TY - JOUR T1 - Time Dependent Monte Carlo (TDMC) Simulation Data Output for Photon-Tissue Interactions AU - Kazancı, Huseyin Ozgur PY - 2018 DA - December JF - The Eurasia Proceedings of Science Technology Engineering and Mathematics JO - EPSTEM PB - ISRES Publishing WT - DergiPark SN - 2602-3199 SP - 176 EP - 181 IS - 4 LA - en AB - Timedependent (TD) Monte Carlo (TDMC) photon-tissue interactions simulation programcode generated photon fluencies (Joule/cm²) for ten picosecond (ps) time series[100 , 200,  … 1000] for Continuous Wave(CW) laser source. TD MC ANSI Standard C program code “trmc.c” was modified andcompiled to generate photon fluence distributions inside the imaging tissuemodel. Cylindrical coordinate system was chosen to compile the ANSI standard Cbased photon walk program code. Radial r, and depth z axis created cylindricalmesh grid (r, z) array. Collimated isotropic point laser source within asemi-infinite homogeneous medium was used. Radial diameter of cylindricalcoordinate system 2r = 6.0 cm, depth z = 3.0 cm. In this study, TD analysis ofCW MC photon fluencies for the photon-tissue interactions simulation mesh gridgeometry for Nz = 30, and Nr = 30 dimensions within 3 cm x 6 cm was performed.In the MC simulation program code, the tissue absorption and scatteringcoefficients were chosen as a = 0, and s = 100 cm-1.60.000 photons were sent into the tissue from (x, y, z) = (3.0, 3.0, 3.0) cmisotropic laser source position. The values of photon fluencies are varyingdepend on the time in tissue environment were recorded in the ANSI standard Cprogram data output file. The time intervals were chosen by 100 picosecond (ps)steps, from 100 ps to 1000 ps sequentially. Depend on the increasing timesteps, CW photon migration was observed inside the tissue, successfully. TDanalysis of CW photon fluencies will be used when making the time resolveddiffuse optic tomography (TRDOT) device. Forward model problem weight matrixwill be built based on the TD distributions of MC photon fluencies, then photonfluencies will be used in the inverse problem solution image reconstructionalgorithm. The location of buried inclusions will be determined.  KW - Time resolved (TR) Monte Carlo (MC) simulation photon fluencies KW - Continuous wave light CR - S.L. Jacques, https://omlc.org/classroom/ece532/class4/trmc/trmc.c Patterson, M.S., Chance, B., & Wilson, B.C. (1989). Time resolved reflectance and transmittance for the non-invasive measurement of tissue optical properties. Applied Optics, 28(12), 2331-2336. Ueda, Y., Ohta, K., & Yamashita, Y., (2005). Diffuse Optical Tomography using Time-resolved Photon Path Distribution, Optical Review, 12(4), 334–337. Sakami, M., & Mitra, K. (2002). Analysis of short-pulse laser photon transport through tissues for optical tomography, Optics Letters, 27(5), 336-338. Delpy, D.T., Cope, M., Zee, P., Arridge, S., Wray, S., & Wyatt, J. (1988). Estimation of optical pathlength through tissue from direct time of flight measurement. Phys. Med. Biol., 33(12), 1433-1442. S. Landgraf. (2003). Application of laser diodes and ultrabright light emitting diodes for static and time-resolved optical methods in physical chemistry. Handbook of Luminescence, Display Materials and Devices, 3, 372-394. UR - https://dergipark.org.tr/en/pub/epstem/issue//498036 L1 - https://dergipark.org.tr/en/download/article-file/598217 ER -