Hamza Sekkat

Publications

• Research Article   
  Radiological Characterization of a Tissue-Equivalent Material for Trabecular Bone: From Diagnostic Imaging to Radiotherapy
  Author(s): Walid Allioui*, Abdellah khallouqi, Hamza Sekkat, A. Slimani, Abdellah halimi and Omar El rhazouani
  
  The development of accurate trabecular bone-equivalent materials remains essential for improving the reliability of anthropomorphic phantoms used in medical imaging and radiotherapy. In this work, an epoxy–TiO? composite (75/25%) was developed and characterized over a wide photon energy range extending from 10 keV to 25 MeV. The evaluation combined theoretical calculations using the XCOM database, determination of effective atomic number and effective electron density using Phy-X/PSD, and experimental validation through computed tomography. At low energies (< 40 keV), the mass attenuation coefficient (μ/ρ) shows relative differences ranging from 8% to 14%, while Z_eff values remain close, with deviations within ±3% to ±5% around 10 keV. In the diagnostic energy range (50– 200 keV), μ/ρ values exhibit a strong agreement, with deviations genera.. Read More»
  

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