Photon interaction parameters of different tissues of human organs

Abstract

<p>For proper planning in the radiography of different parts of human organs, knowledge of the photon interaction parameters in different tissues of human organs are essential. Studied the x-ray and gamma photon interaction parameters such as linear attenuation coefficient, half value layer, tenth value layer, mean free path and effective electron density of almost all tissues of human organs [Adipose tissue, Blood, Brain, Breast, Cell Nucleus, Eye Lens, GI tract, Heart, Kidney, Liver, Lung , Lymph, Muscle, Ovary, Pancreas, Cartilage, Red marrow, Spongiosa, Yellow marrow, Skin, Spleen, Testis, Thyroid, Skeleton cortical bone, Skeleton cranium, Skeleton femur, Skeleton humerus,Skeleton mandible, Skeleton ribs (2<sup>nd</sup>,6<sup>th</sup>), Skeleton ribs (10<sup>th</sup>), Skeleton sacrum, Skeleton spongiosa, Skeleton vertebral column (C4) and Skeleton vertebral column (D6, L3)]. The present work is useful in the planning of radiography for different organs. This work also gives useful information for radiotherapy and dosimetry.</p>

Validation of a Proposed Equation for Determining the Half-Thickness Value of Gamma and X-Ray Radiation

“…The HVL values calculated by both methods increased as the photon energy increased for all anatomical structures. The HVL value for bone tissue of an x-ray photon with an energy of 0.1 MeV has been reported to be 1.94 cm [18]. Jarrah et al, in the study in which they compared the results obtained with the Monte Carlo simulation and the Geometric Progression fitting method, the HVL value for the breast tissue is approximately 30 cm [19].…”

“…When reviewing the literature, it is discovered that innovative methodologies for computing HVL values are presented, which may give answers for medical and industrial radiation applications [9,10,18,19]. A review of the literature indicated that there is presently no Monte Carlo-based sufficient tool for direct calculation of the HVL value and direct computation suitable for material design and all changes based on sophisticated simulation methods [9,20].…”