Imane Hattal
Mohammed First University, Faculty of Sciences, LPTPME, 60000, Oujda, MoroccoPublications
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Research Article
Dosimetric Impact of Systematic Hounsfield Units Shifts on Prostate VMAT Treatment Planning
Author(s): Imane Hattal*, A. Rrhioua, A. El Outmani, M. Zerfaoui, D. Bakari and Y. Oulhouq
Background: Accurate conversion of computed tomography (CT) Hounsfield Units (HU) into relative electron density (RED) is fundamental for precise dose calculation in external beam radiotherapy. Variations in the HU-RED calibration curve, arising from scanner drift, acquisition parameters, or reconstruction algorithms, may introduce dosimetric uncertainties that could affect treatment outcomes. Purpose: This study aimed to systematically evaluate the dosimetric impact of HU calibration variations on volumetric modulated arc therapy (VMAT) treatment plans for prostate cancer, focusing on target coverage and organs at risk (OARs) sparing. Methods: A reference HU-RED calibration curve was established using a CIRS Model 062M electron density phantom scanned with a Philips Brilliance Big Bore CT scanner. Two modified cur.. Read More»
Editors List
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RAOUi Yasser
Senior Medical Physicist
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Ahmed Hussien Alshewered
University of Basrah College of Medicine, Iraq
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Sudhakar Tummala
Department of Electronics and Communication Engineering SRM University – AP, Andhra Pradesh
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Alphonse Laya
Supervisor of Biochemistry Lab and PhD. students of Faculty of Science, Department of Chemistry and Department of Chemis
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Fava Maria Giovanna
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