Digital Carter Chapter 1

Front 1

Define Digital Imaging.

Back 1

Any imaging acquisition process that produces and an electronic image that can be viewed and manipulated on a computer.

Front 2

What is the latent image formation for conventional imaging?

Back 2

Xrays strike and intensifying screen, light is emitted, and film exposed to light

Front 3

Compare the latent image formation for conventional imaging with cassette-based digital radiography.

Back 3

CONVENTIONAL - x-rays strike intensifying screen; light is emitted, and film is exposed to light CASSETTE - X-rays strike phosphor plate. X-ray energy deposited in the phosphor; energy is released from phosphor when stimulated by light in reader

Front 4

How is the latent image formed when using cassette-less digital radiography?

Back 4

X-rays strike the detector. INDIRECT phosphor emits light; photodetector (silicon and TFT) detects light and converts to electrical pulse. DIRECT X-rays detected by photoconductor and converted to electrical signals.

Front 5

What does the acronym PACS stand for, and what are its uses?

Back 5

Picture Archival and Communication System; consists of digital acquisition, display workstations and storage devices interconnected through a network

Front 6

What does the acronym DICOM stand for, and how is it used?

Back 6

digital imaging and communications in medicine; it is a global information technology standard that allows network communication between modality and PACS

Front 7

Computed Radiography (CR)

Back 7

cassette-based digital radiography is the digital acquisition modality that uses storage phosphor plates to produce projection images

Front 8

DICOM

Back 8

digital imaging and communications in medicine; it is a global information technology standard that allows network communication between modality and PACS

Front 9

Digital Imaging

Back 9

Any imaging acquisition prcoess that produces an electronic image that can be viewed and manipulated on a computer

Front 10

Digital Radiography (DR)

Back 10

or cassett-less systems use an x-ray absorber material coupled to a flat panel detector or a charged-coupled device to form the image.

Front 11

Direct capture digital radiography

Back 11

these devices convert the incident x-ray energy direc tly into an electrical signal, typically using a photoconductor as the x-ray absorber, and a thin-film transistor as the signal collection area, and send the electrical signal to the computer for processing and viewing

Front 12

Indirect capture digital radiography

Back 12

devices that absorb x-rays and convert them into light; the light is then detected by an area-charge-coupled device or thin film-transistor array in concert with photodiodes and then converted into an electrical signal that is sent to the computer for processing and viewing.

Front 13

Teleradiology

Back 13

moving images via telephone lines to and from remote locations