected to the output phosphor by which of the following

fiber optic bundles

optical lens systems

input phosphor

both a and b

a and b only

brightness gain is a product of which of the following

minification gain

flux gain

automatic brightness control

all of the above

a and b only

50

a brightness gain of 50,000 would have a conversion factor of

automatic brightness control

which of the following automatically adjusts the tech factors of the fluoroscopy machine to maintain the overall appearance of the fluoro image

all of the above

which of the following statements are true regarding CCD

they are more sensitive to a wider range of light intensities

work well with digital imaging systems

no geometric distortion of the image

All of the above

15 inches

the ssd should be no less than ______ when using a stationary fluoroscopy unit

photocathode

what component of the II converts the visible light to electrons

10 R/min or 100 mGy/min

when using fluoroscopic units with ABC, the x-ray exposure at the tabletop should not exceed

conversion factor

output phosphor illumination divided by the input phosphor exposure rate will give you

Electrostatic focusing lenses

this component of the II is responsible for focusing the stream of electrons

brightness gain

minification gain multiplied by flux gain gives you which of the following

minification gain

di/do squared is the formula for what

CCD

this is a device that generates an electrical charge when stimulated by light and stores this charge in a capacitor

cesium iodide

what makes the input phosphor

zinc cadmium sulfide

what material makes the output phosphor

amorphous sillicon

a flat panel indirect system is made of

b and c

which of the following statements are true of a flat panel fluoroscopy system

they degrade with age

better CR

lower patient dose

slightly heavier than the conventional II

all of the above

b and c

alarm after 5 min of active fluoroscopy

which of the following are radiation safety practices to reduce patient dose

all of the above

what can be documented in the patient chart to track patient dose/exposure

DAP

Air kerma

Fluoroscopy time and number of image

all of the above

a and c

resolution

number of pixels contained on a display is known as

system architecture

this is the hardware and software infrastructure of a computer system

application service provider

ASP stands for

both a and b

ASP provides which of the following

disaster recovery

affordable long-term storage

secure firewall

both a and b

both a and c

RAID 5

in which RAID level are all the image data and parity striped across all connected disks

HL7

this is the standard of maintaining the privacy of digital records

image noise

which of the following is NOT part of the system architecture

image acquisition

Image display

Image archive

image noise

CCD digitizer

which of the following is a peripheral PACS device

CCD digitizer

image stitching

image reversal

image annotation

processing power, storage, connectivity, and user experience

what are the 4 main components to any system architecture

HL7

the his and ris communicate using

UDO

which of the following is a type of optical disk used for long term storage

LTO

DAS

UDO

SAIT

all of the above are magnetic tape technologies

which of the following is a type of magnetic tape technologies

LTO

SAIT

AIT

All of the above are magnetic tape technologies

true

True or False

Vidicon is the most common

type of camera tube.

C.

What is another name for

fluoroscopy?

A. dynamic imaging

B. live imaging

C. both a and b

b

What is the benefit of

magnification mode in an II

system?

a. Decreases patient does

b. Improves spatial resolution

c. Does nothing

d. Decreases contrast

false

True or False

Image intensification fluoroscopic

systems are much smaller and

lighter than flat panel digital

systems.

false

true or False

An advantage of flat panel detectors

is that it has a wide dynamic range

with 50% lower dose, but does not

have better contrast resolution

true

True or False

Flat panel digital fluoroscopy

units provide a lower patient dose

that traditional image

intensification units.

c. 15

An SSD of no less than how many

inches should be used for stationary

fluoroscopy units

a. 8

b. 12

c. 15

d. 17

D. 16:1

What grid ration is most

commonly used with fluoroscopic

units?

A. 5:1

B. 8:1

C. 12:1

D. 16:1

b. 100

X-Ray exposure at tabletop

should not exceed how many

mGy per min for units with ABC?

a. 10

b. 100

c. 8

d. 200

false

True or False

Minification gain is the reduction

in size of the input phosphor

image compared with the output

phosphor image

C. Larger than the vidicon camera tube

Which of the following is not an advantage of

a CCD over a camera tube:

A. more sensitive to a wider range of light

intensities

B. No geometric distortion of the image

C. Larger than the vidicon camera tube

D. Works well in digital imaging systems

flat panel digital fluoro unit

Which provides better

contrast resolution a flat panel

digital fluoroscopic unit or and

image intensification system?

D. 100 Gy

X-ray exposure at tabletop should

not exceed ______ per minute for

units with ABC.

A. 100 Gy

B. 10 Gy

C. 20 Gy

D. 100 mGy

.5 to 5 mA

What range of mA is used in

dynamic imaging?

D. Both A and B

Which of the following are

downfalls to using magnification

mode in an image intensified

system?

A. shape distortion

B. increased patient dose

C. decreased spatial

resolution

D. Both A and B

output phosphor

Which component of the

image intensifier changes

electrons into visible light?

CCD & Camera tube

What are 2 types of viewing systems?

D. A and C

a large fill factor is a problem with:

A. Direct capture

B. Barium fluorohalide capture

C. Indirect Capture

D. A and C

E. B and C

d. Only dynamic images

Which of the following is not an advantage

of flat panel detectors?

a. More durable, but smaller in

size and bulk

b. Wider dynamic range

c. 50% lower does and post-

processing options

d. Only dynamic images

e. All the above

smaller

A brighter image is created

when electrons strike a

smaller/larger output

phosphor?

input phosphor

Which component of the

image intensifier changes x-

rays into light?

ADC – analog to digital converter

Which component changes

the video signal to bits so that

it can appear on the viewing

screen?

CCD

Which type of viewing system is

more light sensitive, has a wider

range, and decreases image

noise

true

True or False

Fluoroscopy in radiographic

mode has a higher radiation

dose than in fluoroscopy

mode.

true

True or False

The two types of flat panel

detectors used in fluoroscopic

image are Cesium iodide

amorphous silicon indirect

capture and Amorphous selenium

direct–capture.

increase dose

What effect will Magnification

Mode have on patient dose

when using an II system?

true

True or False

Current dynamic digital

detectors can produce images

at 60 frames/seconds.

A.

Curved distortion is involved with

the ___________

______________ in an II system.

A. magnification mode using

an image intensifier

B. ABC

C. electrostatic focusing

lens

D. all of the above

true

True or False

A fluoroscopy unit with an Image

intensifier will require an increase

of technique over time due to

degradation.

A. indirect amorphous silicon

Which flat panel detector system

is currently most widely used?

A. indirect amorphous silicon

B. direct amorphous

selenium

false

true or False

You receive a much higher

radiation dose when in

fluoroscopy mode versus

radiographic mode

false

True or False

A direct capture detector

contains cesium iodide

amorphous silicon.

false

True or False

The cassette spot filming

recording system uses half the

dose compared to film camera

systems.

e. a and b only

Which of the following components are

connected to the output phosphor to

capture the light emitted and change it to a

video signal?

a. CCD

b. camera tube

c. spot film device

d. all of the above

e. a and b only

photocathode

Which component of the

image intensifier changes light

into electrons?

Electron gun and photoconductive target assembly ( the coils)

What two things are contained

within the vacuum of viewing

systems?

B: Flux Gain

Acceleration of electrons so that more

light is produced when hitting the

output phosphor defines:

A: Brightness Gain

B: Flux Gain

C: Minification Gain

A. Charge Coupled Device

The light-sensitive semiconducting

device that generates an electrical

charge when stimulated by light and

stores charge in a capacitor is:

A. Charge Coupled Device

B. Cathode Ray Tube

C. Electron Gun

D. Image intensifier

false

True or False

Distortion is not an issue with

image-intensified fluoroscopy.

false

True or False

Increasing the x-ray exposure

time, decreases the exposure

to the patient and any

personnel remaining in the

room.