“tomography”的概念、定义、翻译、参考文献-科学参考

tomography

Physics

The use of X-rays to photograph a selected plane of a human body with other planes eliminated. The CT (computerized tomography) scanner is a ring-shaped X-ray machine that rotates through 180° around the horizontal patient, making numerous X-ray measurements every few degrees. The vast amount of information acquired is built into a three-dimensional image of the tissues under examination by the scanner’s own computer. The patient is exposed to a dose of X-rays only some 20% of that used in a normal diagnostic X-ray.

Chemical Engineering

A non-destructive imaging technique used to examine the internals of process pipes and equipment. It uses penetrating waves such as X-rays and produces a sectional image known as a tomogram. Invented by electrical engineer Sir Godfrey Newbold Hounsfield (1919–2004), it uses a computed tomographic or CT scanner. The scanner rotates around the object under investigation and takes a series of X-ray measurements. The accumulated data is then used to construct a three-dimensional image. Tomography has made a substantial contribution to medicine as well as many other areas of science and engineering.

Biology

The use of X-rays to photograph a selected plane of a human body with other planes eliminated. The CT (computerized tomography) scanner is a ring-shaped X-ray machine that rotates through 180° around the horizontal patient, making numerous X-ray measurements every few degrees. The vast amount of information acquired is built into a three-dimensional image of the tissues under examination by the scanner’s own computer. The patient is exposed to a dose of X-rays only a fraction of that used in a normal diagnostic X-ray. See also positron emission tomography.

Geology and Earth Sciences

Any technique by which details of a subsurface plane can be represented graphically. See seismic tomography.

单词	tomography
释义	tomography Physics The use of X-rays to photograph a selected plane of a human body with other planes eliminated. The CT (computerized tomography) scanner is a ring-shaped X-ray machine that rotates through 180° around the horizontal patient, making numerous X-ray measurements every few degrees. The vast amount of information acquired is built into a three-dimensional image of the tissues under examination by the scanner’s own computer. The patient is exposed to a dose of X-rays only some 20% of that used in a normal diagnostic X-ray. Chemical Engineering A non-destructive imaging technique used to examine the internals of process pipes and equipment. It uses penetrating waves such as X-rays and produces a sectional image known as a tomogram. Invented by electrical engineer Sir Godfrey Newbold Hounsfield (1919–2004), it uses a computed tomographic or CT scanner. The scanner rotates around the object under investigation and takes a series of X-ray measurements. The accumulated data is then used to construct a three-dimensional image. Tomography has made a substantial contribution to medicine as well as many other areas of science and engineering. Biology The use of X-rays to photograph a selected plane of a human body with other planes eliminated. The CT (computerized tomography) scanner is a ring-shaped X-ray machine that rotates through 180° around the horizontal patient, making numerous X-ray measurements every few degrees. The vast amount of information acquired is built into a three-dimensional image of the tissues under examination by the scanner’s own computer. The patient is exposed to a dose of X-rays only a fraction of that used in a normal diagnostic X-ray. See also positron emission tomography. Geology and Earth Sciences Any technique by which details of a subsurface plane can be represented graphically. See seismic tomography.
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