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Test your basic knowledge |
Digital Image Processing
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What is the measure of the differences between the data values referred to as?
contrast
high
CD or DVD
parallel - serial
2. What is high-pass filtering also called?
greater
RAM
edge enhancement filtering or sharpening
CD or DVD
3. What is the information stored as magnetic variations referred to as?
increase
memory
data
RAM - ROM
4. Computer programs are called what?
expansion or compression
reduces
edge enhancement filtering or sharpening
software
5. Electrical connections between the CPU and the other components rung along a system of series or parallel conductors called what?
scanning
1940s
bus
expansion or compression
6. What are devices such as keyboard - touch screen monitors - and voice-activation that you put into or connect to a computer?
slow scanning
pixel size
Input devices
two
7. What permit input/output of information to or from the CPU?
on
ENIAC
filtering
peripherals
8. What provides specific instructions for calculations and sequential steps to be followed?
byte
software
RAM - ROM
binary machine
9. What is the system of conductors that connects the various components of a computer system and permits the CPU to accept inputs from any point along the conductor?
bandwidth
pixel size
health level 7
bus
10. What determines resolution?
on
health level 7
pixel size
Fourier Transformation
11. When detectors acquire their information by ____ they are receiving info from a specific area.
pixel size
scanning
matrix
gray scale bit depth
12. Window width and contrast have an ____ relationship.
inverse
pixel size
RAM - ROM
Fourier Transformation
13. Computerized digital images are described in terms of what
window level
signal-to-noise ratio
number of values displayed per image side
IRs
14. What determines resolution?
memory
pixel size
high
1940s
15. Digital detectors are capable of producing ______ shades of gray.
filtering
1000+
noise
central processing unit
16. What is a square series of boxes that gives form to the image?
low
matrix
numerical value
pixel
17. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.
parallel - serial
Input devices
fine
reduces
18. What are the two ways detectors acquire information?
peripherals
inversely
analog computers
scanning or array detection
19. Noise is ____ related to contrast.
high-pass filtering
1940s
inversely
10 megabyte
20. Fluoroscopic noise mostly comes from what?
pixel
pixel
byte
electronic sources
21. What directs information to and from various parts of the computer?
central processing unit
CD or DVD
increase
increase
22. What type of memory storage devices are required for large amounts of data?
signal-to-noise ratio
software
CD or DVD
computers
23. Fluoroscopic noise mostly comes from what?
electronic sources
number of values displayed per image side
noise
CPU - Bus
24. A high S/N indicates ___ noise in the image.
pixel size
write memory
hardware
little
25. Computer equipment is called what?
smoothing
two
1970s-1990s
hardware
26. What is an individual matrix box or picture element?
pixel
numerical values
fine
byte
27. DICOM imaging now includes compatibility via a database system that includes linage of the patient images with the patient's EMR. This database system is called what?
health level 7
smoothing
transverse - sagittal - and coronal
high
28. What modalities are array processors useful for?
write memory
bit
software
CT and MRI
29. Increased noise = _____ image contrast.
CT and MRI
contrast
expansion or compression
decreased
30. A low contrast image has a ___ frequency.
IRs
smaller
low
binary machine
31. A __ _____ disk will store over 10000000 bytes of information.
10 megabyte
abacus
1970s-1990s
edge enhancement filtering or sharpening
32. What type of memory storage device is inexpensive and the data is stored serially (difficult to access)?
RAM - ROM
Input devices
large amount
magnetic tape
33. What does a 0 in binary code stand for?
contrast
frequency - contrast - and noise
CD or DVD
off
34. All medical imaging is achieved with which type of computers?
digital computers
slow scanning
greater
inversely
35. Computer programs are called what?
CD or DVD
pixel size
software
analog computers
36. Noise is measured as what?
scanning or array detection
signal-to-noise ratio
filtering
RAM
37. The ____ is the heart of the computer while the ___ is the vessels.
analog-to-digital converters
edge enhancement filtering or sharpening
CPU - Bus
low
38. When was ENIAC invented?
software
1945
numerical values
RAM - ROM
39. What is the 'noisiest' component of a digital system?
smoothing
TV camera
numerical value
10 megabyte
40. What is the random background information that does not contribute to the image quality?
computers
RAM
fine
noise
41. What is the name for a binary digit?
program
bit
ROM
window level
42. When detectors acquire their information by ____ they are receiving info from a specific area.
raster scan pattern
central processing unit
inversely
scanning
43. If window width increases - image contrast will ____.
health level 7
monitors and printers
read memory
decrease
44. What is the random background information that does not contribute to the image quality?
high
array detection
noise
DICOM standard
45. What permit input/output of information to or from the CPU?
peripherals
progressive scanning
bandwidth
bus speed
46. What is the digital standard for imaging that is designed to ensure that all equipment fro all manufacturers who choose to adhere to the standard are speaking the same computer language?
DICOM standard
numerical values
CD or DVD
array detection
47. Which type of information consists of collected facts?
low-pass filter
direct
matrix size
data
48. When detectors acquire their information through ____ they are receiving all the info at once.
array detection
mathematical theory - solid-state electronics - and microchip technology
accentuates or suppresses
software
49. Because electrical currents are understood as being either on or off - the binary system consists of information recorded as either a _ for off or a _ for on.
byte
inversely
computer - radiographer
0 - 1
50. Resolution is controlled by what?
expansion or compression
CPU - Bus
matrix size
decreased