Dose-volume histogram
Dose-Volume Histogram
A Dose-Volume Histogram (DVH) (pronounced: dose-volume his-to-gram) is a graphical representation used in Radiation Therapy to quantify the trade-off between the tumor dose and the volume of healthy tissue irradiated.
Etymology
The term "Dose-Volume Histogram" is derived from its function. "Dose" refers to the amount of radiation delivered to a specific area, "Volume" refers to the amount of tissue irradiated, and "Histogram" is a graphical representation of data distribution.
Function
In Radiation Oncology, a DVH is used to evaluate treatment plans. It provides a statistical overview of the dose distribution within the tumor and the surrounding healthy tissues. The x-axis represents the dose of radiation, while the y-axis represents the volume of tissue receiving that dose.
Related Terms
- Radiation Therapy: The use of high-energy radiation to shrink tumors and kill cancer cells.
- Tumor: An abnormal growth of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function.
- Radiation: Energy that comes from a source and travels through space and may be able to penetrate various materials.
- Radiation Oncology: A medical specialty that involves the controlled use of radiation to treat cancer.
See Also
- Radiation Dose: The amount of radiation absorbed by an object or person.
- Radiation Oncologist: A doctor who specializes in using radiation to treat cancer.
- Radiation Physics: The study of the physical properties and behavior of radiation.
External links
- Medical encyclopedia article on Dose-volume histogram
- Wikipedia's article - Dose-volume histogram
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