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DR Course - Chapter 3 quiz

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1. A black and white monitor with 8 bit depth can display ______ shades of grey
0256 4096 8 Black, 8 White 4 Black, 4 White
2. A monitor display resolution setting of 1920 x 1080 will display how many pixels?
5,174 4,096 2,073,600 4,400
3. The data file size will be greatest with a scan of
025 Micron 050 Micron 100 Micron 200 Micron
4. For most commonly used Constant Potential (CP) X-Ray imaging chains, previously used for film
any digital mode will work no digital imaging mode will work only computed tomography will work Computer Tomography (CR) can often be effectively used
5. CR images can only be transferred from computer hard drive to computer hard drive and not portable medium such as USB
True False
6. Nano-focus and Micro-focus X-Ray systems
Provide very high intensity Provide Very high energy Are often open tube types with demountable filaments Are often dual focus
7. A 0.3 millimeter (mm) focal spot size in an X-Ray tube would be considered
Mini-Focus Nano-Focus Micro-Focus Conventional-Focus
8. Isotope use with digital imaging is common for
Real Time Radioscopy (RTR) at the airport Digital Detector Array (DDA) in casting houses Charge Coupled Devices (CCD) in field operations Computer Radiography (CR) in field operations
9. The raw digital image file must always be saved for
archival purposes training purposes audit purposes DICONDE compliance
10. Which X-Ray Generator produces a more useful output for Computed Radiography (CR) and Digital Detector Arrays (DDA)
Low Frequency Medium Frequency High Frequency All Frequencies are equal.
11. RAID Stands for
Repetitive Arrangement of Independent Disks Repetitive Array of Inexpensive Disks Redundant Array of Independent Disks Repetitive Arrangement of Inexpensive Disk
12. Beam filters are typically used in which radiographic modality?
CR DR Film RTX All of the above
13. The X-Ray tube Heel Effect is caused by
operating the x-ray tube with the beam horizontal placing wedge filters in the x-ray beam different path lengths for electrons to the anode misaligned collimation
14. A generic term used for describing a programmable electronic device that can store, retrieve and process data is
network thin client protocol computer
15. What keeps the radio frequencies generated within the computer electronics from interfering with outside devices?
The Case The Motherboard The CPU The bus
16. What is the largest circuitry board in the computer?
CPU Mother Board Sound Board Memory Board
17. Random Access Memory (RAM) will retain stored information after the computer has been shut down.
True False
18. Which is considered to be the most versatile type of port found on a computer?
IDE Port Parallel Port USB Port SCSI Port
19. What part of a computer is meant to take the brunt force during a power surge?
Motherboard CPU Power Supply Graphics Card
20. Which of the following are network classifications based on geographic location?
Local Area Network Wide Area Network
21. Which type of netwrok does a centralized computer have control over the entire network?
Peer-to-Peer Server Based Client Based All of the above
22. On a server based network, each computer is considered equal.
True False
23. Which of the following types of computers found on a network can work independently of the network and process/manage it's own files, while still sharing printing and storage?
Thin Client Thick Client Server All of the above
24. Which of the following network communication medium has a single conductive wire surrounded by a grounded shield of braded wire?
Coaxial Cable Twisted Pair Cable Fiber Optic Cable
25. Which of the following is the most delicate network communication medium?
Coaxial Cable Twisted Pair Cable Fiber Optic Cable
26. What device can scan an analog film radiograph for file storage on a computer?
Film Imager Image Manager Film Digitizer Image Server
27. The use of film digitization is primarily for
Ease of reading Achriving Film Images Enhancement of Film Images All of the above None of the above
28. Which is an advantage of filtering the x-ray beam?
Filtering prevents the energy from being converted to heat making 100% x-rays It increases the width of the X-Ray beam It removes wavelengths of radiation that are softer and less penetrating, reducing scatter and noise. Filtering reduces the anode heat load.
29. What is a disadvantage of a smaller focal spot size target on the X-Ray tube?
Reduced Spatial Resolution Increased Penumbra Reduced Detector Efficiency Reduced Heat Capacity
30. Beam attenuation can be defined as
The phenomenon by which artifaces results when lower-energy photons are preferentially absorbed, leaving only higher-intensity photons to strike the detector array The phenomenon by which an X-Ray beam passing through a structure is decreased in intensity or amount from partial absorbtion and interaction with matter X-Ray energy that is produced from bombarding a substance with fast-moving electrons The ability of the detector to capture transmitted photons and change them to electronic signals
31. The best component in a digital radiograph system will determine the resolution within the resultant image
True False
32. A firewall is a form of security that controls traffic between a single computer and a network in an environment with no security such as the internet.
True False
33. Which of the following is NOT an advantage to digitizing radiographs?
Allows the radiographer to view the image in a new way Provides electronic access to images. Image can be uploaded to a networked computer for storage and retrieval. Artifacts originating on the X-ray film can be removed from the digital image.