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Cherenkov Emission Measures Radiation Dose Delivered to Tissues

by Julia Samuel on February 27, 2015 at 3:09 PM
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Cherenkov Emission Measures Radiation Dose Delivered to Tissues

Researchers at Dartmouth are investigating on a new phenomenon called Cherenkov radiation to see whether it can be used as a tool for measuring the radiation dose delivered to different tissues during radiotherapy.

Cherenkov radiation is emitted when electrons are fired through water at a speed faster than the speed with which light travels in water.

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The team identified that the emitted Cherenkov radiation indicates the dose delivered by X-ray photons. Interventional radiologists can affirm the exact amount of therapy delivered to treatment sites in the near future.

The Dartmouth team concluded that the light emission suits x-ray photons is narrow beam stereo tactic radiation therapy, surgery validation studies, verification of dynamic intensity-modulated and volumetric modulated arc therapy treatment plans in water tanks near mono-energetic sources.
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Cherenkov emission was found to be only suitable for surface dosimetry applications for electron use. A fundamental lack of Cherenkov emission at the Bragg peak, for proton dosimetry, makes the technique of little use, although investigators say that post-irradiation detection of light emission from radioisotopes could prove to be useful.

Source: Medindia
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