Beta Radiation


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Beta Radiation

 

the flow of electrons or positrons (beta particles) that are emitted during the beta decay of radioactive isotopes.

Effect on the organism. Beta radiation leads to the development of all the signs of radiation poisoning, even to the destruction of cells, tissues, or the entire organism. The effect of beta radiation is similar to the biological effect of ionizing radiations of other types. External irradiation of an organism by beta radiation affects only the surface tissues, since the penetrating power of beta particles does not exceed several millimeters. When 45Ca, 99Sr, and other beta-radioactive isotopes enter the organism, the nature of the radiation damage depends both on their distribution in the organs and tissues and on their half-life. The relative biological effectiveness of beta radiation is close to 1.

References in periodicals archive ?
Compared with gamma radiation--based brachytherapy, beta radiation involves far less radiation exposure to catheterization laboratory personnel.
NeoVista's epiretinal beta radiation therapy is currently being studied in a definitive Phase III clinical study to support eventual filing for regulatory approval to market the product in the United States.
All HIV-uninfected patients were treated with adjunctive beta radiation, and none experienced recurrences during the study period.
Any possible health effects from it are the result of the beta radiation it emits.
131]I emits mostly beta radiation, which penetrates surfaces more shallowly than gamma radiation.
Sirtex's SIR-Spheres microspheres are radioactive polymer spheres that emit beta radiation.
In contrast, NeoVista's therapy applies a targeted dose of beta radiation to the leaking blood vessels that affect central vision; concomitantly, two injections of an anti-VEGF agent are delivered one month apart to maximize the acute therapeutic response and additional anti-VEGF injections are given on a PRN basis.
announced today that the first European patient has been treated in the company's pivotal global clinical trial for its novel beta radiation epiretinal therapy for the wet form of age-related macular degeneration (AMD).
EndoSonics has been developing the device, named BRIGADE -- Beta Radiation with IVUS Guidance And Directed Energy -- in conjunction with Drs.
For alpha and beta radiation, all monitored median values were consistent with median values for a reference air monitor placed away from the site in St.
NeoVista's revolutionary therapy applies a targeted dose of beta radiation to the leaking blood vessels that affect central vision; concomitantly, two injections of an antiA vascular endothelial growth factor (anti-VEGF) agent are delivered to maximize the acute therapeutic response.
It combines the targeting ability of an anti-CD20 monoclonal antibody with the cytotoxic power of beta radiation emitted by the yttrium-90 isotope -- a pure beta emitter.