MeSH Browser

MeSH Heading: Absorptiometry, Photon
Tree Number(s): E01.370.350.700.024; E05.196.712.224.187
Unique ID: D015502
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D015502
Scope Note: A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION.
Entry Term(s): Absorptiometry, Dual X-Ray; Absorptiometry, Dual-Energy Radiographic; Absorptiometry, Dual-Energy X-Ray; Absorptiometry, X-Ray; DEXA Scan; DPX Absorptiometry; DXA Scan; Densitometry, X-Ray; Densitometry, Xray; Dual X-Ray Absorptiometry; Dual-Energy Radiographic Absorptiometry; Dual-Energy X-Ray Absorptiometry; Dual-Energy X-Ray Absorptiometry Scan; Dual-Photon Absorptiometry; Photodensitometry, X-Ray; Photon Absorptiometry; Radiographic Absorptiometry, Dual-Energy; Single-Photon Absorptiometry; X-Ray Absorptiometry; X-Ray Absorptiometry, Dual-Energy; X-Ray Photodensitometry
Previous Indexing: Absorption (1972-1979); Densitometry (1966-1989); Radionuclide Imaging (1977-1989); Spectrophotometry, Atomic Absorption (1974-1982); Tomography, Emission Computed (1980-1989)
Public MeSH Note: 90; was see RADIONUCLIDE IMAGING 1985-89
Online Note: use RADIONUCLIDE IMAGING to search ABSORPTIOMETRY, PHOTON 1985-89
History Note: 90; was see RADIONUCLIDE IMAGING 1985-1989; for DUAL-ENERGY RADIOGRAPHIC ABSORPTIOMETRY use DENSITOMETRY, X-RAY
Date Established: 1990/01/01
Date of Entry: 1989/10/04
Revision Date: 2013/07/09

Allowable Qualifiers: adverse effects (AE)

classification (CL)

economics (EC)

ethics (ES)

history (HI)

instrumentation (IS)

methods (MT)

standards (ST)

statistics & numerical data (SN)

trends (TD)

veterinary (VE)

Diagnosis [E01]
- Diagnostic Techniques and Procedures [E01.370]
  - Diagnostic Imaging [E01.370.350]
    - Radiography [E01.370.350.700]

Investigative Techniques [E05]
- Chemistry Techniques, Analytical [E05.196]
  - Photometry [E05.196.712]
    - Densitometry [E05.196.712.224]
      - Absorptiometry, Photon [E05.196.712.224.187]

Absorptiometry, Photon Preferred

Radiographic Absorptiometry, Dual-Energy Narrower

Dual-Energy X-Ray Absorptiometry Narrower

Dual-Photon Absorptiometry Related

Single-Photon Absorptiometry Related

Dual-Energy X-Ray Absorptiometry Scan Narrower

Densitometry, X-Ray Narrower

Concept UI: M0005838
Scope Note: Measurement of the degree of darkening of X-ray film by means of a photocell which measures light transmission through the film.
Terms: Densitometry, X-Ray Preferred Term
Term UI T010894
Date01/01/1999
LexicalTag NON
ThesaurusID NLM (1967); Densitometry, Xray
Term UI T010896
Date12/07/1977
LexicalTag NON
ThesaurusID UNK (19XX); Photodensitometry, X-Ray
Term UI T691377
Date02/09/2007
LexicalTag NON
ThesaurusID NLM (2008); X-Ray Photodensitometry
Term UI T691378
Date02/09/2007
LexicalTag NON
ThesaurusID NLM (2008)

Absorptiometry, X-Ray Narrower

Absorptiometry, Photon MeSH Descriptor Data 2025