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March 21, 2026Physics in Medicine and Biology0 citationsOpen Access

Simulating X-Ray Sources for Computed Tomography Using GATE 10 without Manufacturer Data

Methodology for simulating x-ray sources of computed tomography systems using GATE 10 without manufacturer data

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Authors

ALAnh Thu LêGRGinette RaymondRSRékia Sidibé

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Overview

Methodology implements source modeling for CT systems, assessing simulation accuracy without manufacturer data.

Key Points

  • This research aims to develop a method for simulating x-ray sources in computed tomography systems when manufacturer data is unavailable.
  • Implemented source modeling combining x-ray spectra and attenuation profiles using CdTe spectrometry and ionization chamber measurements.
  • Created basic (Single-spectrum) and complex (Multi-spectra) models for simulations in GATE 10.
  • Evaluated source models by comparing simulations to measurements of half-value layers and CT dose index across different voltages.
  • Single-spectrum and Multi-spectra models showed a mean difference of 4% compared to measurements.
  • CTDI values from Multi-spectra sources were within 7% of measured values, outperforming other models.
  • Single-spectrum model agreed with measurements (<10%) but underestimated doses by up to 16%, while the manufacturer's data had the largest discrepancies.
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Cite This Study

Lê et al. (2026) studied this question.

synapsesocial.com/papers/69be34af6e48c4981c672e2ehttps://doi.org/10.1088/1361-6560/ae5373
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