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. Digital detectors are capable of producing ______ shades of gray.
byte
matrix size
1000+
computers
2. Changes in window width are sometimes called gray scale ____ or ____.
memory
1945
numerical value
expansion or compression
3. What is required for collection of input information?
two
detector
number of values displayed per image side
CD or DVD
4. Noise is measured as what?
voltage
signal-to-noise ratio
peripherals
frequency - contrast - and noise
5. 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.
analog-to-digital converters
digital imaging and communication in medicine
0 - 1
200 - 500-1000
6. When subject contrast is high - the acquired data contrast will be ____.
pixel
high
IRs
greater
7. What is the name for a binary digit?
decrease
accentuates or suppresses
bit
frequency
8. Binary systems operate with a ___-symbol language.
monitors and printers
program
two
memory
9. What is the 'heart' of every computer?
1945
IR
Fourier Transformation
central processing unit
10. Which type of filter amplifies or deletes all but the high frequencies - appears to increase contrast - and is useful in vascular imaging or digital mammo.
increase
high-pass filtering
decreased
peripherals
11. Which memory can only be extracted without alteration; cannot change?
scanning
read memory
smoothing
1-2 lp/mm
12. What does a 0 in binary code stand for?
off
shades of gray
1000+
CD or DVD
13. Computer memory is often rated in terms of total ____ memory.
frequency - contrast - and noise
byte
scanning or array detection
memory
14. In medical imaging - each pixel value corresponds to a 3-D volume of tissue known as what?
2^x
voxel
pixel
high-pass filtering
15. The quality of the data acquired from the IR is measured by what three data characteristics?
array detection
array processors
TV camera
frequency - contrast - and noise
16. What does a 0 in binary code stand for?
off
low-pass - band-pass - and high-pass
low-pass - band-pass - and high-pass
smaller
17. What input device do radiographers use on a normal basis?
RAM - ROM
IRs
TV camera
monitors and printers
18. What 3 things were required prior to digital computer applications in medical imaging?
Input devices
mathematical theory - solid-state electronics - and microchip technology
on
reduces
19. In what time period did microchip technology come out?
inverse
1960s
inversely
shades of gray
20. What is accomplished by transforming the image into frequencies and making mathematical alteration to reproduce the image?
1000+
filtering
IR
bus speed
21. What is the process used in low-pass filtering that is accomplished by averaging adjacent pixels values?
DICOM standard
low
central processing unit
smoothing
22. A high contrast image has a ___ frequency.
high
noise
scanning or array detection
central processing unit
23. When detectors acquire their information through ____ they are receiving all the info at once.
array detection
magnetic tape
byte
low-pass filter
24. Modalities differ in bit depth that is available depending on the capabilities of what?
numerical values
bus speed
number of values displayed per image side
IR
25. What modalities are array processors useful for?
data
CT and MRI
frequency - contrast - and noise
analog computers
26. What is the primary limitation with the resolution on digital images?
raster scan pattern
decreased
signal-to-noise ratio
central processing unit
27. 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?
CD or DVD
transverse - sagittal - and coronal
IR
0 - 1
28. The ____ is the heart of the computer while the ___ is the vessels.
low
Fourier Transformation
large amount
CPU - Bus
29. What provides specific instructions for calculations and sequential steps to be followed?
TV camera
software
1945
accentuates or suppresses
30. Density and contrast of the digital image are controlled by varying the ____ ____ of each pixel.
decreased
signal-to-noise ratio
array detection
numerical values
31. What is an image that has been converted into numerical values for transmission or processing?
digital image
band-pass filtering
expansion or compression
high
32. A low contrast image has a ___ frequency.
low
scanning
analog computers
direct
33. Which type of filter amplifies or deletes all but a selected range or band of frequencies and is useful in the elimination of characteristic emission peaks?
central processing unit
matrix size
32
band-pass filtering
34. Commercial systems often have a S/N of ____ but the HR systems used in digital fluoro have a S/N between ________.
200 - 500-1000
array detection
1960s
high
35. What is the name for a binary digit?
smoothing
byte
health level 7
bit
36. What is the 'heart' of every computer?
central processing unit
edge enhancement filtering or sharpening
bus
slow scanning
37. All medical imaging is achieved with which type of computers?
accentuates or suppresses
digital computers
ROM
greater
38. What is the raw data to which a Fourier Transformation is applied to create the digital image?
low-pass - band-pass - and high-pass
array detection
frequency
slow scanning
39. Fluoroscopic noise mostly comes from what?
electronic sources
read memory
digital computers
1945
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?
scanning or array detection
bus
transverse - sagittal - and coronal
1970s-1990s
41. Window width and contrast have an ____ relationship.
bus speed
analog-to-digital converters
inverse
CD or DVD
42. Who or What is responsible for density changes on a digital image? On a manual image
peripherals
computer - radiographer
Input devices
scanning
43. What is the information stored as magnetic variations referred to as?
bus
memory
digital computers
Input devices
44. What are the two types of information computers use?
greater
progressive scanning
high
programs and data
45. What is critical to how fast the computer system can function?
shades of gray
bit
array detection
bus speed
46. When detectors acquire their information by ____ they are receiving info from a specific area.
scanning
RAM - ROM
direct
monitors and printers
47. Noise is ____ related to contrast.
central processing unit
inversely
digital computers
analog-to-digital converters
48. What determines resolution?
binary machine
software
decreased
pixel size
49. What is high-pass filtering also called?
fine
frequency
shades of gray
edge enhancement filtering or sharpening
50. Which memory replaces new information with the old; can change?
write memory
software
noise
pixel
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