Kerma definition

Kerma means the sum of the initial energies of all the charged particles liberated by uncharged ionizing particles in a material of given mass.
Kerma or "K" means the quantity defined by the International Commission on Radiation Units and Measurements. The kerma is the quotient of dEtr by dm, where dEtr is the sum of the initial kinetic energies of all charged particles liberated by uncharged particles in a mass dm of materials; thus K=dEtr/dm, in units of J/kg, where the special name for the units of kerma is gray (Gy). When the materials is air, the quantity is referred to as "air kerma."
Kerma. (K [italicized]) means kinetic energy released in a unit mass, determined by the quotient K = dEtr / dm, where dEtr is the sum of the initial kinetic energies of all the charged ionizing particles (such as electrons) liberated (transferred, Etr) by uncharged ionizing particles (such as neutrons and photons) in air of mass dm. Kerma is measured in joules per kilogram (J/kg).

Examples of Kerma in a sentence

  • Kerma is determined as the quotient of dE by dM, where dE is the sum of the initial kinetic energies of all the charged ionizing particles liberated by uncharged ionizing particles in air of mass dM.

  • Display of Total reference air Kerma and dose should be available.

  • The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise: * * * * * Air kermaKerma in air (see definition of Kerma).

  • These photons are capable of producing secondary electrons with kinetic energy close to 0.6 MeV.for distancesr ≤ 10 cmas recommended in AAPM andOnce this “equilibrium thickness” is surpassed, it is observedthat both quantities (photons-AD and Kerma profiles)ESTRO new report [1].

  • Third quartile values of the distributions of mean Entrance Skin Air Kerma (ESAK) observed for the most com- mon radiography examination were proposed as DRL values in Sudan .Representative sample of patients ‘‘at least 10 patient in each exam” from 30 governmental and private hospitals distributed over the country were included.


More Definitions of Kerma

Kerma means the sum of the initial kinetic energies of all the charged ionizing particles liberated by uncharged ionizing particles per unit mass of a specified material. The SI unit of measure is joule per kilogram, or gray (Gy).
Kerma or "K" means the quantity defined by the International Commission on Radiation Units and Measurements. The kerma is the quotient of dEtr by dm, where
Kerma means Kinetic Energy Released in Matter (Air). ‘MDMA’ means Medical Devises Marketing Authorization. ‘MI’ means Mechanical Index.