Terms
This is caused by absorption and scattering.
What is attenuation?
In computer language a byte is this.
What is 8 bits?
Digital radiography was introduced by this company in this year.
What is Fuji in 1981?
If an outer shell electron is ejected resulting in ionization of the atom it is called this.
What is Compton Scattering?
Computed radiography has wide exposure____.
What is latitude?
This is an example of computer software.
What is the computer porgram?
This type of radiology allows for the transfer of images to remote sites for interpretation.
What is teleradiology?
This happens at energies below 10 KeV.
What is coherent scattering?
First generation computers run with this.
What is vacuum tubes?
X-ray interaction with matter that results in the ejection of a K-shell electron is called this.
What is Photoelectric Effect/Absorption?
This is the principal source of noise in computed radiography.
What is scatter?
CR images have these 2 advantages.
What is wide exposure latitude and improved contrast resolution?
This determines the contrast (shades of gray) of an x-ray image.
What is differential absorption?
Computed radiology images can product this many gray levels.
What is 100,000?
This first large-scale use of computers in radiology was this modality in this year.
What is CT in the year 1970?
These are the 2 most important interactions for x-ray image production.
What is Compton scattering and Photoelectric Effect?
The computed radiography screen responds to radiation by doing this.
What is photostimulable luminescence (PSL)?
This is prevented by flooding the erased imaging plate with bright light.
What is ghosting?
This controls data transfer between the main memory and input and output hardware.
What is the CPU?
In computer language a single binary digit, 0 or 1 is called this.
What is a bit?
This is the oldest computer language for writing scientific and mathematical programs.
What is FORTRAN?
When the mass density of the absorber (patient) is ____ it results in ____ in Compton scattering.
What is increase/increase?
The CR reader is made up of the following modules or parts.
What is mechanical, optical, and computer?
K shell binding energy increase with this.
What is increased atomic number?
This is the activator of the photostimulable phosphor (PSP).
What is eruopium?
Because of differential absorption about ____% of the incident beam from the x-ray tube contributes to the finished image.
What is 0.5%?
The ____ program developed in 1951, was the first commercially successful general purpose stored program electronic digital computer.
What is UNIVAC?
These are the 5 x-ray interactions with matter.
What is coherent scattering, Compton scattering, photoelectric effect, pair production, and photodisintegration?
These are the four steps of creating an image with CR.
What is metastable state, stimulate, read, erase?
The use of contrast agents (barium/IV contrast) increases the amount of this.
What is differential absorption, Compton scattering, and photoelectric effect?