roentgen ray


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x-ray

(eks'rā),
1. The ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from the excitation of the inner orbital electrons by the bombardment of the target anode with a stream of electrons from a heated cathode. Synonym(s): roentgen ray Compare: glass rays, indirect rays.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. Synonym(s): radiograph

roentgen ray

n.
See x-ray.

roentgen ray

See x-ray, def. 1.

x-ray

()
1. The ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from the excitation of the inner orbital electrons by the bombardment of the target anode with a stream of electrons from a heated cathode.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. A radiograph.
Synonym(s): roentgen ray.

Roentgen,

Wilhelm K., German physicist and Nobel laureate, 1845-1923.
roentgen - the international unit of exposure dose for x-rays or gamma rays.
roentgen ray - Synonym(s): x-ray
roentgenograph - Synonym(s): radiograph

x-ray

()
1. Ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from excitation of inner orbital electrons by bombardment of the target anode with a stream of electrons from a heated cathode.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. Synonym(s): radiograph.

roentgen

a superseded international unit of x- or γ-radiation; it is the quantity of x- or γ-radiation such that the associated corpuscular emission per 0.001293 g of air produces, in air, ions carrying 1 electrostatic unit of electrical charge of either sign. Abbreviated R. Now replaced by coulomb/kg (C/kg); see coulomb. 1 R = 2.58 × 10−4 C/kg; 1 C/kg = 3876 R.

roentgen equivalent man (rem)
see rem.
roentgen equivalent physical (rep)
see rep.
roentgen ray
x-ray.

Patient discussion about roentgen ray

Q. Is an X- Ray dangerous to my fetus? I fell down while I am pregnant and was sent to the ER. I was given an x- ray there, is the radiation dangerous to my fetus?

A. As far as I know one x-ray cannot harm your fetus since there is not enough radiation there to harm it. If you are worried consult a Doctor.

More discussions about roentgen ray
References in periodicals archive ?
Professor Oliver Lodge used Roentgen rays to image the wrist and the bullet was clearly identified at the base of the 3rd metacarpal.
Compared with conventional technology, digital chest radiographs can reduce the amount of radiation patients receive by 66% or more with no reduction in image quality, according to a study presented at the American Roentgen Ray Society meeting in Atlanta on May 1.
Blake of the university said at the annual meeting of the Roentgen Ray Society.
Allan Maimed said in a poster session at the annual meeting of the Roentgen Ray Society.
Allan Malmed said in a poster session at the annual meeting of the Roentgen Ray Society.
Statler, MC, USA, noted in his presentation at the annual meeting of the American Roentgen Ray Society.
Wanebo said at the annual meeting of the Roentgen Ray Society.
Muttarak said at the annual meeting of the American Roentgen Ray Society.