TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

DUAL-PHOTON ABSORPTIOMETRY [2 records]

Record 1 2019-09-25

English

Subject field(s)
  • Diagnostic Procedures (Medicine)
  • Nuclear Medicine
  • Bones and Joints
CONT

The basic principle involved in dual-photon absorptiometry (DPA) for the measurement of bone density was the same as for single-photon absorptiometry: quantifying the degree of attenuation of a photon energy beam after passage through bone and soft tissue. In dual-photon systems, however, an isotope, which emitted photon energy at two distinct photoelectric peaks, or two isotopes, each emitting photon energy at separate and distinct photoelectric peaks, were used.

French

Domaine(s)
  • Méthodes diagnostiques (Médecine)
  • Médecine nucléaire
  • Os et articulations
DEF

Technique [diagnostique] appréciant la densité osseuse rapportée à la surface [...]

OBS

Elle apprécie l'atténuation d'un rayonnement fourni par un tube à rayons X.

Spanish

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Record 2 2011-08-08

English

Subject field(s)
  • Analytical Chemistry

French

Domaine(s)
  • Chimie analytique
CONT

Spectroscopie d'absorption à deux photons. [...] Elle consiste [...] à éclairer le milieu à étudier avec deux faisceaux, de même fréquence, d'intensité sensiblement égale, se propageant dans des directions opposées, [...] [en mettant à profit] la possibilité pour un atome (ou une molécule) d'absorber simultanément deux photons.

OBS

Absorptiométrie. Technique d'analyse physico-chimique utilisant l'absorption de la lumière par les molécules ou les ions.

Spanish

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