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. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.
fine
inverse
DICOM standard
edge enhancement filtering or sharpening
2. When subject contrast is high - the acquired data contrast will be ____.
high
2^x
signal-to-noise ratio
read memory
3. When subject contrast is high - the acquired data contrast will be ____.
pixel
high
frequency - contrast - and noise
bus
4. Each pixel is capable of representing a wide range of what?
bus
shades of gray
software
binary machine
5. Around what time did digital computerization come out for CT and US?
parallel - serial
greater
1970s-1990s
byte
6. What are the two most common output devices?
CT and MRI
digital imaging and communication in medicine
bit
monitors and printers
7. Modalities differ in bit depth that is available depending on the capabilities of what?
detector
electronic sources
analog computers
IR
8. What changes the pixel value by addition or subtraction and controls image density?
bus
magnetic tape
window level
mathematical theory - solid-state electronics - and microchip technology
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?
edge enhancement filtering or sharpening
Fourier Transformation
smoothing
bus
10. What is the 'heart' of every computer?
mathematical theory - solid-state electronics - and microchip technology
Input devices
inverse
central processing unit
11. What is the raw data to which a Fourier Transformation is applied to create the digital image?
expansion or compression
frequency
low
large amount
12. What determines resolution?
increase
pixel size
direct
filtering
13. What are the 3 classifications of digitized image filters?
low-pass - band-pass - and high-pass
CT and MRI
program
voxel
14. Computer programs are called what?
software
numerical value
low-pass - band-pass - and high-pass
binary machine
15. Computer memory is often rated in terms of total ____ memory.
smoothing
DICOM standard
byte
central processing unit
16. The ____ is the heart of the computer while the ___ is the vessels.
number of values displayed per image side
progressive scanning
greater
CPU - Bus
17. A high S/N indicates ___ noise in the image.
hardware
band-pass filtering
smoothing
little
18. Increased noise = _____ image contrast.
program
analog-to-digital converters
computer - radiographer
decreased
19. Computers operate from ____ ____ language.
binary machine
IR
digital image
2^x
20. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.
numerical values
direct
peripherals
signal-to-noise ratio
21. ____ circuits permit simultaneous transmission of information while ____ circuits transmit sequentially.
two
bus speed
parallel - serial
peripherals
22. What are the two ways detectors acquire information?
program
RAM - ROM
scanning or array detection
analog computers
23. Fluoroscopic noise mostly comes from what?
electronic sources
smoothing
shades of gray
number of values displayed per image side
24. 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?
mathematical theory - solid-state electronics - and microchip technology
window
health level 7
bus speed
25. There is a ___ relationship between subject contrast and acquired data contrast.
direct
CD or DVD
expansion or compression
software
26. Each box of an image matrix will display a ____ ____ which can be transformed into a visual brightness or density level.
parallel - serial
CD or DVD
computer - radiographer
numerical value
27. What type of scanning increases resolution slightly by scanning all 525 lines in order?
Fourier Transformation
ENIAC
progressive scanning
CD or DVD
28. Extremely wide window width requires the computer to ignore ___ contrast differences in order to display the entire range of data.
matrix size
read memory
fine
RAM
29. What directs information to and from various parts of the computer?
central processing unit
software
slow scanning
1970s-1990s
30. Digitalization of analog information (increases / reduces) the quality and quantity of information?
data
numerical values
signal-to-noise ratio
reduces
31. What is the name for a binary digit?
1945
analog computers
bit
TV camera
32. 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.
window
TV camera
little
CD or DVD
33. The human visual range is ___ or fewer shades of gray.
fine
direct
32
gray scale bit depth
34. 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.
0 - 1
voltage
Fourier Transformation
bus
35. There is a ___ relationship between subject contrast and acquired data contrast.
digital computers
pixel size
TV camera
direct
36. What does a 0 in binary code stand for?
byte
scanning or array detection
off
RAM
37. What is the equation for determining gray scale bit depth?
shades of gray
digital computers
2^x
low
38. If window width increases - image contrast will ____.
bandwidth
decrease
pixel
low
39. Scanners - mouse - keyboard - input memory disk drive - and paper printers are all forms of what?
Fourier Transformation
RAM - ROM
peripherals
RAM - ROM
40. 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?
bus speed
bus
increase
monitors and printers
41. Medical imaging is often achieved from information that has been processed by what?
analog-to-digital converters
IRs
monitors and printers
window level
42. The quality of the data acquired from the IR is measured by what three data characteristics?
frequency - contrast - and noise
DICOM standard
pixel size
array processors
43. Digitalization of analog information (increases / reduces) the quality and quantity of information?
matrix
number of values displayed per image side
reduces
computers
44. Which memory replaces new information with the old; can change?
low
analog computers
write memory
CPU - Bus
45. What 3 things were required prior to digital computer applications in medical imaging?
mathematical theory - solid-state electronics - and microchip technology
large amount
RAM
byte
46. Binary systems operate with a ___-symbol language.
raster scan pattern
1960s
two
mathematical theory - solid-state electronics - and microchip technology
47. It is important that the radiographer understand anatomy from different perspectives due to the methods of digital processing and image information? What are the 3 perspectives?
write memory
transverse - sagittal - and coronal
window
read memory
48. What can memory be transferred as?
window
scanning
voltage
raster scan pattern
49. Computer programs are called what?
increase
write memory
software
voltage
50. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?
band-pass filtering
low-pass - band-pass - and high-pass
voxel
RAM
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests