Search Results - "van Dongen, K. W. A."

A contrast source method for nonlinear acoustic wave fields in media with spatially inhomogeneous attenuation by Demi, L., Dongen, K. W. A. van, Verweij, M. D.

“…Experimental data reveals that attenuation is an important phenomenon in medical ultrasound. Attenuation is particularly important for medical applications…”
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Reconstructing 3D proton dose distribution using ionoacoustics by van Dongen, K W A, de Blécourt, A J, Lens, E, Schaart, D R, Vos, F M

“…In proton therapy high energy protons are used to irradiate a tumor. Ideally, the delivered proton dose distribution is measured during treatment to ensure…”
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3-D induction log modelling with integral equation method and domain decomposition pre-conditioning by Saputera, D H, Jakobsen, M, van Dongen, K W A, Jahani, N, Eikrem, K S, Alyaev, S

“…SUMMARY The deployment of electromagnetic (EM) induction tools while drilling is one of the standard routines for assisting the geosteering decision-making…”
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An ultrasound cylindrical phased array for deep heating in the breast: theoretical design using heterogeneous models by Bakker, J F, Paulides, M M, Obdeijn, I M, van Rhoon, G C, van Dongen, K W A

“…The objective of this theoretical study is to design an ultrasound (US) cylindrical phased array that can be used for hyperthermia (40-44 degrees C) treatment…”
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Perfectly matched layers for frequency-domain integral equation acoustic scattering problems by Alles, E J, van Dongen, K W A

“…Simulations of acoustic wavefields in inhomogeneous media are always performed on finite numerical domains. If contrasts actually extend over the domain…”
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Rapid Transient Pressure Field Computations in the Nearfield of Circular Transducers Using Frequency-Domain Time-Space Decomposition by Alles, E. J., Zhu, Y., van Dongen, K. W. A., McGough, R. J.

“…The fast nearfield method, when combined with time-space decomposition, is a rapid and accurate approach for calculating transient nearfield pressures…”
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Extension of Marcatili's analytical approach for rectangular silicon optical waveguides by Westerveld, W. J, Leinders, S. M, van Dongen, K. W. A, Urbach, H. P, Yousefi, M

“…Journal of Lightwave Technology 30, 2388 (2012) Marcatili's famous approximate analytical description of light propagating through rectangular dielectric…”
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Mesenteric SParIng versus extensive mesentereCtomY in primary ileocolic resection for ileocaecal Crohn's disease (SPICY): study protocol for randomized controlled trial by van der Does de Willebois, E M L

“…There is emerging evidence to suggest that Crohn's disease (CD) may be a disease of the mesentery, rather than of the bowel alone. A more extensive mesenteric…”
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Parallel transmit beamforming using orthogonal frequency division multiplexing applied to harmonic Imaging-A feasibility study by Demi, L., Verweij, M. D., Van Dongen, K. W. A.

“…Real-time 2-D or 3-D ultrasound imaging systems are currently used for medical diagnosis. To achieve the required data acquisition rate, these systems rely on…”
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Modeling nonlinear acoustic waves in media with inhomogeneities in the coefficient of nonlinearity by Demi, L., Verweij, M. D., van Dongen, K. W. A.

“…The refraction and scattering of nonlinear acoustic waves play an important role in the realistic application of medical ultrasound. One cause of these effects…”
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Modeling nonlinear acoustic waves in media with inhomogeneities in the coefficient of nonlinearity by Demi, L., Verweij, M. D., van Dongen, K. W. A.

“…The refraction and scattering of nonlinear acoustic waves play an important role in the realistic application of medical ultrasound. One cause of these effects…”
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Iterative reconstruction of the transducer surface velocity by Alles, E. J., van Dongen, K. W. A.

“…Ultrasound arrays used for medical imaging consist of many elements placed closely together. Ideally, each element vibrates independently. However, because of…”
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Time Versus Frequency Domain full Waveform Inversion for Ultrasound Imaging by Ramirez, Ana B., Abreo, Sergio A., Van Dongen, K.W.A.

“…With full waveform inversion (FWI) all available information enclosed in the recorded wavefield - including multiple scattering, dispersion, and diffraction -…”
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Joint Inversion of Acoustic and Electromagnetic Wave fields by Scherders, Eva M. L., Verschuur, D.J., van Dongen, K.W.A.

“…Imaging by inversion of acoustic or electromagnetic wave fields have applications in a wide variety of areas, such as non-destructive testing, biomedical…”
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Modelling the Iono-Acoustic Wave Field for Proton Beam Range Verification by van Dongen, K.W.A., de Blecourt, A.J., Lens, E., Schaart, D.R., Vos, F.M.

“…In proton therapy, cancer patients are irradiated with high energy protons. For a successful treatment it is important that the location with the highest…”
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Iterative inverse extrapolation for transducer characterization by Alles, E. J., Verweij, M. D., van Dongen, K. W. A.

“…Minimising cross-talk in medical ultrasound transducer arrays requires accurate knowledge of the transducer surface vibration. Direct measurement of this…”
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Modeling acoustic wave field propagation in 3D breast models by Ozmen-Eryilmaz, N., Demi, L., Alles, E. J., Verweij, M. D., van Dongen, K. W. A.

“…Ultrasound is a women friendly breast cancer examination method. To facilitate the design of new imaging modalities and imaging algorithms, software is…”
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Frequency domain Time-Space Decomposition for efficient near field pressure computations by Alles, E. J., van Dongen, K. W. A., McGough, R. J.

“…Time-Space Decomposition is one of the most efficient transient near-field pressure simulation schemes available for piston transducers, but suffers from two…”
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Parallel transmit beamforming using orthogonal frequency division multiplexing for harmonic imaging by Demi, L., Verweij, M. D., van Dongen, K. W. A.

“…Nowadays real-time volumetric ultrasound imaging systems are used for medical diagnosis. To achieve the required data acquisition rate, the system relies on…”
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First measurements on a novel type of optical micro-machined ultrasound transducer (OMUT) by Leinders, S. M., van Dongen, K. W. A., de Jong, N., Verweij, M. D., Westerveld, W. J., Urbach, H. P., van Neer, P. L. M. J., Pozo, J.

“…Several types of ultrasound sensors have been developed and are used in the field of medical imaging. Conventional transducers are made of piezo-electric…”
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