earliest calculating tool, invented thousand of years ago

two people who built a mechanical calculators using pegged wheels.

the first general purpose modern computer was developed in 1944 at Harvard University. Now called as the Mark I

the first general purpose electronic computer was developed in 1946 at the University of Pennsylvania.

In 1948, developed a transistor, which led to the creation of a smaller computer.

appeared in 1951 as the first commercially successful general purpose stored-program electronic digital computer.

this word today is used as an abbreviation for any general purpose stored program electronic digital computer.

identifies a computer as able to solve any solvable problem

designed for a particular singular task, such as control of an assembly line robot or an automobile ignition.

have largely replaced analog computer.

- generation of computer that were vacuum-tube machines (1946-1959) - generation of computer that appeared in 1970, extension of the third and incorporated large-scale integration (LSI). This is now replaced by very large-scale integration (VLSI). (1971-1980)

- generation of computer that is based on individually package transistor - generation of computer that used integrated circuits (IC) (1965-1971)

consists of many transistors and other electronic elements fused on to a chip, a tiny piece of semiconductor material.

In the this generation, VLSI technology became ULSI (Ultra Large Scale Integration) technology, resulting in the production of microprocessor chips having ten million electronic components. (1980-Present)

emerging branch in computer science, which interprets the means and method of making computers think like human beings.

5 Computer types of 5th generation DLNUC

smallest size of computer

sizes of computer larger in capacity and flexibility

size of computer used for very large applications such as the U.S census Bureau.

5 Types of Computers SMWMM

introduction of computers has expanded the domain of diagnostic imaging, making modalities possible such as CMD

offers the chance of obtaining information from X-ray examinations in digital form so that the advantages of the digital techniques can be applied to conventional x-ray

In Computed Radiography, the film cassette is called?

1. After exposure, the digital image reading system scans the IP point by point with a laser beam. • 2. The resulting luminescent light value is transformed by a photo multiplier into an electric signal which is stored as a numerical value • 3. The stored information can be computed as a picture and then shown either on a monitor. • 4. After the scanning the remaining unused information on the IP is deleted by halogen light. • 5. The IP is then available again for further examinations.

The cassettes is then placed into a _______ with a ____ shone on to it which releases the stored photons, collects the signal, and digitizes it to be displayed on a display screen.

Within CR cassette is a what type of screen detector that stores latent image upon x-ray exposure

Photostimulable phosphor plate used in CR are flexible plates that are _ mm thick and are coated with ______ activated fluorohalide compounds

it is the emission of light when stimulated by radiation

This detects emitted light and converts it to electric signals.

The stored information on the plates can be erased by exposing it to

Advantages of CR

CR uses a storage phosphor that requires light input to release the trapped energy in the form of light that is proportional to the X-ray intensity. It is referred to as?

CR IRs can be ______ or fixed in a table or _____ x ray unit.

Imaging Plate Layers PPRBB

The barium fluorohalide doped with europium is a combination of what? Typically 85% And 15%

• CR imaging requires a two step process for image acquisition:

In CR, _____ is achieved using a rotating mirror.

The signal from the imaging plate is read in a _______

Most phosphors used for CR emit light at the _____ end of the spectrum and need a scanning laser emitting ______ for simulation.

• The time for a CR reader to extract the image from the plate is generally between about

__ now describes digital radiography that uses a cassette system whereas __ is a direct capture image acquisition technology that uses digital plates,

this component translates information (electrical signal) into digital data

Scanning time of the cassettes minimal, usually taking between

thid systems are heavy and are not easily configured for upright and recumbent imaging.

In CR system, replacing the standard 103 line per inch grid with a 170 line high frequency grid reduces?

First CT Scanner was created by?

this concept began with Albert Jutras in Canada (1950s)

Computed Radiography process was introduced in US in 1983 by?