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radiation dose

the amount of radiation an object (such as human tissue) receives. Several units are used to describe radiation doses, as listed below.

rad (acronym for radiation absorbed dose) – a basic unit of the amount of radiation transferred to an object. This measurement does not take into account the type of radiation, which can influence the effect on different body tissues. The rad has largely been replaced by the gray measurement scale (see next).

gray (abbreviated Gy) – the newer, international unit of measurement of radiation transfer. One gray equals 100 rads, and a centigray is 1/100th of a gray. So, one rad equals one centigray (cGy). 1/1000 of a gray is called a milligray (mGy).

rem (acronym for roentgen equivalent man) – a basic unit of radiation exposure which is based on both the dose and the type of radiation. Because of this, it is more commonly used to describe radiation exposure in humans than is the rad. Often reported in units of millirem (mrem), which is 1/1000 of a rem. The rem is sometimes replaced by the sievert (see next).

sievert (see-vert) abbreviated Sv. A newer, international unit of measurement of human radiation exposure. One sievert equals 100 rem. Often reported in millisieverts (mSv), which are thousandths of a sievert (or 1/10 of a rem).

Radiation Exposure and Cancer

... Learn About Cancer » What Causes Cancer? » Radiation Exposure and Cancer.
Share this Page. Close. ... Radiation Exposure and Cancer. ...

http://www.cancer.org/cancer/cancercauses/radiationexposureandcancer/index

High-dose chemotherapy/radiation therapy and stem cell ...

... Giving higher doses of chemotherapy (and sometimes radiation) might be ... get
around this problem by giving the high-dose treatments, then ...

http://www.cancer.org/cancer/neuroblastoma/detailedguide/neuroblastoma-treating-high-dose-chemo-radiation

Can I avoid exposure to radiation from x-rays and gamma rays ...

... than the small dose of radiation ... detailed information about radiation doses
from imaging ... protecting workers from radiation exposure, including the ...

http://www.cancer.org/cancer/cancercauses/radiationexposureandcancer/xraysgammaraysandcancerrisk/x-rays-gamma-rays-and-cancer-risk-avoiding-exposure

How can I avoid exposure to UV radiation?

... » Radiation Exposure and Cancer » Ultraviolet (UV) Radiation » How can
I avoid exposure to UV radiation? Share this Page. Close. ...

http://www.cancer.org/cancer/cancercauses/radiationexposureandcancer/uvradiation/uv-radiation-avoiding-uv

Radiation therapy for non-Hodgkin lymphoma in children

... of treatment for children receiving high-dose chemotherapy and ... try to avoid
using radiation therapy in children or limit the doses used whenever ...

http://www.cancer.org/cancer/non-hodgkinlymphomainchildren/detailedguide/non-hodgkin-lymphoma-in-children-treating-radiation-therapy1

Radiation therapy for prostate cancer

... Because there are large doses of radiation in each dose, the entire
course of treatment is given over just a few days. ...

http://www.cancer.org/cancer/prostatecancer/detailedguide/prostate-cancer-treating-radiation-therapy

External beam radiation

... For external radiation, the total dose is often divided into smaller doses (called
fractions) that are most often given over a number of weeks. ...

http://www.cancer.org/treatment/treatmentsandsideeffects/treatmenttypes/radiation/radiationtherapyprinciples/radiation-therapy-principles-how-is-radiation-given-external-beam-rad

High-dose chemotherapy and stem cell transplant for non ...

... High-dose chemotherapy and stem cell transplant for non ... allow doctors to use
higher doses of chemotherapy ... Radiation is sometimes given as well. ...

http://www.cancer.org/cancer/non-hodgkinlymphoma/detailedguide/non-hodgkin-lymphoma-treating-bone-marrow-stem-cell

Radiation therapy for adult brain and spinal cord tumors ...

... High doses of radiation therapy can damage normal brain tissue, so doctors
try to deliver the radiation to the tumor with the lowest possible dose to ...

http://www.cancer.org/cancer/braincnstumorsinadults/detailedguide/brain-and-spinal-cord-tumors-in-adults-treating-radiation-therapy

Radiation therapy for brain and spinal cord tumors in children

... therapy can damage normal brain tissue, so doctors try to deliver high doses
of radiation to the tumor with the lowest possible dose to normal ...

http://www.cancer.org/cancer/braincnstumorsinchildren/detailedguide/brain-and-spinal-cord-tumors-in-children-treating-radiation-therapy