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

Comparing different ultrasound imaging methods for breast cancer detection by Ozmen, Neslihan, Dapp, Robin, Zapf, Michael, Gemmeke, Hartmut, Ruiter, Nicole V., van Dongen, Koen W. A.

“…Ultrasound is frequently used to evaluate suspicious masses in breasts. These evaluations could be improved by taking advantage of advanced imaging algorithms,…”
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Redatuming of 2-D Wave Fields Measured on an Arbitrary-Shaped Closed Aperture by Taskin, Ulas, van der Neut, Joost, Gemmeke, Hartmut, van Dongen, Koen W. A.

“…Whole-breast ultrasound scanning systems are used to screen a women's breast for suspicious lesions. Typically, the transducers are located at fixed positions…”
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A forward model and conjugate gradient inversion technique for low-frequency ultrasonic imaging by VAN DONGEN, Koen W. A, WRIGHT, William M. D

“…Emerging methods of hyperthermia cancer treatment require noninvasive temperature monitoring, and ultrasonic techniques show promise in this regard. Various…”
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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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Ultrasonic Synthetic-Aperture Interface Imaging by van der Neut, Joost, Fokkema, Jacob T., van den Berg, Peter M., Zapf, Michael, Ruiter, Nicole V., Taskin, Ulas, van Dongen, Koen W. A.

“…Synthetic-aperture (SA) imaging is a popular method to visualize the reflectivity of an object from ultrasonic reflections. The method yields an image of the…”
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Extension of Marcatili's Analytical Approach for Rectangular Silicon Optical Waveguides by Westerveld, Wouter J., Leinders, Suzanne M., van Dongen, Koen W. A., Urbach, H. Paul, Yousefi, Mirvais

“…Marcatili's famous approximate analytical description of light propagating through rectangular dielectric waveguides, published in 1969, gives accurate results…”
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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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A full vectorial contrast source inversion scheme for three-dimensional acoustic imaging of both compressibility and density profiles by VAN DONGEN, Koen W. A, WRIGHT, William M. D

“…Imaging the two acoustic medium parameters density and compressibility requires the use of both the acoustic pressure and velocity wave fields, described via…”
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A novel ultrasound technique for detection of osteochondral defects in the ankle joint: a parametric and feasibility study by Sarkalkan, Nazli, Loeve, Arjo J, van Dongen, Koen W A, Tuijthof, Gabrielle J M, Zadpoor, Amir A

“…(Osteo)chondral defects (OCDs) in the ankle are currently diagnosed with modalities that are not convenient to use in long-term follow-ups. Ultrasound (US)…”
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Seismic and medical ultrasound imaging of velocity and density variations by nonlinear vectorial inverse scattering by Jakobsen, Morten, Xiang, Kui, van Dongen, Koen W. A.

“…We present an iterative nonlinear inverse scattering algorithm for high-resolution acoustic imaging of density and velocity variations. To solve the…”
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Multi-parameter inversion with the aid of particle velocity field reconstruction by Taskin, Ulas, van Dongen, Koen W. A.

“…Multi-parameter inversion for medical ultrasound leads to an improved tissue classification. In general, simultaneous reconstruction of volume density of mass…”
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Ultrasound transmission tomography image reconstruction with a fully convolutional neural network by Zhao, Wenzhao, Wang, Hongjian, Gemmeke, Hartmut, van Dongen, Koen W A, Hopp, Torsten, Hesser, Jürgen

“…Image reconstruction of ultrasound computed tomography based on the wave equation is able to show much more structural details than simpler ray-based image…”
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Simulation-to-real generalization for deep-learning-based refraction-corrected ultrasound tomography image reconstruction by Zhao, Wenzhao, Fan, Yuling, Wang, Hongjian, Gemmeke, Hartmut, van Dongen, Koen W A, Hopp, Torsten, Hesser, Jürgen

“… The image reconstruction of ultrasound computed tomography is computationally expensive with conventional iterative methods. The fully learned direct deep…”
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Sparsity constrained contrast source inversion by Ramirez, Ana B., van Dongen, Koen W. A.

“…Ultrasound imaging is used for detecting and characterizing breast lesions. A state of the art imaging method is the contrast source inversion (CSI), which…”
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Wavefield finite time focusing with reduced spatial exposure by Meles, Giovanni Angelo, van der Neut, Joost, van Dongen, Koen W. A., Wapenaar, Kees

“…Wavefield focusing is often achieved by time-reversal mirrors, where wavefields emitted by a source located at the focal point are evaluated at a closed…”
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A feasibility study for non-invasive thermometry using non-linear ultrasound by van Dongen, Koen W A, Verweij, Martin D

“…High intensity focused ultrasound (HIFU) is used during hyperthermia cancer treatment to increase the tumour temperature. For an adequate and safe application…”
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Modeling acoustic waves in locally enhanced meshes with a staggered-grid finite difference approach by Sanes Negrete, Sergio, Muñoz-Cuartas, Juan C., Vera-Ciro, Carlos A., van Dongen, Koen W.A.

“…Finite difference is a well-suited technique for modeling acoustic wave propagation in heterogeneous media as well as for imaging and inversion. Typically, the…”
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Computation of nonlinear ultrasound fields using a linearized contrast source method by Verweij, Martin D, Demi, Libertario, van Dongen, Koen W A

“…Nonlinear ultrasound is important in medical diagnostics because imaging of the higher harmonics improves resolution and reduces scattering artifacts. Second…”
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A Broadband Polyvinylidene Difluoride-Based Hydrophone with Integrated Readout Circuit for Intravascular Photoacoustic Imaging by Daeichin, Verya, Chen, Chao, Ding, Qing, Wu, Min, Beurskens, Robert, Springeling, Geert, Noothout, Emile, Verweij, Martin D, van Dongen, Koen W.A, Bosch, Johan G, van der Steen, Antonius F.W, de Jong, Nico, Pertijs, Michiel, van Soest, Gijs

“…Abstract Intravascular photoacoustic (IVPA) imaging can visualize the coronary atherosclerotic plaque composition on the basis of the optical absorption…”
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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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