16/23 of the patients underwent 3D conformal RT (linear accelerator), 1 underwent intensity modulated radiation therapy (IMRT) linear accelerator and the remaining 6 patients underwent 2D conformal RT (using a Co-60
source)-data is summarized in Table 1.
) based radiation therapy continues to play a significant role in not only developed countries but also in developing countries where access to radiation therapy is very limited.4 The easy handling of cobalt units gives them the advantage of reduced maintenance, running costs and downtime when compared with linear accelerators machines.
Moreover, irradiation with [gamma]-rays using a Co-60
source was considered as an effective method for the synthesis of noble metal nanoparticles .
Patients, he said, were being treated at Cobalt 60 (Co-60
) machine at present.
Theoretically, the graphite can retain radionuclides such as H3, C-14, and Cl-36, corrosion/activation products (Co-57, Co-60
, Mn-54, Ni-59, Ni-63, Na-22, etc.), fission products (Cs-134, Cs-137, Sr-90, Eu-152, Ce-144, etc.), and a small amount of uranium and transmutation elements (Pu-238, Pu-239, Am-241, Am-243, etc.).
In addition, gamma Co-60
ray irradiation has been also considered as a green method to noble metal nanoparticle synthesis .
A survey found no significant contamination but there were trace amounts of radioactive isotope Cobalt-60 (Co-60
) which has resulted in a warning letter from Natural Resources Wales.
Wu et al , Co-60
nuclei were polarized at T ~ 0.003 K and the parity conservation was tested.
Typically these use Co-60
or Cs-137 isotopes as the radiation source.
As the correspondence between the institutions continued, it emerged that in 2003 a teletherapy device containing the radioactive cobalt 60 (Co-60
), used to treat tumors, was returned to the Ecekmece Nuclear Research Center (EcNAEM) in ystanbul.