Most definitions found in this glossary are adapted with permission from this text book:

Maheu, M., Whitten, P., & Allen, A. (2001). eHealth, Telehealth & Telemedicine: A Guide to Startup and Success. New York: Jossey-Bass.

Browse the glossary using this index

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Cloud Computing

Cloud computing refers to the data being duplicated and stored on more than one distant computer system, the redundancy providing protection against a "crash" of any one of the cloud's computers.
Entry link: Cloud Computing

Coaxial cable

A single or dual transmission wire that accommodates high bandwidth. Cable is used to transmit broadband data, voice, and video.
Entry link: Coaxial cable


Coder-decoder. Hardware or software (or both) that converts an analog video signal to digital, then compresses it. At the receiving end, the signal is decompressed and converted back to analog output by a compatible codec.
Entry link: Codec


Describing the ability of hardware, software, and data to work together without data loss, changes, or other manipulations. Standards-based specifications of procedures, equipment interfaces, and data formats are essential for minimizing incompatibility.
Entry link: Compatible

Compressed video

Video images that have been compressed to reduce the amount of bandwidth needed to transmit information. They can then be sent over less expensive transmission media (land-based T-1 lines rather than via satellite, POTS lines rather than ISDN, and so on).
Entry link: Compressed video


See data compression.
Entry link: Compression

Computed radiography (CR)

A system of creating digital radiographic images that uses a storage phosphor plate in a cassette. A laser beam scans the plate after it is exposed, producing a digital image.
Entry link: Computed radiography (CR)


In the computer world, limiting the disclosure of privileged information by using authorization protocols to protect that information against theft or improper use. Confidentiality of patient records and communications is both a legal and an ethical requirement for health care professionals.
Entry link: Confidentiality


The free flowing of individuals from one technology to another for routine communication.
Entry link: Confluence

Consultant Site

(see also Hub Site or Distant Site) Is the site where the provider is located when delivering a telehealth service.

Entry link: Consultant Site

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