İSTANBUL-SARIYER İLÇESİNDEKİ BAZI TOPRAK ÖRNEKLERİNDE CS-137 KONSANTRASYONUN BELİRLENMESİ

Chronic Cs-137 incorporation in children's organs.

In Belarus's Gomel region, which was heavily contaminated by fallout from the Chernobyl disaster, we have studied the evolution of the Cs-137 load in the organisms of the rural population, in particular children, since 1990. Children have a higher average burden of Cs-137 compared with that of adults living in the same community. We measured the Cs-137 levels in organs examined at autopsy. The ...

Temporal variations of Cs-137 in Sots Pine

Sweden belongs to an exclusive group of nine countries in the world with a forest cover greater than 65% of the land area. Forest products make a large proportion of Sweden’s net export income. Not only wood fibres but also berries and meat from the forests are important. Game hunting, reindeer farming, berries and mushroom gathering, as well as fresh water fishery, are all included in human fo...

Variation of Cs-137 in California Coastal Sea Water.

A New Approach for Heterogeneity Corrections for Cs-137 Brachytherapy Sources

Background: Most of the current brachytherapy treatment planning systems (TPS) use the TG-43U1 recommendations for dosimetry in water phantom, not considering the heterogeneity effects.Objective: The purpose of this study is developing a method for obtaining correction factors for heterogeneity for Cs-137 brachytherapy sources based on pre-calculated MC simulations and interpolation.Method: To ...

The photon fluence non-uniformity correction for air kerma near Cs-137 brachytherapy sources.

The use of brachytherapy sources in radiation oncology requires their proper calibration to guarantee the correctness of the dose delivered to the treatment volume of a patient. One of the elements to take into account in the dose calculation formalism is the non-uniformity of the photon fluence due to the beam divergence that causes a steep dose gradient near the source. The correction factors...