Intro to Digital
How many values are possible for a binary digit?
2
What converts an electric signal into binary code?
Analog-to-digital converter
Bit depth is....
The number of gray shades assigned to an individual pixel.
What are the steps for the digital imaging process?
Image acquisition, image processing, image display and image storage
Teleradiology is....
the transfer of images and patient data to remote locations for interpretation and filing.
Which form of data is more stable over time, digital or analog?
Digital
The binary system is...
a language that gives a computer instructions on how to store and manipulate data
Define sampling frequency.
The frequency that a data sample is acquired from the exposed image receptor.
As matrix size decreases...
Spatial resolution decreases, pixel size increases, del fill factor size decreases
What is RIS?
Radiology Information System
The first electronic computer was created in ______.
1939
The CPU, or Central Processing Unit, is...
the primary element that allows the computer to manipulate data and carry out software instructions
What is a matrix?
The number of pixels that make up an image and determines spatial resolution
What factors improve spatial resolution of a digital image?
Smaller pixels, larger matrix, larger dels
Define DICOM
The standard method of image storage for diagnostic medical images and enables imaging systems from different manufacturers to communicate with each other
FORTRAN is...
First successful programming language; used for solving engineering and scientific problems
What does RAM stand for and what is its primary function?
Random Access Memory; temporary data storage for immediate use by the CPU
The ability to distinguish between multiple densities in an x-ray image is...
Contrast Resolution
True or False: Higher sampling frequency in digital imaging results in improved saptail resolution?
True
What does RIS do?
Allows the radiographer to receive imaging orders from providers, track orders with delays, start/end procedures and make notes for the radiologists about a particular exam.
The first large scale radiology application of digital technology was with what modality?
Computed Tomography (CT)
Secondary memory
True or False: The main advantage of digital imaging is that it requires no conversion of analog to binary data.
False
True or False: Higher digitization depth results in better spatial resolution in digital imaging
False
When was PACS revised to MIMPS?
April 19, 2021