Technetium-99m
Technetium-99m is a metastable nuclear isomer of technetium-99 (itself an isotope of technetium), symbolized as 99mTc, that is used in tens of millions of medical diagnostic procedures annually, making it the most commonly used medical radioisotope.
Technetium-99m is used as a radioactive tracer and can be detected in the body by medical equipment (gamma cameras). It is well suited to the role because it emits readily detectable 140 keV gamma rays (these 8.8 pm photons are about the same wavelength as emitted by conventional X-ray diagnostic equipment) and its half-life for gamma emission is 6.0058 hours (meaning 93.7% of it decays to 99Tc in 24 hours). The relatively "short" physical half-life of the isotope and its biological half-life of 1 day (in terms of human activity and metabolism) allows for scanning procedures which collect data rapidly but keep total patient radiation exposure low. The same characteristics make the isotope suitable only for diagnostic but never therapeutic use.
MTC
MTC may stand for:
See also
Mandarin Training Center
Coordinates: 25°1′38.46″N 121°31′42.68″E / 25.0273500°N 121.5285222°E
Mandarin Training Center (Chinese: 國語教學中心) is one of the world's oldest and most distinguished programs for Chinese as a second language study. It is run by National Taiwan Normal University (NTNU) in Taipei, Taiwan and located at NTNU Da'an Campus.
History
The Mandarin Training Center (MTC) was founded in 1956. It was briefly known as the Center for Chinese Language and Culture Studies from 2002-2004. The center attracts students from all parts of the world to Taiwan to study Mandarin Chinese language and literature. Students also have access to courses in Chinese calligraphy, Chinese martial arts, and traditional music and theater. Courses are offered in three-month quarterly terms throughout the year. This system enables international students to engage in intensive language study during their summer breaks and within single semesters. The MTC sponsors travel, hosts speech contests, and stages workshops and performances.
Shining
Shining or The Shining may refer to:
Activities
Art, entertainment, and media
In film
In games
In literature
In music
Artists
Albums
Shining (Marcia Hines album)
Shining is the second studio album by American-Australian singer Marcia Hines. Hines had been resident in Australia since 1970. Shining peaked at #3, and remains Hines’ highest charting studio album. It sold more than 150,000 copies.
Track listing
Chart positions
Weekly charts
Year-end charts
Credits
References
External links
Shining (EP)
Shining is the first EP by pop singer Crystal Kay. It was released on November 28, 2007. The EP features five tracks, all of which have a Christmas or holiday theme. A music video was made for the main promotional track, also called "Shining". The song was used in commercials for "Parco X'Mas TV" throughout the Christmas period, in which Kay starred. "Happy 045 Xmas"had been released digitally in 2005, and "No More Blue Christmas'" (a Natalie Cole cover) had been released on Kay's first English studio album Natural: World Premiere Album in December 2003.
First press editions of the EP had a sleeve cover and a greeting card.
