Amount of energy deposited in matter by ionizing radiation
Absorbed dose of ionizing radiation
Common symbols
D
SI unit
Gray
Other units
Rad
In SI base units
J⋅kg−1
Absorbed dose is a dose quantity which is the measure of the energy deposited in matter by ionizing radiation per unit mass. Absorbed dose is used in the calculation of dose uptake in living tissue in both radiation protection (reduction of harmful effects), and radiology (potential beneficial effects, for example in cancer treatment). It is also used to directly compare the effect of radiation on inanimate matter such as in radiation hardening.
The SI unit of measure is the gray (Gy), which is defined as one Joule of energy absorbed per kilogram of matter.[1] The older, non-SI CGS unit rad, is sometimes also used, predominantly in the USA.
Absorbeddose is a dose quantity which is the measure of the energy deposited in matter by ionizing radiation per unit mass. Absorbeddose is used in the...
cancer and genetic damage. It is derived from the physical quantity absorbeddose, but also takes into account the biological effectiveness of the radiation...
absorbeddose D and the name sievert instead of joules per kilogram for the unit of dose equivalent H". In summary: gray: quantity D – absorbeddose 1 Gy...
than the charge. This is called the absorbeddose. The gray (Gy), with units J/kg, is the SI unit of absorbeddose, which represents the amount of radiation...
this dose is common, due generally more to infection than gastrointestinal dysfunction. Neurovascular. This syndrome typically occurs at absorbeddoses greater...
human tissue. The radiation weighting conversion factor from absorbeddose to equivalent dose is 1 for beta, whereas alpha particles have a factor of 20...
of the radiation dose received. Modern electronic personal dosimeters can give a continuous readout of cumulative dose and current dose rate, and can warn...
is reduced by a factor of ten, for example, the estimated equivalent absorbeddose due to the banana will be reduced in the same proportion. These amounts...
monitor chamber reads 100 MU when an absorbeddose of 1 gray (100 rads) is delivered to a point at the depth of maximum dose in a water-equivalent phantom whose...
equivalent dose H T and effective dose E are used, and appropriate dose factors and coefficients are used to calculate these from the absorbeddose. Equivalent...
the measurement, calculation and assessment of the ionizing radiation doseabsorbed by an object, usually the human body. This applies both internally,...
produces a biological response Absorbeddose, a measure of energy deposited in matter from ionizing radiation Equivalent dose, a measure of cancer/heritable...
specific quantity of deposited dose. More can be found on radiation dose and dose rate at absorbeddose and equivalent dose. Disintegrations per minute (dpm)...
primarily radiation-induced cancer. These quantities are derived from absorbeddose, which in the CGS system has the unit rad. There is no universally applicable...
dose calibrators - an inexact name for radionuclide radioactivity calibrators, which are used for measurement of radioactivity but not absorbeddose....
human tissue. The radiation weighting conversion factor from absorbeddose to equivalent dose is 1 for gamma, whereas alpha particles have a factor of 20...
radiation absorbeddose for tissue within the scan region, and is automatically computed by medical CT scanners. The equivalent dose is the effective dose of...
the becquerel (Bq) were introduced in 1975. Between 1953 and 1975, absorbeddose was often measured in rads. Decay activity was measured in curies before...
field. Dosimeters are instruments used to measure radiation dose - as absorbeddose or dose equivalent - and are an important cornerstone of radiation...
and interventional procedures, like angiography. It is defined as the absorbeddose multiplied by the area irradiated, expressed in gray-centimetres squared...
readily absorbed as charged particle radiation, which makes this type highly penetrating. In a process called neutron activation, neutrons are absorbed by...
used in conjunction with patient size to estimate the absorbeddose. The CTDI and absorbeddose may differ by more than a factor of two for small patients...
In radiotherapy, a percentage depth dose curve (PDD) (sometimes percent depth dose curve) relates the absorbeddose deposited by a radiation beam into...
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