Search Results - "Arridge, S R"

Estimating chromophore distributions from multiwavelength photoacoustic images by Cox, B T, Arridge, S R, Beard, P C

“…Biomedical photoacoustic tomography (PAT) can provide qualitative images of biomedical soft tissue with high spatial resolution. However, whether it is…”
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k -space propagation models for acoustically heterogeneous media: Application to biomedical photoacoustics by Cox, B. T., Kara, S., Arridge, S. R., Beard, P. C.

“…Biomedical applications of photoacoustics, in particular photoacoustic tomography, require efficient models of photoacoustic propagation that can incorporate…”
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Detection and modeling of non-Gaussian apparent diffusion coefficient profiles in human brain data by Alexander, D.C., Barker, G.J., Arridge, S.R.

“…This work details the observation of non‐Gaussian apparent diffusion coefficient (ADC) profiles in multi‐direction, diffusion‐weighted MR data acquired with…”
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Optical tomographic reconstruction in a complex head model using a priori region boundary information by Schweiger, M, Arridge, S R

“…In this paper we investigate the application of anatomical prior information to image reconstruction in optical tomography. We propose a two-stage…”
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The finite element method for the propagation of light in scattering media: boundary and source conditions by Schweiger, M, Arridge, S R, Hiraoka, M, Delpy, D T

“…This paper extends our work on applying the Finite Element Method (FEM) to the propagation of light in tissue. We address herein the topics of boundary…”
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Three-dimensional whole-head optical tomography of passive motor evoked responses in the neonate by Gibson, A.P., Austin, T., Everdell, N.L., Schweiger, M., Arridge, S.R., Meek, J.H., Wyatt, J.S., Delpy, D.T., Hebden, J.C.

“…Optical tomography has been used to reconstruct three-dimensional images of the entire neonatal head during motor evoked responses. Data were successfully…”
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A finite element approach for modeling photon transport in tissue by Arridge, S R, Schweiger, M, Hiraoka, M, Delpy, D T

“…The use of optical radiation in medical physics is important in several fields for both treatment and diagnosis. In all cases an analytic and computable model…”
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Reconstructing absorption and diffusion shape profiles in optical tomography by a level set technique by Schweiger, M, Arridge, S R, Dorn, O, Zacharopoulos, A, Kolehmainen, V

“…A shape reconstruction algorithm for optical tomography is introduced that uses a level-set formulation for the shapes. Evolution laws based on gradient…”
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The theoretical basis for the determination of optical pathlengths in tissue: temporal and frequency analysis by Arridge, S R, Cope, M, Delpy, D T

“…A concise theoretical treatment is developed for the calculation of mean time, differential pathlength, phase shift, modulation depth and integrated intensity…”
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Recent advances in diffuse optical imaging by Gibson, A P, Hebden, J C, Arridge, S R

“…We review the current state-of-the-art of diffuse optical imaging, which is an emerging technique for functional imaging of biological tissue. It involves…”
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Three dimensional optical imaging of blood volume and oxygenation in the neonatal brain by Austin, T., Gibson, A.P., Branco, G., Yusof, R.Md, Arridge, S.R., Meek, J.H., Wyatt, J.S., Delpy, D.T., Hebden, J.C.

“…Optical methods provide a means of monitoring cerebral oxygenation in newborn infants at risk of brain injury. A 32-channel optical imaging system has been…”
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A Monte Carlo investigation of optical pathlength in inhomogeneous tissue and its application to near-infrared spectroscopy by Hiraoka, M, Firbank, M, Essenpreis, M, Cope, M, Arridge, S R, van der Zee, P, Delpy, D T

“…In order to quantify near-infrared spectroscopic (NIRS) data on an inhomogeneous medium, knowledge of the contribution of the various parts of the medium to…”
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Photon migration in non-scattering tissue and the effects on image reconstruction by Dehghani, H, Delpy, D T, Arridge, S R

“…Photon propagation in tissue can be calculated using the relationship described by the transport equation. For scattering tissue this relationship is often…”
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Enhanced diffuse optical tomographic reconstruction using concurrent ultrasound information by Di Sciacca, G, Di Sieno, L, Farina, A, Lanka, P, Venturini, E, Panizza, P, Dalla Mora, A, Pifferi, A, Taroni, P, Arridge, S R

“…Multimodal imaging is an active branch of research as it has the potential to improve common medical imaging techniques. Diffuse optical tomography (DOT) is an…”
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A method for generating patient-specific finite element meshes for head modelling by Gibson, A P, Riley, J, Schweiger, M, Hebden, J C, Arridge, S R, Delpy, D T

“…Finite element modelling of fields within the body, whether electrical or optical, requires knowledge of the geometry of the object being examined. It can be…”
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Quantification of spinal cord atrophy from magnetic resonance images via a B-spline active surface model by Coulon, O., Hickman, S.J., Parker, G.J., Barker, G.J., Miller, D.H., Arridge, S.R.

“…A method is presented that aims at segmenting and measuring the surface of the spinal cord from MR images in order to detect and quantify atrophy. A…”
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Finite element approximation of the radiative transport equation in a medium with piece-wise constant refractive index by Lehtikangas, O., Tarvainen, T., Kim, A.D., Arridge, S.R.

“…The radiative transport equation can be used as a light transport model in a medium with scattering particles, such as biological tissues. In the radiative…”
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3D optical tomography in the presence of void regions by Riley, J, Dehghani, H, Schweiger, M, Arridge, S, Ripoll, J, Nieto-Vesperinas, M

“…We present an investigation of the effect of a 3D non-scattering gap region on image reconstruction in diffuse optical tomography. The void gap is modelled by…”
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Rapid processing of PET list-mode data for efficient uncertainty estimation and data analysis by Markiewicz, P J, Thielemans, K, Schott, J M, Atkinson, D, Arridge, S R, Hutton, B F, Ourselin, S

“…In this technical note we propose a rapid and scalable software solution for the processing of PET list-mode data, which allows the efficient integration of…”
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Heterodyne frequency-domain multispectral diffuse optical tomography of breast cancer in the parallel-plane transmission geometry by Ban, H. Y., Schweiger, M., Kavuri, V. C., Cochran, J. M., Xie, L., Busch, D. R., Katrašnik, J., Pathak, S., Chung, S. H., Lee, K., Choe, R., Czerniecki, B. J., Arridge, S. R., Yodh, A. G.

“…Purpose: The authors introduce a state-of-the-art all-optical clinical diffuse optical tomography (DOT) imaging instrument which collects spatially dense,…”
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