In radiology, the amount of energy that is deposited in any material by ionizing radiation. The unit of absorbed dose, the rad, is a measure of energy absorbed per gram of material. An alternative unit of absorbed dose is the gray. One gray equals 100 rads.

internal dose Amount (of a substance) taken up by an organism or into organs or tissues of interest. See absorption, systemic

, D Energy imparted by ionizing radiation to a specified volume of matter divided by the mass of that volume.

The absorbed dose D is the quotient of the average energy transferred to the matter in a volume element by ionizing radiation and the mass of the matter in this volume element:

The amount of a chemical that enters the body of an exposed organism.

The amount of energy imparted by nuclear radiation to unit mass of absorbing material. The unit is the rad.

Absorbed dose is the amount of energy from radiation deposited or absorbed by an object per unit mass. The SI unit of absorbed dose is the Gray (Gy) or J/kg.

The amount of energy deposited in any substance by ionizing radiation per unit mass of the substance. It is expressed numerically in rads (traditional units) or grays (SI units).

(Animation) the amount of energy deposited by ionizing radiation in a unit mass of tissue. It is expressed in units of joule per kilogram (J/kg), and called “Gray” (Gy). For more information, see “Pri [..]

The quantity of energy imparted to unit mass of matter (such as tissue) by Ionising Radiation . Unit Gray (Gy). {1Gy = 1 joule per kilogram}. In the older (non SI) units it can be shown that 1Gy = 100 [..]

According to 10 CFR 20.1003 [Title 10 – Energy; Chapter I -- Nuclear Regulatory Commission; Part 20 -- Standards for Protection Against Radiation; Subpart A -- General Provisions], the term absorbed d [..]

The amount of a chemical absorbed into the body or into organs and tissues of interest (WHO, 1978a).

The energy imparted to matter in a suitably small element of volume by ionizing radiation divided by the mass of that element of volume (ISO, 1972). The SI unit for absorbed dose is joule per kilogram [..]

In exposure assessment, the amount of a substance that penetrates an exposed organism's absorption barriers (e.g. skin, lung tissue, gastrointestinal tract) through physical or biological process [..]

In exposure assessment, the amount of a substance that penetrates an exposed organism's absorption barriers (e.g. skin, lung tissue, gastrointestinal tract) through physical or biological proce [..]

The amount of energy absorbed per unit mass of irradiated material at the target site; in radiation therapy, the former unit for absorbed dose is the rad; the current (S.I.) unit is the gray. (05 Mar 2000)