dc.contributor.author | Piao, Daqing | |
dc.contributor.author | Barbour, Randall L. | |
dc.contributor.author | Graber, Harry L. | |
dc.contributor.author | Lee, Daniel C. | |
dc.date.accessioned | 2023-07-06T20:51:29Z | |
dc.date.available | 2023-07-06T20:51:29Z | |
dc.date.issued | 2015-10-14 | |
dc.identifier | oksd_piao_on_the_geometry_dependence_2015 | |
dc.identifier.citation | Piao, D., Barbour, R.L., Graber, H.L., Lee, D.C. (2015). On the geometry dependence of differential pathlength factor for near-infrared spectroscopy. I. Steady-state with homogeneous medium. Journal of Biomedical Optics, 20(10), 105005-105005. https://doi.org/10.1117/1.JBO.20.10.105005 | |
dc.identifier.issn | 1083-3668 | |
dc.identifier.uri | https://hdl.handle.net/11244/337901 | |
dc.description.abstract | This work analytically examines some dependences of the differential pathlength factor (DPF) for steady-state photon diffusion in a homogeneous medium on the shape, dimension, and absorption and reduced scattering coefficients of the medium. The medium geometries considered include a semi-infinite geometry, an infinite-length cylinder evaluated along the azimuthal direction, and a sphere. Steady-state photon fluence rate in the cylinder and sphere geometries is represented by a form involving the physical source, its image with respect to the associated extrapolated half-plane, and a radius-dependent term, leading to simplified formula for estimating the DPFs. With the source-detector distance and medium optical properties held fixed across all three geometries, and equal radii for the cylinder and sphere, the DPF is the greatest in the semi-infinite and the smallest in the sphere geometry. When compared to the results from finite-element method, the DPFs analytically estimated for 10 to 25 mm source-detector separations on a sphere of 50 mm radius with μa = 0.01 mm-1 and μ′ₛ=1.0 mm-1 are on average less than 5% different. The approximation for sphere, generally valid for a diameter ≥20 times of the effective attenuation pathlength, may be useful for rapid estimation of DPFs in near-infrared spectroscopy of an infant head and for short source-detector separation. | |
dc.format | application/pdf | |
dc.language | en_US | |
dc.publisher | SPIE, the international society for optics and photonics | |
dc.relation.ispartof | Journal of Biomedical Optics, 20 (10) | |
dc.relation.uri | https://www.ncbi.nlm.nih.gov/pubmed/26465613 | |
dc.rights | This material has been previously published. In the Oklahoma State University Library's institutional repository this version is made available through the open access principles and the terms of agreement/consent between the author(s) and the publisher. The permission policy on the use, reproduction or distribution of the material falls under fair use for educational, scholarship, and research purposes. Contact Digital Resources and Discovery Services at lib-dls@okstate.edu or 405-744-9161 for further information. | |
dc.title | On the geometry dependence of differential pathlength factor for near-infrared spectroscopy. I. Steady-state with homogeneous medium | |
dc.date.updated | 2023-07-02T13:36:06Z | |
dc.note | open access status: Hybrid OA | |
osu.filename | oksd_piao_on_the_geometry_dependence_2015.pdf | |
dc.identifier.doi | 10.1117/1.JBO.20.10.105005 | |
dc.description.department | Electrical & Computer Engineering | |
dc.type.genre | Article | |
dc.type.material | Text | |
dc.subject.keywords | physical sciences | |
dc.subject.keywords | classical physics | |
dc.subject.keywords | optical physics | |
dc.subject.keywords | biomedical engineering | |
dc.subject.keywords | optics | |
dc.subject.keywords | ophthalmology and optometry | |
dc.subject.keywords | atomic, molecular and optical physics | |
dc.subject.keywords | computer simulation | |
dc.subject.keywords | infrared rays | |
dc.subject.keywords | models, biological | |
dc.subject.keywords | nephelometry and turbidimetry | |
dc.subject.keywords | scattering, radiation | |
dc.subject.keywords | spectroscopy, near-infrared | |
dc.identifier.author | ORCID: 0000-0003-0922-6885 (Piao, D) | |
dc.identifier.author | ScopusID: 7005153312 | 57220465193 (Piao, D) | |
dc.identifier.author | ResearcherID: I-1341-2013 (Piao, D) | |
dc.identifier.author | ScopusID: 7101779578 (Barbour, RL) | |
dc.identifier.author | ScopusID: 7103278551 (Graber, HL) | |
dc.identifier.author | ScopusID: 56676976600 (Lee, DC) | |
dc.identifier.essn | 1560-2281 | |