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48問 • 10ヶ月前
  • E
    • 通報

    問題一覧

  • 1

    earliest calculating tool, invented thousand of years ago

    Computer

  • 2

    two people who built a mechanical calculators using pegged wheels.

    BLAISE PASCAL and GOTTFRIED LEIBNIZ

  • 3

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

    Automatic Sequence Controlled Calculator

  • 4

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

    ENIAC (electronic numerical integrator and calculator)

  • 5

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

    WILLIAM SHOCKLEY

  • 6

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

    UNIVAC (Universal automatic computer )

  • 7

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

    COMPUTER

  • 8

    identifies a computer as able to solve any solvable problem

    General Purpose

  • 9

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

    Special Purpose

  • 10

    have largely replaced analog computer.

    Digital computers

  • 11

    - 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)

    - 1st Generation - 4th Generation

  • 12

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

    - 2nd Generation - 3rd Generation

  • 13

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

    Integrated circuits

  • 14

    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)

    5th Generation

  • 15

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

    AI

  • 16

    5 Computer types of 5th generation DLNUC

    • Desktop • Laptop • NoteBook • UltraBook • ChromeBook

  • 17

    smallest size of computer

    Microcomputer

  • 18

    sizes of computer larger in capacity and flexibility

    Minicomputer

  • 19

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

    Mainframe computer

  • 20

    5 Types of Computers SMWMM

    - Supercomputer - Microcomputer - Workstations - Mainframe Computer - Minicomputer

  • 21

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

    - Computer Tomography - Magnetic Resonance - Digital Subtraction Angiography

  • 22

    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

    Computed radiography (CR)

  • 23

    In Computed Radiography, the film cassette is called?

    Imaging Plate

  • 24

    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.

    STEPS

  • 25

    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.

    - Reader - Laser

  • 26

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

    Photostimulable Storage Phosphor

  • 27

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

    - 1 mm - europium

  • 28

    it is the emission of light when stimulated by radiation

    PHOTOSTIMULABLE LUMINESCENCE

  • 29

    This detects emitted light and converts it to electric signals.

    photomultiplier tube

  • 30

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

    Room-level fluorescent light

  • 31

    Advantages of CR

    (1) the same plate can be used again and again; • (2) it does not require a dark room and developing chemicals; • (3) the produced image is digital and can be stored and manipulated electronically; • (4) these images have greater dynamic range, wider exposure latitude and reduced patient exposure.

  • 32

    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?

    photostimulable phosphor.

  • 33

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

    - Portable - Upright

  • 34

    Imaging Plate Layers PPRBB

    - Protective layer - Photostimulable phosphor - Reflective layer - Base - Backing

  • 35

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

    Bromide & Iodide

  • 36

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

    • A. Image capture in the IP • B. Image readout

  • 37

    In CR, _____ is achieved using a rotating mirror.

    Scanning

  • 38

    The signal from the imaging plate is read in a _______

    CR Reader

  • 39

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

    - Blue - Red light

  • 40

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

    30 and 45s

  • 41

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

    - CR - DR

  • 42

    this component translates information (electrical signal) into digital data

    analog digital converter (ADC)

  • 43

    Scanning time of the cassettes minimal, usually taking between

    45 and 60 seconds

  • 44

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

    CCD DR

  • 45

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

    Moiré artifacts

  • 46

    First CT Scanner was created by?

    Siemens

  • 47

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

    PACS

  • 48

    Computed Radiography process was introduced in US in 1983 by?

    Fuji Medical Systems

    • history of computer 11-20/20

    history of computer 11-20/20

    ユーザ名非公開 · 27問 · 1年前

    history of computer 11-20/20

    history of computer 11-20/20

    27問 • 1年前
    ユーザ名非公開

    問題一覧

  • 1

    earliest calculating tool, invented thousand of years ago

    Computer

  • 2

    two people who built a mechanical calculators using pegged wheels.

    BLAISE PASCAL and GOTTFRIED LEIBNIZ

  • 3

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

    Automatic Sequence Controlled Calculator

  • 4

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

    ENIAC (electronic numerical integrator and calculator)

  • 5

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

    WILLIAM SHOCKLEY

  • 6

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

    UNIVAC (Universal automatic computer )

  • 7

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

    COMPUTER

  • 8

    identifies a computer as able to solve any solvable problem

    General Purpose

  • 9

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

    Special Purpose

  • 10

    have largely replaced analog computer.

    Digital computers

  • 11

    - 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)

    - 1st Generation - 4th Generation

  • 12

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

    - 2nd Generation - 3rd Generation

  • 13

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

    Integrated circuits

  • 14

    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)

    5th Generation

  • 15

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

    AI

  • 16

    5 Computer types of 5th generation DLNUC

    • Desktop • Laptop • NoteBook • UltraBook • ChromeBook

  • 17

    smallest size of computer

    Microcomputer

  • 18

    sizes of computer larger in capacity and flexibility

    Minicomputer

  • 19

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

    Mainframe computer

  • 20

    5 Types of Computers SMWMM

    - Supercomputer - Microcomputer - Workstations - Mainframe Computer - Minicomputer

  • 21

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

    - Computer Tomography - Magnetic Resonance - Digital Subtraction Angiography

  • 22

    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

    Computed radiography (CR)

  • 23

    In Computed Radiography, the film cassette is called?

    Imaging Plate

  • 24

    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.

    STEPS

  • 25

    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.

    - Reader - Laser

  • 26

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

    Photostimulable Storage Phosphor

  • 27

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

    - 1 mm - europium

  • 28

    it is the emission of light when stimulated by radiation

    PHOTOSTIMULABLE LUMINESCENCE

  • 29

    This detects emitted light and converts it to electric signals.

    photomultiplier tube

  • 30

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

    Room-level fluorescent light

  • 31

    Advantages of CR

    (1) the same plate can be used again and again; • (2) it does not require a dark room and developing chemicals; • (3) the produced image is digital and can be stored and manipulated electronically; • (4) these images have greater dynamic range, wider exposure latitude and reduced patient exposure.

  • 32

    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?

    photostimulable phosphor.

  • 33

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

    - Portable - Upright

  • 34

    Imaging Plate Layers PPRBB

    - Protective layer - Photostimulable phosphor - Reflective layer - Base - Backing

  • 35

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

    Bromide & Iodide

  • 36

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

    • A. Image capture in the IP • B. Image readout

  • 37

    In CR, _____ is achieved using a rotating mirror.

    Scanning

  • 38

    The signal from the imaging plate is read in a _______

    CR Reader

  • 39

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

    - Blue - Red light

  • 40

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

    30 and 45s

  • 41

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

    - CR - DR

  • 42

    this component translates information (electrical signal) into digital data

    analog digital converter (ADC)

  • 43

    Scanning time of the cassettes minimal, usually taking between

    45 and 60 seconds

  • 44

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

    CCD DR

  • 45

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

    Moiré artifacts

  • 46

    First CT Scanner was created by?

    Siemens

  • 47

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

    PACS

  • 48

    Computed Radiography process was introduced in US in 1983 by?

    Fuji Medical Systems