Gigabecquerel

Gigabecquerel (GBq) is a unit of radioactivity used in the International System of Units (SI). It is defined as one billion (10^9) becquerel, which is a measure of the number of radioactive decay events per second.

Definition

The gigabecquerel is a derived SI unit that measures the activity of a radioactive source. It is named after the French physicist Henri Becquerel, who shared the 1903 Nobel Prize in Physics for the discovery of radioactivity. One gigabecquerel is equivalent to one billion becquerels, or 10^9 becquerels.

Usage

The gigabecquerel is commonly used in the field of nuclear medicine to quantify the activity of radiopharmaceuticals. It is also used in radiation therapy and radiology to measure the amount of radiation emitted by a source.

Conversion

One gigabecquerel is equivalent to 27 curies, an older non-SI unit of radioactivity. The curie was originally defined as the amount of radioactivity in one gram of radium-226, and is approximately 3.7 x 10^10 becquerels.

See also

• Becquerel
• Curie (unit)
• Radioactivity
• Radiopharmaceutical
• Radiation therapy
• Radiology

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