Health Informatics Glossary
The common name for a digital signal circuit with 1.44 Megabits/second
in full duplex bandwidth. A T1 is made up of twenty-four 8-bit
The common name for a digital signal circuit with 44.736
Megabits/second in full duplex bandwidth. A T3 is made up
of up to twenty-eight T1 signals.
The Telemedicine and Advanced Technology
Research Center performs medical reconnaissance and special operations
to address critical gaps that are underrepresented in DoD medical research
programs. TATRC fosters research on health informatics, telemedicine/m-Health,
medical training systems, and computational biology.
The practice and science of classification. Also used as a noun to describe a
taxonomic scheme (e.g., "A Functional
Taxonomy of Rule-based Decision Support Content" by Wright, Goldberg, et al.).
Transmission Control Protocol, defined in 1981 by
Transmission Control Protocol/Internet Protocol. See
Old slang for TELecommunication COmpany.
Short for telecommunications.
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The delivery of health care services and information via telecommunication
technologies. Telehealth can be as simple as a professional consult by
telephone, or as complex as remote control of surgery robots. Telehealth
solutions enable the delivery of clinical care at a distance into locations
where patient access to care is compromised by transportation challenges
(e.g., islands, rural communities, etc.).
EHRs frequently include blank electronic templates (i.e., forms) optimized to
enable prompt documentation of clinical observations during a patient
examination. However, CMS discourages templates with limited options, such
as predefined answers, checklists, or limited space for documentation.
The study of terms and their use, where "terms" are words or word compounds.
Transport Layer Security, the successor crytographic protocol to SSL,
providing endpoint authentication and communications confidentiality
with standard security certificates at 1024 or 2048 bit strengths,
per RFC 5246.
An electronic visual display that can detect the presence of a touch within
the display area.
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Trial Implementation -
The second stage in the development of the Nationwide Health Information
Network (NwHIN) was the
Implementation project. The set of information exchanges and Federal
agencies in this project worked together as the "NHIN Cooperative" to securely
exchange data including summary patient records for providers and patients.
The project ran from 2007 to 2009.
Triple Aim -
A framework developed by the Institute for Healthcare Improvement (IHI) that
describes a proven and practical approach to optimizing health system performance.
Trojan Horse -
A computer program that appears harmless but is actually malicious. Due to the
popularity of botnets among hackers and the availability of advertising services
that permit authors to violate user privacy, trojan horses are a common
In a relational database model a tuple is a finite function that maps
attributes to values.
 "txt" is the universal file name extension for
flat files structured as a series of lines of text. Taken strictly, "text
file" refers to a flat file container, while "plain text" is a type of
content.  TXT is a self-referential name for abbreviations
and slang commonly used in IM or mobile phone text messaging, which employs
creative alphanumeric combinations to shorten words (e.g., compressing "see
you later" into l8r or "ok" into k). Txt messaging usage
initially exploded under the voice-centric mobile phone market and has now
migrated into mobile data txt services accessed via wi-fi from smart phones
or tablets, including chat tools in social media apps (e.g., Facebook,
Twitter, etc.). See
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Type I Error -
Also known as an "error of the first kind," a Type I error is a false
positive. Lowering the probability of a Type I error (a false positive)
generally also raises the probability of a Type II error (a false
Type II Error -
Also known as an "error of the second kind," a Type II error is a false
negative. Lowering the probability of a Type II error (a false negative)
generally also raises the probability of a Type I error (a false