50 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Hamamatsu Photonics (Japan)JP6 papers
- Hamamatsu UniversityJP4 papers
- Hamamatsu Medical CenterJP3 papers
- Hokkaido UniversityJP3 papers
- Shanghai University of Finance and EconomicsCN3 papers
- The University of TokyoJP3 papers
- Shizuoka UniversityJP2 papers
- University of TsukubaJP2 papers
- Chiba Institute of TechnologyJP1 paper
- Hirosaki UniversityJP1 paper
- Kobe UniversityJP1 paper
- National Institute of InformaticsJP1 paper
19 papers
Direct Imaging of Temperature Evolution of Polar Nanoregions and Chemically Ordered Regions in PMN Relaxor: Evidence for Polar Phase Percolation
Kohei Hino, Daisuke Morikawa, Desheng Fu +2
Polar nanoregions (PNRs) are central to understanding the exceptional dielectric and piezoelectric properties of relaxor ferroelectrics and are key to advancing dielectrics for hig…
Robot can reduce superior's dominance in group discussions with human social hierarchy
Kazuki Komura, Kumi Ozaki, Seiji Yamada
This study investigated whether robotic agents that deal with social hierarchical relationships can reduce the dominance of superiors and equalize participation among participants…
List-Mode PET Image Reconstruction Using Dykstra-Like Splitting
Kibo Ote, Fumio Hashimoto, Yuya Onishi +1
Convergence of the block iterative method in image reconstruction for positron emission tomography (PET) requires careful control of relaxation parameters, which is a challenging t…
List-Mode PET Image Reconstruction Using Deep Image Prior
Kibo Ote, Fumio Hashimoto, Yuya Onishi +2
List-mode positron emission tomography (PET) image reconstruction is an important tool for PET scanners with many lines-of-response and additional information such as time-of-fligh…
Anatomical-Guided Attention Enhances Unsupervised PET Image Denoising Performance
Yuya Onishi, Fumio Hashimoto, Kibo Ote +4
Although supervised convolutional neural networks (CNNs) often outperform conventional alternatives for denoising positron emission tomography (PET) images, they require many low-…
TRINITY: a three-dimensional time-dependent radiative transfer code for in-vivo near-infrared imaging
Hidenobu Yajima, Makito Abe, Masayuki Umemura +2
We develop a new three-dimensional time-dependent radiative transfer code, TRINITY (Time-dependent Radiative transfer In Near-Infrared TomographY), for in-vivo diffuse optical tomo…
Global Lipschitz stability for inverse problems for radiative transport equations
Manabu Machida, Masahiro Yamamoto
We consider inverse problems of determining coefficients or time independent factors of source terms in radiative transport equations by means of Carleman estimate. We establish gl…
Linear transport in porous media
Kenji Amagai, Yuko Hatano, Manabu Machida
The linear transport theory is developed to describe the time dependence of the number density of tracer particles in porous media. The advection is taken into account. The transpo…
Decay behavior and optical parameter identification for spatial-frequency domain imaging by the radiative transport equation
Manabu Machida, Yoko Hoshi, Keiichiro Kagawa +1
The decay behavior of the specific intensity is studied for the spatial-frequency domain imaging (SFDI). It is shown using the radiative transport equation that the decay is given…
Diffuse optical tomography by simulated annealing via a spin Hamiltonian
Yu Jiang, Manabu Machida, Norikazu Todoroki
Diffuse optical tomography (DOT) is an imaging modality which uses near-infrared light. Although iterative numerical schemes are commonly used for its inverse problem, correct solu…
Fast and robust reconstruction algorithm for fluorescence diffuse optical tomography assuming a cuboid target
Chunlong Sun, Yu Jiang, Jijun Liu +3
A fast and robust algorithm for fluorescence diffuse optical tomography is proposed. We identify the location of a fluorescence target by assuming a cuboid. The proposed numerical…
A hybrid inversion scheme combining Markov chain Monte Carlo and iterative methods for determining optical properties of random media
Yu Jiang, Yoko Hoshi, Manabu Machida +1
Near-infrared spectroscopy (NIRS) including diffuse optical tomography is an imaging modality which makes use of diffuse light propagation in random media. When optical properties…
Born series for the photon diffusion equation perturbing the Robin boundary condition
Manabu Machida, Gen Nakamura
The photon diffusion equation is solved making use of the Born series for the Robin boundary condition. We develop a general theory for arbitrary domains with smooth enough boundar…
Global Lipschitz stability for a fractional inverse transport problem by Carleman estimates
Atsushi Kawamoto, Manabu Machida
We consider a fractional radiative transport equation, where the time derivative is of half order in the Caputo sense. By establishing Carleman estimates, we prove the global Lipsc…
The time-fractional radiative transport equation -- Continuous-time random walk, diffusion approximation, and Legendre-polynomial expansion
Manabu Machida
We consider the radiative transport equation in which the time derivative is replaced by the Caputo derivative. Such fractional-order derivatives are related to anomalous transport…
Numerical algorithms of the radiative transport equation using rotated reference frames for optical tomography with structured illumination
Manabu Machida
We consider optical tomography with structured illumination in spatial-frequency domain using the three-dimensional radiative transport equation. Without the diffusion approximatio…
A model study of cooperative binding of ionic surfactants to oppositely charged flexible polyions
T. Nishio, T. Shimizu, Sh. Yoshida +1
A novel statistical model for the cooperative binding of monomeric ligands to a linear lattice is developed to study the interaction of ionic surfactant molecules with flexible pol…
Tableau Formulas for One-Row Macdonald Polynomials of Types and
Boris Feigin, Ayumu Hoshino, Masatoshi Noumi +2
We present explicit formulas for the Macdonald polynomials of types and in the one-row case. In view of the combinatorial structure, we call them "tableau formulas". Fo…
Chandrasekhar polynomials -- A brief review
Manabu Machida
A review on the Chandrasekhar polynomials is given. The polynomials often appear in transport theory. The relation to the method of rotated reference frames for the three-dimension…