J
Johannes P. A. Marijnissen
Researcher at Erasmus University Rotterdam
Publications - 36
Citations - 1294
Johannes P. A. Marijnissen is an academic researcher from Erasmus University Rotterdam. The author has contributed to research in topics: Light Dosimetry & Scattering. The author has an hindex of 21, co-authored 36 publications receiving 1263 citations. Previous affiliations of Johannes P. A. Marijnissen include Catholic University of Leuven.
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Journal ArticleDOI
Light dosimetry in optical phantoms and in tissues: I. Multiple flux and transport theory
TL;DR: It is concluded that far from boundaries and sources light propagation characteristics do not change very much when g and omega s are varied, provided omega s (1-g) is kept constant (omega s = scattering coefficient), so only two optical constants are required to approximately describe light propagation in homogeneous and isotropic media in the diffusion approximation.
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Measurements and calculations of the energy fluence rate in a scattering and absorbing phantom at 633 nm
Christian J. M. Moes,M. J. C. Van Gemert,Willem M. Star,Johannes P. A. Marijnissen,Scott A. Prahl +4 more
TL;DR: The influence of absorption, scattering, and refractive index of a phantom medium in conjunction with various beam diameters on the penetration depth of light at 633 nm is studied.
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Quantitative light dosimetry in vitro and in vivo
TL;DR: During experimental and clinical interstitial PDT-treatments a considerable decrease in light penetration into tumours was observed, apparently indicating changes in optical properties as a result of treatment, demonstrating the importance of in vivo light dosimetry.
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Calibration of isotropic light dosimetry probes based on scattering bulbs in clear media
TL;DR: The extent of agreement between theory and experiment indicates that the physical mechanisms are understood and indirectly validates the theoretical models.
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In situ light dosimetry during whole bladder wall photodynamic therapy : clinical results and experimental verification
TL;DR: The first clinical light dosimetry results are reported, and indicate variations in the true (total) light fluence between patients by a factor of at least 2.1, implying that the clinical variations are most likely to be the result of variations in optical properties of the bladder wall mucosa, probably due to the disease and prior treatments.