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a superseded international unit of x- or γ-radiation; it is the quantity of x- or γ-radiation such that the associated corpuscular emission per 0.001293 g of air produces,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.
Among the research, education and mentoring programs developed by Hillman are the Introduction to Research Program sponsored by RSNA, the American Roentgen Ray Society and Association of University Radiologists (AUR).
Blake of the university said at the annual meeting of the Roentgen Ray Society.
director of breast imaging at the University of Washington and the Seattle Cancer Care Alliance, an associate professor of Radiology at the University of Washington's School of Medicine and an affiliate investigator of the Fred Hutchinson Cancer Research Center, suggests computer-aided-detection evaluation of breast MRI with CADstream could be of value in assessing patients prior to biopsy, especially in women at high risk for breast cancer (American Journal of Roentgen Ray, July 2006).
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.
Damadian, president and chairman of FONAR, said, "Las Vegas is a moment of history for FONAR, It was there in Las Vegas in 1980 that FONAR unveiled the world's first commercial MRI, the QED 80, at the 1980 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.
He also serves on the Board of Trustees of the Massachusetts General Physicians Organization, the Board of Chancellors of the American College of Radiology, the Board of Trustees of the Research and Education Foundation of the Radiological Society of North America, and is the President of the American Roentgen Ray Society.