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Positron emission tomography
Positron emission tomography
(PET) is a nuclear medicine
medical imaging technique
which produces a three
dimensional image or map of
functional processes in the
body. PET is both a medical
... > full story
Ultrasound
Ultrasound is sound with a
frequency greater than the
upper limit of human
hearing, approximately 20
kilohertz (20,000 hertz).
Some animals, such as dogs,
dolphins, bats, and mice
have an upper limit that is
... > full story
Radiography
Radiography is the creation
of images by exposing a
photographic film or other
image receptor to X-rays.
Since X-rays penetrate solid
objects, but are weakened by
them depending on the
object's composition, the
... > full story
Computed tomography
Computed tomography (CT),
originally known as computed
axial tomography (CAT) and
body section
roentgenography, is a
medical imaging method
employing tomography where
digital geometry processing
... > full story
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Magnetic resonance imaging
Magnetic Resonance Imaging (MRI), formerly referred to as Magnetic Resonance Tomography (MRT) or Nuclear Magnetic Resonance (NMR), is a method used to visualize the inside of living organisms as well ... > more -
Doppler effect
The Doppler effect, named after Christian Andreas Doppler, is the apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves. The ... > more -
Confocal laser scanning microscopy
Confocal laser scanning microscopy (CLSM or LSCM) is a valuable tool for obtaining high resolution images and 3-D reconstructions. The key feature of confocal microscopy is its ability to produce ... > more -
Spectroscopy
Spectroscopy is the study of spectra, that is, the dependence of physical quantities on frequency. Spectroscopy is often used in physical and analytical chemistry for the identification of ... > more -
Videoconferencing
A videoconference (also known as a videoteleconference) is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions ... > more -
Particle accelerator
A particle accelerator is a device that uses electric fields to propel electrically charged particles to high speeds and magnetic fields to contain them. An ordinary CRT televison set is a simple ... > more -
Nanomedicine
Nanomedicine is the medical application of nanotechnology and related research. It covers areas such as nanoparticle drug delivery and possible future applications of molecular nanotechnology (MNT) ... > more -
Electromagnetic spectrum
The electromagnetic spectrum is the range of all possible electromagnetic radiation. Above infrared in frequency comes visible light. This is the range in which the sun and stars similar to it emit ... > more
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