Chapter 2 Digital Imaging
Characteristics Exam Questions and
Answers 100% Pass
How many types of images are there in medical imaging? - ✔✔2
What are the 2 types of images in medical imaging? - ✔✔Analog, digital
A device or system that captures or measures a continuously changing signal -
✔✔Analog
Recorded as multiple numeric values and are divided into an array of small elements
(pixels) that can be processes in many different ways - ✔✔Digital
A digital image begins as what? - ✔✔An analog signal
Characteristics of a digital image: - ✔✔Spatial resolution, contrast resolution, noise,
receptor efficiency
Picture element, the smallest element in a digital image - ✔✔Pixel
A digital image is made up of pixels, which each have a: - ✔✔Numerical value
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, Numerical value of pixels associated with the ability to the digital image system to
display: - ✔✔Shades of gray
Shades of gray, AKA: - ✔✔Contrast resolution
Pixel size is directly related to what? - ✔✔Spatial resolution
As pixel size decreases, spatial resolution ________________ - ✔✔Increases
Systems ability of imaging system to demonstrate small details (sharpness) - ✔✔Spatial
resolution
The number of bits of information within each pixel - ✔✔Bit depth
Increase in bit depth = __________ shades of gray = _______________ contrast resolution
- ✔✔More, higher
A square arrangement of numbers in columns and rows. The numbers correspond to
each pixel - ✔✔Matrix
Matrix size is determined by who? - ✔✔Vendor
Typical range of pixels in a matrix: - ✔✔512 x 512 to 1024 x 1024
Range of pixels in a matrix can get as high as: - ✔✔2500 x 2500
Size of the matrix determines the side of: - ✔✔The pixels
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Characteristics Exam Questions and
Answers 100% Pass
How many types of images are there in medical imaging? - ✔✔2
What are the 2 types of images in medical imaging? - ✔✔Analog, digital
A device or system that captures or measures a continuously changing signal -
✔✔Analog
Recorded as multiple numeric values and are divided into an array of small elements
(pixels) that can be processes in many different ways - ✔✔Digital
A digital image begins as what? - ✔✔An analog signal
Characteristics of a digital image: - ✔✔Spatial resolution, contrast resolution, noise,
receptor efficiency
Picture element, the smallest element in a digital image - ✔✔Pixel
A digital image is made up of pixels, which each have a: - ✔✔Numerical value
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, Numerical value of pixels associated with the ability to the digital image system to
display: - ✔✔Shades of gray
Shades of gray, AKA: - ✔✔Contrast resolution
Pixel size is directly related to what? - ✔✔Spatial resolution
As pixel size decreases, spatial resolution ________________ - ✔✔Increases
Systems ability of imaging system to demonstrate small details (sharpness) - ✔✔Spatial
resolution
The number of bits of information within each pixel - ✔✔Bit depth
Increase in bit depth = __________ shades of gray = _______________ contrast resolution
- ✔✔More, higher
A square arrangement of numbers in columns and rows. The numbers correspond to
each pixel - ✔✔Matrix
Matrix size is determined by who? - ✔✔Vendor
Typical range of pixels in a matrix: - ✔✔512 x 512 to 1024 x 1024
Range of pixels in a matrix can get as high as: - ✔✔2500 x 2500
Size of the matrix determines the side of: - ✔✔The pixels
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