SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. There is a ___ relationship between subject contrast and acquired data contrast.
monitors and printers
ENIAC
direct
progressive scanning
2. If window width increases - image contrast will ____.
pixel size
TV camera
smaller
decrease
3. What does DICOM stand for?
digital imaging and communication in medicine
write memory
peripherals
software
4. What is a square series of boxes that gives form to the image?
1000+
matrix
ENIAC
large amount
5. What is the name of the 'modern electronic computer'?
greater
analog computers
ENIAC
off
6. What was the earliest computer device called?
monitors and printers
binary machine
abacus
1-2 lp/mm
7. Window width and contrast have an ____ relationship.
Fourier Transformation
band-pass filtering
inverse
pixel size
8. Medical imaging is often achieved from information that has been processed by what?
hardware
little
CPU - Bus
analog-to-digital converters
9. What are the two most common output devices?
mathematical theory - solid-state electronics - and microchip technology
accentuates or suppresses
memory
monitors and printers
10. What is required for collection of input information?
detector
smaller
analog-to-digital converters
reduces
11. Around what time did digital computerization come out for CT and US?
electronic sources
decreased
central processing unit
1970s-1990s
12. What is the 'noisiest' component of a digital system?
TV camera
pixel size
bus
1960s
13. 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
low-pass filter
32
program
14. What are the two most common output devices?
Input devices
magnetic tape
Fourier Transformation
monitors and printers
15. If window width increases - image contrast will ____.
ROM
decrease
contrast
detector
16. When detectors acquire their information through ____ they are receiving all the info at once.
scanning or array detection
0 - 1
array detection
matrix
17. What is the primary limitation with the resolution on digital images?
on
decreased
TV camera
raster scan pattern
18. What is the mathematical algorithm used to create all medical images?
signal-to-noise ratio
window
software
Fourier Transformation
19. Which memory replaces new information with the old; can change?
digital imaging and communication in medicine
write memory
increase
200 - 500-1000
20. What is high-pass filtering also called?
high
large amount
high-pass filtering
edge enhancement filtering or sharpening
21. What is the raw data to which a Fourier Transformation is applied to create the digital image?
pixel size
raster scan pattern
frequency
numerical value
22. What directs information to and from various parts of the computer?
matrix size
pixel size
frequency
central processing unit
23. What is an image that has been converted into numerical values for transmission or processing?
program
digital image
high
band-pass filtering
24. What does a 1 in binary code stand for?
1940s
on
analog computers
high
25. What is the equation for determining gray scale bit depth?
high-pass filtering
2^x
raster scan pattern
high
26. If the window level increases - density will _____.
software
program
two
increase
27. The human visual range is ___ or fewer shades of gray.
1945
CD or DVD
data
32
28. What is the frequency response of the incoming signal called?
ENIAC
bandwidth
low
programs and data
29. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.
signal-to-noise ratio
ROM
200 - 500-1000
large amount
30. Computer memory is often rated in terms of total ____ memory.
digital computers
1960s
200 - 500-1000
byte
31. What is the measure of the differences between the data values referred to as?
10 megabyte
IR
contrast
bus
32. What are devices that process information?
progressive scanning
computers
analog-to-digital converters
byte
33. Around what time did digital computerization come out for CT and US?
analog-to-digital converters
1940s
little
1970s-1990s
34. What is the 'heart' of every computer?
array processors
mathematical theory - solid-state electronics - and microchip technology
pixel size
central processing unit
35. What is the primary limitation with the resolution on digital images?
raster scan pattern
hardware
fine
IR
36. Which computers handle data composed of definite quantities of current?
decreased
ROM
expansion or compression
digital computers
37. What is an image that has been converted into numerical values for transmission or processing?
reduces
high-pass filtering
digital image
200 - 500-1000
38. Binary systems operate with a ___-symbol language.
on
two
high
TV camera
39. Because the range of stored densities is so much wider than the visual range - any digital image is only a small part of the total data obtained - each image is a _____ on the total range of data.
progressive scanning
transverse - sagittal - and coronal
1970s-1990s
window
40. What is the name for a binary digit?
raster scan pattern
Fourier Transformation
200 - 500-1000
bit
41. Which computers handle data composed of continuously varying electrical currents?
binary machine
analog computers
DICOM standard
1970s-1990s
42. What is the random background information that does not contribute to the image quality?
RAM
noise
peripherals
mathematical theory - solid-state electronics - and microchip technology
43. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.
fine
1-2 lp/mm
array detection
pixel
44. Which computers handle data composed of definite quantities of current?
1000+
digital computers
smoothing
computer - radiographer
45. What is the name for an 8-bit word?
Input devices
fine
RAM
byte
46. 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
gray scale bit depth
abacus
1000+
47. Which type of filter amplifies or deletes all but low frequencies - appears to reduce contrast - and is often used to remove high frequency nose.
1-2 lp/mm
electronic sources
transverse - sagittal - and coronal
low-pass filter
48. What are devices that process information?
program
high
computers
large amount
49. What directs information to and from various parts of the computer?
data
smoothing
central processing unit
number of values displayed per image side
50. Extremely narrow window width requires the computer to ignore a ___ ____ of data outside the chosen range.
byte
accentuates or suppresses
high-pass filtering
large amount