CT Registry Review - System Operation & Components

Computed Tomography, or CT has also been commonly referred to as what?
1. Computed Axial Tomography
2. CAT
3. Neither A or B
4. Both A & B
T/F: The electronic signals sent to the table, gantry and high voltage generator must be converted into analog waveform.
1. True
2. False
Where Does the Technologist initiate instructional commands?
1. At the Gantry
2. Into the PACS Server
3. From the CT System Console
4. Standing on the patients right side
The Scan Controler is responsible for the timing and operation of what?
1. Patient Table
2. Gantry
3. High Voltage Generator
4. All the above
What type of information can be entered at the CT Console?
1. Imaging Parameters
2. Post-Processing Techniques
3. Filming & Archiving instructions
4. A and C only
5. All of the above
Each command is shuttled through the _____________, as it is ___________ into the system's machine language.
1. gantry, placed
2. host computer, translated
3. ER Doctor, checked
4. Hospital, translated
Where is each command sent to after it is translated into the system's machine language?
1. The Scan Controller
2. The A-to-D converter
3. The High Voltage Generator
4. The D-to-A converter
What is another name for "Analog" waveform?
1. RF Waveform
2. Continuous Waveform
3. Invisible Waveform
4. Digital Waveform
The Gantry contains some of the most important components of the scanner including...
1. The CT x-ray tube
2. The Detectors
3. The Scan Controller
4. A & B only
T/F: The conversion of electronic signal output from the scan controller into analog waveform is carried out by the A-to-D Converter.
1. True
2. False
Which major system components operate using analog waveform?
1. The CT Table
2. The Sample and Hold component
3. The Gantry
4. The High Voltage Generator
5. All of the above
6. A, C and D only
What System Component is responsible for converting the digital signal into analog form?
1. High Voltage Generator
2. A-to-D Converter
3. Flux Capacitor
4. D-to-A Converter
What does DAC stand for?
What are the two most notable components located in the gantry?
1. Emergency Shut-Off Button
2. Detector Elements
3. Acrylic Slip-Ring
4. X-Ray Tube
5. High Frequency Transformer
What System Component is necessary to produce the high voltage potential that exists between the cathode and the anode?
What gantry component collects attenuation information?
1. The Sample-and-Hold component
2. The Detectors
3. The Flux Capacitor
4. The mA meter
What System Component measures the attenuation information exiting the patient?
T/F: The detector elements convert exit radiation measurements into very weak electrical signals.
1. True
2. False
Where are the tiny electrical sifnals from the detectors sent to?
In what electrical form does the amplifier output it's signal/information?
1. Continuous
2. Digital
3. Analog
4. Compressed
Where does the analog signal go to after it leaves the amplifier component?
1. The Host Computer
2. The Scan Controler
3. The Sample-and-Hold Component (S/H)
4. The A-to-D Converter
T/F: The digital signal leaves the Sample-and -Hold Component to be converted to an analog signal in the D-to-A converter.
1. True
2. False
Where is the digitized information stored after it leaves the DAC (D-to-A Converter)?
1. On the PACS server
2. In the Sample-and-Hold Component
3. In a Raw Data File
4. In the Array Processor
IN which system component is data calculated into an image?
T/F: After leaving the array processor, the calculated image goes to the host computer for display and storage.

CT Registry Review - System Operation & Components - Question Set 1

Questions 1-25