WorksheetsImaging Equipment
Total questions: 40
Worksheet time: 30mins
Designed to supply precise Voltage to the Filament and high voltage circuits of the x-ray machine.
High Voltage Transformer
Automatic Exposure Control
Filament Circuit
Autotransformer
The most common timer used today and is accurate up to one millisecond.
Exposure Timer
Electronic Timer
Mechanical Timer
Synchronous Timer
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
High Voltage Generator
Filament Generator
Falling Load Generator
Failing Load Generator
This equipment makes specific exposure time that cannot be set and can only be used by AEC
Synchronous Timer
Falling Load Generator
Filament Circuit
Line Compensator
This is another name for a step-up transformer.
Filament Circuit
mA Control Panel
Operator Console
High Voltage Transformer
This equipment converts low supply voltage into kilovoltage of a proper waveform.
Filament Circuit
Autotransformer
High Voltage Transformer
Full Wave Rectification
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.
High Voltage Transformer
Filament Transformer
Autotransformer
Single Transformer
This equipment supplies voltage to the x-ray unit and can vary as much as 5%
Autotransformer
Rectifiers
Line Compensator
Cathode
What is the shortest time that an AEC uses
.01 ms
.1 ms
1 ms
2 ms
The process of converting AC to DC.
Rectification
Line Focus Principle
Anode Heel Effect
Autotransformer
Produces a waveform resulting in a pulsating x-ray beam caused by an alternate swinging in voltage from 0 to maximum potential.
Single Phase Power
Six Phase Power
Twelve Phase Power
Half Wave Rectification
What helps in the conversion of AC in transformers into DC so that x-ray tubes can operate.
Diodes
Voltage
Transformer
Capacitor
Three principle parts for Diagnostic Medical X-Ray Units include:
Cathode
Anode
X-Ray Tube
Operating Console
High Voltage Transformer
_______ phase _____ pulse has a _____ voltage ripple.
Three; 6; 100%
Three; 12; 4%
Single; no pulse; 80%
Three; 18; 70%
The target angle may be _ to _ degrees; depending on the tube design?
20 to 30
1 to 10
7 to 20
35 to 40
Rotation of the target is stopped by which type of motor?
Self-induction
Static
Electromagnetic
Induction
Filaments are made of what kind of material?
Silver
Tungsten
Gold
Platinum
Vaporization of what material can lead to tube failure?
Tungsten
Aluminum
Lead
Copper
"The larger the actual focal spot, the greater the heat capacity; the smaller the effective focal spot, the greater the radiographic image sharpness" defines:
Dual-focus tube
Magnification technique
Anode heel effect
Line focus principle
What is contained within the x-ray tube to prevent the filament's electrons from colliding with the atoms of gas?
Metal anode
Vacuum
Sterile air
Plastic cathode
How many windings does an autotransformer have?
1
2
3
4
How long will the energy stay in a CR imaging plate before it dissipates?
2 Hours
10 Hours
8 Hours
24 Hours
Cesium Iodide is used for what component of an Image Intensifier?
Focusing Lenses
Photocathode
Output Phosphor
Input Phosphor
Select all that applies: Magnification mode increases ______
Patient Dose
Spatial Resolution
Contrast Resolution
FOV
There are 2 types of Camera Tubes, select the two types.
Vidicon
Genesis
CCD
Plumbicon
For a CCD, which type of coupling to an image intensifier is BEST/preferred?
Lens System
Fiber Optics
Vertically
Mirror System
Fluoroscopy units ESE shall not exceed ______ under normal operations
100 mGy/min or 10 R/min
200 mGy/min or 20 R/min
50 mGy/min or 5 R/min
300 mGy/min or 30 R/min
The two types of AEC are _____ and ______
Photo timer
Ionization Chambers
Conventional Chambers
Digital AEC
When doing a Chest X-Ray, which chamber do you want to line up with on the IR?
Left Chamber
Right Chamber
Middle Chamber
Both A and B
In conventional fluoroscopy, what mA is used?
5 mA
10 mA
15 mA
2 mA
Who invented Fluoroscopy?
Thomas Edison
Ben Franklin
Gustav Bucky
Albert Einstein
Select all that applies: What are the 3 layers of a Television Camera Tube?
Face plate
Signal plate
Optical plate
Target plate
In PACS the system architecture normally consists of the following:
Acquisition device + Storage and display workstation + _________
Image management system
Image display system
QA system
DICOM system
RAID ____ is the most common level used because it provides adequate redundancy and fault tolerance?
RAID 0
RAID 1
RAID 5
RAID 3
Proper order of components in DR flat panel system is:
Amorphous selenium, TFT, ADC
TFT, ADC, Amorphous selenium
Amorphous silicon, TFT, ADC
ADC, Amorphous selenium, TFT
Variable mAs chart states that every _______ cm change in thickness the mAs is adjusted by a factor of ____
4-5 cm; factor of 2
6-7 cm; factor of 3
9-10 cm; factor of 4
1-2 cm; factor of 1
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?
10 mAs
24 mAs
20 mAs
28 mAs
In an X-Ray system, which restricting device is most commonly used?
Aperature diaphragm
Collimator
Shaped filter
Cone filter
There are 2 types of lasers used in DR:
He Neon + ________
Solid state diode
White light laser
Neon-Neon laser
H Neon
"The system sampling an image as many times as possible without raising patient dose" describes, what term?
DR frequency
Multiple testing functions
Nyquist sampling frequency
Instant sampling
