Mathematical descriptions of a one- and five-year old child for use in dosimetry calculations

Hwang, Jun-Ho; Shoup, R.L.; Warner, G.G.; Poston, J.W.

doi:10.2172/7352667

Cited by 14 publications

(9 citation statements)

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“…This type of model was introduced by Fisher and Snyder [3,4] for the adult human and was further refined by Snyder et al [5,6]. From this, several paediatric models were derived to represent infants and children of various ages [7,8,9,10,11,12,13,14]. Male and female adult mathematical models have been introduced by Kramer et al [15].…”

Section: Introductionmentioning

confidence: 99%

The adult male voxel model ”Golem" segmented from whole-body CT patient data

Zankl¹,

Wittmann²

2001

Radiation and Environmental Biophysics

181

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This paper describes the construction of an adult male voxel model named "Golem" intended to be used for Monte Carlo simulations to calculate dosimetric quantities for radiation protection considerations. The model was segmented from whole-body medical image data of a living person who was 38 years old and had external dimensions close to those of the ICRP Reference Man. The segmentation process using dedicated image processing hard- and software is described and the resulting model is characterised with respect to weight and height of the total body, organ and tissue masses and red bone marrow distribution. A comparison with the respective data for ICRP Reference Man and three further voxel models is presented. Golem was found to agree reasonably well with Reference Man, so that he can be used for the assessment of "representative" body doses.

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Section: Introductionmentioning

confidence: 99%

The adult male voxel model ”Golem" segmented from whole-body CT patient data

Zankl¹,

Wittmann²

2001

Radiation and Environmental Biophysics

181

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“…1 Numerical voxel-based computational models of biological structures are used to investigate the interaction between RF source and human body parts. Initially, mathematical models of adults and children were used for this purpose (19,20). These models were represented by equations of planes, spheres, cones, ellipsoids, elliptical cylinders or cylinders and do not conform to the shape of real anatomical organs.…”

Section: Subject Specific Rfa Planning Using Ct/mr Based Dicom Data Amentioning

confidence: 99%

Offline RF thermal ablation planning using CT/MRI scan data

Ali¹,

Ray

2015

The Egyptian Journal of Radiology and Nuclear Medicine

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In this paper, steady state temperature variations in the human brain due to different electrical and physical changes have been studied considering different thermal ablation treatment requirements using RF probe. Initially, a subject specific voxel-based electrical model has been constructed from Digital Imaging and Communication in Medicine (DICOM) formatted Computed Tomography (CT) or Magnetic Resonance (MR) based image stacks with different pixel characteristics using the Hounsfield unit extraction technique. This subject specific electrical model that consists of different dielectric constant and conductivity, considering different anatomical organs and tissues is simulated using commercially available finite integral technique (FIT) based EM simulation software CST Microwave Studio Ò . This study clearly shows the possibility of subject specific precise offline microwave thermal ablation treatment planning.

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“…Mathematical descriptions (phantoms) representing one-year-old and five-year-old children have been designed (Hwang et al, 1976) in a manner similar to the adult phantom of Fisher and Snyder (1967).…”

Section: Chapter III Experimental Apparatus and Procedures " Phantom mentioning

confidence: 99%

“…For all these sections the circumference of each section was found in the anatomical references (Snyder et al, 1975); ali of the remaining dimensions were then determined to fit within the assigned volumes. the mathematical· equations describing the child phantoms are given by Hwang et al (1976).…”

Section: Chapter III Experimental Apparatus and Procedures " Phantom mentioning

confidence: 99%