Search Results - "Nikolov, S.I."

Ultrasound research scanner for real-time synthetic aperture data acquisition by Jensen, J.A., Holm, O., Jerisen, L.J., Bendsen, H., Nikolov, S.I., Tomov, B.G., Munk, P., Hansen, M., Salomonsen, K., Hansen, J., Gormsen, K., Pedersen, H.M., Gammelmark, K.L.

“…Conventional ultrasound systems acquire ultrasound data sequentially one image line at a time. The architecture of these systems is therefore also sequential…”
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In-vivo synthetic aperture flow imaging in medical ultrasound by Nikolov, S.I., Jensen, J.A.

“…A new method for acquiring flow images using synthetic aperture techniques in medical ultrasound is presented. The new approach makes it possible to have a…”
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Directional synthetic aperture flow imaging by Jensen, A.J., Nikolov, S.I.

“…A method for flow estimation using synthetic aperture imaging and focusing along the flow direction is presented. The method can find the correct velocity…”
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Fast parametric beamformer for synthetic aperture imaging by Nikolov, S.I., Jensen, J.A., Tomov, B.G.

“…This paper describes the design and implementation of a real-time delay-and-sum synthetic aperture beamformer. The beamforming delays and apodization…”
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Precise time-of-flight calculation for 3-D synthetic aperture focusing by Andresen, H., Nikolov, S.I., Jensen, J.A.

“…Conventional linear arrays can be used for 3-D ultrasound imaging by moving the array in the elevation direction and stacking the planes in a volume. The…”
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Investigation of the feasibility of 3D synthetic aperture imaging by Nikolov, S.I., Jensen, J.A.

“…This paper investigates the feasibility of implementing real-time synthetic aperture 3D imaging on the experimental system developed at the Center for fast…”
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Real-time synthetic aperture imaging: opportunities and challenges by Nikolov, S.I., Tomov, B.G., Jensen, J.A.

“…Synthetic aperture (SA) ultrasound imaging has not been introduced in commercial scanners mainly due to the computational cost associated with the hardware…”
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4B-4 Precise Time-of-Flight Calculation For 3D Synthetic Aperture Focusing by Andresen, H., Nikolov, S.I., Jensen, J.A.

“…Conventional linear arrays can be used for 3D ultrasound imaging, by moving the array in the elevation direction and stacking the planes in a volume. The point…”
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P3H-3 Parametric Beamformer for Synthetic Aperture Ultrasound Imaging by Nikolov, S.I., Tomov, B.G., Jensen, J.A.

“…In this paper a parametric beamformer, which can handle all imaging modalities including synthetic aperture imaging, is presented. The image lines and…”
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Precision of needle tip localization using a receiver in the needle by Nikolov, S.I., Jensen, J.A.

“…Many medical procedures require the detection, tracking and guidance of (biopsy) needles. The detection of the position of the needle can be challenging…”
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8A-3 System Architecture of an Experimental Synthetic Aperture Real-Time Ultrasound System by Jensen, J.A., Hansen, M., Tomov, B.G., Nikolov, S.I., Holten-Lund, H.

“…Synthetic aperture (SA) ultrasound imaging has many advantages in terms of flexibility and accuracy. One of the major drawbacks is, however, that no system…”
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Rocking convex array used for 3D synthetic aperture focusing by Andresen, H., Nikolov, S.I., Pedersen, M.M., Buckton, D., Jensen, J.A.

“…Volumetric imaging can be performed using 1D arrays in combination with mechanical motion. Outside the elevation focus of the array, the resolution and…”
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Transverse flow imaging using synthetic aperture directional beamforming by Jensen, J.A., Nikolov, S.I.

“…Current ultrasound scanners only determine the velocity along the ultrasound beam, since data is only focused along the emitted beam. Synthetic aperture…”
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3D synthetic aperture imaging using a virtual source element in the elevation plane by Nikolov, S.I., Jensen, J.A.

“…The conventional scanning techniques are not directly extendable for 3D real-time imaging because of the time necessary to acquire one volume. Using a linear…”
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Velocity estimation using synthetic aperture imaging [blood flow] by Nikolov, S.I., Jensen, J.A.

“…Presented an approach for synthetic aperture blood flow ultrasound imaging. Estimates with a low bias and standard deviation can be obtained with as few as…”
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K-space model of motion artifacts in synthetic transmit ultrasound imaging by Nikolov, S.I., Jensen, J.A.

“…Synthetic transmit aperture (STA) imaging gives the possibility to acquire an image with only few emissions and is appealing for 3D ultrasound imaging. Even…”
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Blood velocity estimation using spatio-temporal encoding based on a frequency division approach by Gran, F., Nikolov, S.I., Jensen, J.A.

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Three-dimensional real-time synthetic aperture imaging using a rotating phased array transducer by Nikolov, S.I., Jensen, J.A., Dufait, R., Schoisswohl, A.

“…Current 3D real-time imaging is done either with sparse 2D arrays, or with mechanically moved phased arrays. The former results in a poor resolution and…”
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Equipment and methods for synthetic aperture anatomic and flow imaging by Jensen, J.A., Nikolov, S.I., Misaridis, T., Gammelmark, K.L.

“…Conventional ultrasound imaging is done by sequentially probing in each image direction. The frame rate is, thus, limited by the speed of sound and the number…”
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Further development of synthetic aperture real-time 3D scanning with a rotating phased array by Nikolov, S.I., Tomov, B.G., Gran, F., Jensen, J.A.

“…In a precious paper we have presented an approach combing synthetic transmit aperture imaging with a rotating phased array. The method is implemented on a…”
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