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- W4320150123 abstract "<b>Purpose:</b> The application of radiotherapy to the treatment of cancer requires the knowledge of photon interaction coefficients such as mass attenuation (μ<sub>m</sub>) and mass energy-absorption coefficients (μ<sub>en</sub>/ρ). Although these coefficients have been determined for different tissues, it is lacking for the colorectal cancer (CRC) tissue in the literature. This study determines the μ<sub>m</sub> and μ<sub>en</sub>/ρ for the CRC tissue within the radiotherapy energy range. <b>Materials and Methods:</b> The CRC tissue from autopsy patients was freeze-dried, grounded into a fine powder, and made into pellets of 1 cm thickness. The elements detected in the CRC tissue using Rutherford backscattering spectrometry were used in XCOM to determine the theoretical values of μ<sub>m</sub> and μ<sub>en</sub>/ρ. The CRC tissue was again exposed to X-rays of energies of 6 and 15MV, respectively, to determine its experimental values of μ<sub>m</sub> and μ<sub>en</sub>/ρ. <b>Results:</b> Elements detected included carbon, oxygen and nitrogen making up 96.67%, high atomic number and trace elements making up the remaining 3.33% fraction of the CRC tissue. <b>Conclusion:</b> The theoretical and experimental μ<sub>m</sub> and μ<sub>en</sub>/ρ values showed a good agreement of about 2% difference between them. These values can be used to simulate the CRC tissue with respect to μ<sub>m</sub> and μ<sub>en</sub>/ρ." @default.
- W4320150123 created "2023-02-13" @default.
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- W4320150123 date "2022-01-01" @default.
- W4320150123 modified "2023-09-27" @default.
- W4320150123 title "Photon interaction coefficients for the colorectal cancer tissue" @default.
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- W4320150123 doi "https://doi.org/10.4103/jmp.jmp_29_22" @default.
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