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Imaging Equipment

Total questions: 40

Worksheet time: 30mins

Name
Class
Date
1.

Designed to supply precise Voltage to the Filament and high voltage circuits of the x-ray machine.

a)

High Voltage Transformer

b)

Automatic Exposure Control

c)

Filament Circuit

d)

Autotransformer

2.

The most common timer used today and is accurate up to one millisecond.

a)

Exposure Timer

b)

Electronic Timer

c)

Mechanical Timer

d)

Synchronous Timer

3.

This type of generator is designed to produce radiographic exposure in the shortest possible time by operating the x-ray tube at the highest mA setting without exceeding tube heat capacity

a)

High Voltage Generator

b)

Filament Generator

c)

Falling Load Generator

d)

Failing Load Generator

4.

This equipment makes specific exposure time that cannot be set and can only be used by AEC

a)

Synchronous Timer

b)

Falling Load Generator

c)

Filament Circuit

d)

Line Compensator

5.

This is another name for a step-up transformer.

a)

Filament Circuit

b)

mA Control Panel

c)

Operator Console

d)

High Voltage Transformer

6.

This equipment converts low supply voltage into kilovoltage of a proper waveform.

a)

Filament Circuit

b)

Autotransformer

c)

High Voltage Transformer

d)

Full Wave Rectification

7.

This transformer's secondary voltage is greater than the primary voltage because of the number of windings is greater in the secondary side than the primary.

a)

High Voltage Transformer

b)

Filament Transformer

c)

Autotransformer

d)

Single Transformer

8.

This equipment supplies voltage to the x-ray unit and can vary as much as 5%

a)

Autotransformer

b)

Rectifiers

c)

Line Compensator

d)

Cathode

9.

What is the shortest time that an AEC uses

a)

.01 ms

b)

.1 ms

c)

1 ms

d)

2 ms

10.

The process of converting AC to DC.

a)

Rectification

b)

Line Focus Principle

c)

Anode Heel Effect

d)

Autotransformer

11.

Produces a waveform resulting in a pulsating x-ray beam caused by an alternate swinging in voltage from 0 to maximum potential.

a)

Single Phase Power

b)

Six Phase Power

c)

Twelve Phase Power

d)

Half Wave Rectification

12.

What helps in the conversion of AC in transformers into DC so that x-ray tubes can operate.

a)

Diodes

b)

Voltage

c)

Transformer

d)

Capacitor

13.

Three principle parts for Diagnostic Medical X-Ray Units include:

a)

Cathode

b)

Anode

c)

X-Ray Tube

d)

Operating Console

e)

High Voltage Transformer

14.

_______ phase _____ pulse has a _____ voltage ripple.

a)

Three; 6; 100%

b)

Three; 12; 4%

c)

Single; no pulse; 80%

d)

Three; 18; 70%

15.

The target angle may be _ to _ degrees; depending on the tube design?

a)

20 to 30

b)

1 to 10

c)

7 to 20

d)

35 to 40

16.

Rotation of the target is stopped by which type of motor?

a)

Self-induction

b)

Static

c)

Electromagnetic

d)

Induction

17.

Filaments are made of what kind of material?

a)

Silver

b)

Tungsten

c)

Gold

d)

Platinum

18.

Vaporization of what material can lead to tube failure?

a)

Tungsten

b)

Aluminum

c)

Lead

d)

Copper

19.

"The larger the actual focal spot, the greater the heat capacity; the smaller the effective focal spot, the greater the radiographic image sharpness" defines:

a)

Dual-focus tube

b)

Magnification technique

c)

Anode heel effect

d)

Line focus principle

20.

What is contained within the x-ray tube to prevent the filament's electrons from colliding with the atoms of gas?

a)

Metal anode

b)

Vacuum

c)

Sterile air

d)

Plastic cathode

21.

How many windings does an autotransformer have?

a)

1

b)

2

c)

3

d)

4

22.

How long will the energy stay in a CR imaging plate before it dissipates?

a)

2 Hours

b)

10 Hours

c)

8 Hours

d)

24 Hours

23.

Cesium Iodide is used for what component of an Image Intensifier?

a)

Focusing Lenses

b)

Photocathode

c)

Output Phosphor

d)

Input Phosphor

24.

Select all that applies: Magnification mode increases ______

a)

Patient Dose

b)

Spatial Resolution

c)

Contrast Resolution

d)

FOV

25.

There are 2 types of Camera Tubes, select the two types.

a)

Vidicon

b)

Genesis

c)

CCD

d)

Plumbicon

26.

For a CCD, which type of coupling to an image intensifier is BEST/preferred?

a)

Lens System

b)

Fiber Optics

c)

Vertically

d)

Mirror System

27.

Fluoroscopy units ESE shall not exceed ______ under normal operations

a)

100 mGy/min or 10 R/min

b)

200 mGy/min or 20 R/min

c)

50 mGy/min or 5 R/min

d)

300 mGy/min or 30 R/min

28.

The two types of AEC are _____ and ______

a)

Photo timer

b)

Ionization Chambers

c)

Conventional Chambers

d)

Digital AEC

29.

When doing a Chest X-Ray, which chamber do you want to line up with on the IR?

a)

Left Chamber

b)

Right Chamber

c)

Middle Chamber

d)

Both A and B

30.

In conventional fluoroscopy, what mA is used?

a)

5 mA

b)

10 mA

c)

15 mA

d)

2 mA

31.

Who invented Fluoroscopy?

a)

Thomas Edison

b)

Ben Franklin

c)

Gustav Bucky

d)

Albert Einstein

32.

Select all that applies: What are the 3 layers of a Television Camera Tube?

a)

Face plate

b)

Signal plate

c)

Optical plate

d)

Target plate

33.

In PACS the system architecture normally consists of the following:


Acquisition device + Storage and display workstation + _________

a)

Image management system

b)

Image display system

c)

QA system

d)

DICOM system

34.

RAID ____ is the most common level used because it provides adequate redundancy and fault tolerance?

a)

RAID 0

b)

RAID 1

c)

RAID 5

d)

RAID 3

35.

Proper order of components in DR flat panel system is:

a)

Amorphous selenium, TFT, ADC

b)

TFT, ADC, Amorphous selenium

c)

Amorphous silicon, TFT, ADC

d)

ADC, Amorphous selenium, TFT

36.

Variable mAs chart states that every _______ cm change in thickness the mAs is adjusted by a factor of ____

a)

4-5 cm; factor of 2

b)

6-7 cm; factor of 3

c)

9-10 cm; factor of 4

d)

1-2 cm; factor of 1

37.

Quick Math: You did a pelvis that previously measured 8cm at 80 KvP @ 5 mAs.


New thickness is 16 cm, what is the new mAs?

a)

10 mAs

b)

24 mAs

c)

20 mAs

d)

28 mAs

38.

In an X-Ray system, which restricting device is most commonly used?

a)

Aperature diaphragm

b)

Collimator

c)

Shaped filter

d)

Cone filter

39.

There are 2 types of lasers used in DR:


He Neon + ________

a)

Solid state diode

b)

White light laser

c)

Neon-Neon laser

d)

H Neon

40.

"The system sampling an image as many times as possible without raising patient dose" describes, what term?

a)

DR frequency

b)

Multiple testing functions

c)

Nyquist sampling frequency

d)

Instant sampling