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X-Rays MeSH Descriptor Data 2023


MeSH Heading
X-Rays
Tree Number(s)
G01.358.500.505.970
G01.750.250.970
G01.750.750.918
Unique ID
D014965
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D014965
Annotation
diagnostic use of X-rays = RADIOGRAPHY + specific disease /‌diag image; therapeutic use of X-rays = X-RAY THERAPY (general) or /‌radiother with specific diseases; X-ray or x-ray in translations: follow text
Scope Note
Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source.
Entry Term(s)
Grenz Ray
Grenz Rays
Radiation, X
Roentgen Ray
Roentgen Rays
X Ray
X-Radiation
X-Ray
Xray
Xrays
Public MeSH Note
91; was see under RADIATION, IONIZING 1976-90; was see under RADIATION 1965-75
Online Note
search RADIATION 1966-74
History Note
91(75); was see under RADIATION, IONIZING 1976-90; was see under RADIATION 1965-75
Entry Combination
therapeutic use:X-Ray Therapy
Date Established
1991/01/01
Date of Entry
1999/01/01
Revision Date
2020/05/27
Entry Combination
therapeutic use:X-Ray Therapy

Allowable Qualifiers
X-Rays Preferred
Grenz Rays Narrower
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