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Abstract. Purpose: The purpose of this study was to simulate and validate organ doses from different computed tomography (CT) localizer radiograph geometries using Monte Carlo methods for a population of patients. Methods: A Monte Carlo method was developed to estimate organ doses from CT localizer radiographs using PENELOPE.
15 de nov. de 2011 · Current estimation of radiation dose from computed tomography (CT) scans on patients has relied on the measurement of Computed Tomography Dose Index (CTDI) in standard cylindrical phantoms, and calculations based on mathematical representations of “standard man”.
3 de may. de 2023 · The normalized dose coefficient (NDC) is determined from the water-equivalent diameter (WED) and is used to scale the CTDIvol based on body habitus to determine the size specific dose estimate (SSDE).
1 de sept. de 1993 · Normalised Organ Doses for X Ray Computed Tomography Calculated Using Monte Carlo Techniques and a Mathematical Anthropomorphic Phantom | Radiation Protection Dosimetry | Oxford Academic. Volume 49. Issue 1-3. 1 September 1993. Journal Article.
19 de dic. de 2017 · Four methodologies were evaluated for quantifying kilovoltage cone-beam computed tomography (CBCT) dose: the Cone-Beam Dose Index (CBDI), IAEA Report 5 recommended methodology (IAEA), the AAPM Task Group 111 methodology (TG111), and the current dose metric; the Computed Tomography Dose Index (CTDI) on two commercial Varian cone-beam CT imaging s...
To develop diagnostic reference levels (DRLs) and achievable doses (ADs) for the 10 most common adult computed tomographic (CT) examinations in the United States as a function of patient size by using the CT Dose Index Registry. Materials and Methods.
1 de ago. de 2023 · This study aims to compare two methods for the organ dose evaluation in computed tomography (CT) in the head- and thorax regions: an experimental method, using radiochromic films, and a computational one, using a commercial software. Methods.
