کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1879858 1532131 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Standardization of 99mTc
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Standardization of 99mTc
چکیده انگلیسی
The radioactivity of 99mTc was standardized by the 4πPC-γ coincidence method with two different modes. One is using coincidences between (119.5-142.6) keV conversion electrons and K X-rays, and the other is coincidences between the 2.13 keV conversion electrons and 140.5 keV γ-rays. The background of the K X-ray peak and the sensitivity of the proportional counter (PC) to 140 keV γ-rays were the main sources of uncertainties in the first case and low detection efficiency for conversion electrons in the second case. General coincidence equations were written, with specific forms, for the three measurement variants, including literature variant. Comparison with the ionization chamber calibration is reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 64, Issues 10–11, October–November 2006, Pages 1234-1237
نویسندگان
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