Using Mathematical Procedure to Compute the Attenuation Coefficient in Spectrometry Field
Journal Title: Journal of Radiology and Oncology - Year 2017, Vol 1, Issue 1
Abstract
In gamma-ray spectrometry, the analysis of the environmental radioactivity samples (soil, sediment and ash of a living organism) needs to know the linear attenuation coefficient of the sample matrix. This coefficient is required to calculate the self-absorption correction factor through the sample bulk. In addition, these parameters are very important because the unidentified samples can be different in the composition and density from the reference liquid sources which are usually used for efficiency calibration in the radioactive monitoring process. The present work is essentially concerned to introduce a mathematical method to calculate the linear attenuation coefficient without using any collimator. This method was based mainly on the calculations of the effective solid angle subtended by the source-to-the detector configurations, the efficiency transfer technique and the average path lengths through the samples itself. The method can be used as a tool for the calculation of the linear attenuation coefficient of unidentified materials with good facility to use it in the calibration process of γ-ray detectors, particularly in the study of soil samples. The results are compared with the data from NIST-XCOM to show how much the results are in close agreement and to give the validity of the approach.
Authors and Affiliations
M Elsafi, MM Gouda, MS Badawi, AA Thabet, AM El-Khatib, MI Abbas, KS Almugren
Keywords
Related Articles
- EP ID EP541101
- DOI 10.29328/journal.jro.1001003
- Views 120
- Downloads 0
Using Mathematical Procedure to Compute the Attenuation Coefficient in Spectrometry Field
In gamma-ray spectrometry, the analysis of the environmental radioactivity samples (soil, sediment and ash of a living organism) needs to know the linear attenuation coefficient of the sample matrix. This coefficient is...
Incidental findings in traditional nuclear medicine practice
The presence of an incidental finding, defined as an abnormality which is unrelated to the initial scanning indication, is widely increases due to the access to new devices and imaging modalities. This growing number of...
Adaptive planning and toxicities of uniform scanning proton therapy for lung cancer patients
Purpose: Adaptive planning is often needed in lung cancer proton therapy to account for geometrical variations, such as tumor shrinkage and other anatomical changes. The purpose of this study is to present our findings i...
Near Complete Response to 177Lu-PSMA-DKFZ-617 Therapy in a Patient with Metastatic Castration Resistant Prostate Cancer
Prostate specific membrane antigen, a type II transmembrane protein is an excellent target for the radionuclide therapy in advanced prostate cancer patients due to its high expression in the prostate cancer cells. We pre...
Dr. Saul Hertz Discovers the Medical Uses of Radioiodine (RAI)
Primary sources document Dr. Saul Hertz (1905 - 1950) as conceiving and developing radioiodine (RAI) as a diagnostic tool and as a therapy for thyroid diseases. Dr. Hertz was the first and foremost person to develop the...