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Quantitative depth estimation of tumor invasion in early gastric cancer by scattering of circularly polarized light is computationally investigated using the Monte Carlo method. Using the optical parameters of the human stomach wall and its…

医学物理 · 物理学 2022-03-31 Nozomi Nishizawa , Takahiro Kuchimaru

Depolarization of circularly polarized light scattered from biological tissues depends on structural changes in cell nuclei, which can provide valuable information for differentiating cancer tissues concealed in healthy tissues. In this…

医学物理 · 物理学 2020-12-08 Nozomi Nishizawa , Bassam Al-Qadi , Takahiro Kuchimaru

Significance: Cervical cancer progresses through cervical intraepithelial neoplasia (CIN), which are precursor lesions of cervical cancer. In low-grade CIN, atypical cells generate inside the squamous epithelium, which causes the accuracy…

Significance: The depolarization of circularly polarized light caused by scattering in turbid media reveals structural information about the dispersed particles, such as their size, density, and distribution, which is useful for…

医学物理 · 物理学 2024-06-05 Nozomi Nishizawa , Asato Esumi , Yukito Ganko

The circular polarization of light scattered by biological tissues provides valuable information and has been considered as a powerful tool for the diagnosis of tumor tissue. We propose a non-staining, non-invasive and in-vivo cancer…

Multiple light scattering is widely used to characterize dense colloidal systems as well as in deep tissue imaging; experiments are often interpreted via a theory of diffusion of the light intensity within a sample, neglecting the vector…

软凝聚态物质 · 物理学 2007-05-23 A. C. Maggs , V. Rossetto

Significance: Changes in the structure of tissue occur in many disease processes, such as the boundaries of cancerous tumors and burn injuries. Spectroscopic and polarimetric alterations of terahertz light caused by Mie scattering patterns…

医学物理 · 物理学 2025-01-03 Erica Heller , Kuangyi Xu , Zachery Harris , M. Hassan Arbab

Polarimetric imaging can provide valuable information about biological samples in a wide range of applications. Detrimental scattering however currently limits the imaging depth of in-vivo imaging to approximately 1 transport mean free…

光学 · 物理学 2020-10-28 Kai Ling C. Seow , Peter Török , Matthew R. Foreman

High-contrast scattered light observations have revealed the surface morphology of several dozens of protoplanetary disks at optical and near-infrared wavelengths. Inclined disks offer the opportunity to measure part of the phase function…

地球与行星天体物理 · 物理学 2016-12-07 T. Stolker , C. Dominik , M. Min , A. Garufi , G. D. Mulders , H. Avenhaus

Some bright cD galaxies in cluster cooling flows have Thomson optical depths exceeding 0.01. A few percent of their luminosity is scattered and appears as diffuse polarized emission. We calculate the scattering process for different…

天体物理学 · 物理学 2009-10-22 B. W. Murphy , D. F. Chernoff

We study by means of experiments and Monte Carlo simulations, the scattering of light in random media, to determine the distance upto which photons travel along almost undeviated paths within a scattering medium, and are therefore capable…

无序系统与神经网络 · 物理学 2009-10-31 Venkatesh Gopal , Sushil Mujumdar , Hema Ramachandran , A. K. Sood

The traditional Thomson scattering diagnostic is based on measurement of the wavelength spectrum of scattered light, where electron temperature measurements are inferred from thermal broadening of the scattered laser light. At sufficiently…

等离子体物理 · 物理学 2015-06-17 E. Parke , V. V. Mirnov , D. J. Den Hartog

Direct imaging has paved the way for atmospheric characterization of young and self-luminous gas giants. Scattering in a horizontally-inhomogeneous atmosphere causes the disk-integrated polarization of the thermal radiation to be linearly…

地球与行星天体物理 · 物理学 2018-11-09 Tomas Stolker , Michiel Min , Daphne M. Stam , Paul Mollière , Carsten Dominik , Rens Waters

Spectropolarimetry from the near IR to the far UV of light scattered by dust provides a valuable diagnostic of the dust composition, grain size distribution and spatial distribution. To facilitate the use of this diagnostic, we present…

天体物理学 · 物理学 2009-10-31 Victor G. Zubko , Ari Laor

Scattering measurements with incident linearly polarized $\gamma$ rays provide information on spins, parities, and $\gamma$-ray multipolarity mixing coefficients, and, therefore, on the nuclear matrix elements involved in the transitions.…

核实验 · 物理学 2021-06-18 Christian Iliadis , Udo Friman-Gayer

Phase and polarisation of coherent light are highly perturbed by interaction with microstructural changes in pre-malignant tissue, holding promise for label-free early cancer detection in endoscopically accessible tissues such as the…

Compton scattering of twisted photons is investigated within a non-relativistic framework using first-order perturbation theory. We formulate the problem in the density matrix theory, which enables one to gain new insights into scattering…

原子物理 · 物理学 2015-07-03 S. Stock , A. Surzhykov , S. Fritzsche , D. Seipt

Scattering of re-emitted flux is considered to be at least partially responsible for the observed polarisation in the (sub-)millimetre wavelength range of several protoplanetary disks. Although the degree of polarisation produced by…

太阳与恒星天体物理 · 物理学 2020-08-26 Robert Brunngräber , Sebastian Wolf

Debris disks give us the unique opportunity to probe the properties of small $\mu$m-sized particles, allowing us to peer into the constituents of their parent bodies, young analogs of comets and asteroids of our solar system. In the past,…

地球与行星天体物理 · 物理学 2024-06-06 Johan Olofsson , Philippe Thébault , Amelia Bayo , Thomas Henning , Julien Milli

Modeling the propagation of light through disordered media is central to understanding and controlling wave transport in diverse optical and mesoscopic applications. Here, we present a random matrix simulation framework for modeling the…

光学 · 物理学 2026-02-24 Niall Byrnes , Sulagna Dutta , Matthew R. Foreman
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