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Svetoslav Nikolov

Position - Company  
Associate Professor - Technical University of Denmark

1. Research in medical imaging
1.1. Synthetic Aperture Imaging
1.2. Flow Estimation
1.3. Modeling tissue properties

2. Hardware development
2.1. New ultrasound scanner - 64 boards, 5 Virtex-4 FPGAS per board, 1024 A/D and D/A converters
2.2. Parametric beamformer
2.3. Implementation of flow estimation

3. Teaching
3.1. Digital electronics
3.2. Signal processing (4 courses)
3.3. Programming

* Member of the web committee of IEEE UFFC
* Reviewer for Ultrasonics
* Reviewer for Transaction of IEEE UFFC
* Censor/opponent for Ph.D. defenses
* Member of technology transfer committee

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Feb 2005 - Aug 2009
Assistant Professor - Technical University of Denmark

Research in the field of biomedical imaging.
Teaching: programming, digital electronics and real-time signal processing.

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Feb 2002 - Jan 2005
Research Assistant Professor - Technical University of Denmark

Post-doc position.

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Sep 2001 - Jan 2002
Research Assistant - Technical University of Denmark Jun 1998 - Aug 1998
Software Developer - Proxima 3 Ltd.

In charge of the development of an operating system for a microcontroller.

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Sep 1997 - May 1998
Software Developer - IrVin Ltd.

Software developer - databases. Product used at ABB and Roche.

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Oct 1995 - Aug 1996
System Engineer, R&D Technologies and Applications - B-K Medical

Initiate, coordinate and implement feasibility studies.
Identify and introduce new key technologies in cooperation with academic and industry partners.
Look for potential industry and academic collaborations.
Invent new imaging and signal processing algorithms.
Advise PhD, MSc, and BSc students.
Design new system architectures.
Specify and design new products.

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Aug 2008 - Present
Degree - University  
Ph.D., Biomedical Engineering - Technical University of Denmark

The research resulted in two patents in the field of Synthetic Aperture Ultrasound Imaging. Published on average 3 papers per year.

Key developer of an ultrasound scanner for research purposes.

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1998 - 2001
M.B.A, International Business Relations - Technical University - Sofia 1993 - 1997
M.Sc., Telecommunications - Tehnièeski universitet Sofija 1991 - 1996
Publication Info
3D synthetic aperture imaging using a virtual source element in the elevation plane S.I. Nikolov, J.A. Jensen 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121). 2:1743-1747. January 1, 2012.
A method for real-time three-dimensional vector velocity imaging Jørgen A. Jensen, Svetoslav I. Nikolov IEEE Symposium on Ultrasonics, 2003. 1582-1585. January 1, 2012.
A novel velocity estimator using multiple frequency carriers Zhuo Zhang, A. Jakobsson, S Nikolov, J A Chambers Proceedings of SPIE. 5373:281-289. January 1, 2012.
A simple method to reduce aliasing artifacts in color flow mode imaging J Udesen, S Nikolov, J A Jensen Proc. IEEE Ultrason. Symp.. 1352-1356. January 1, 2012.
Apparatus and method for velocity estimation in synthetic aperture imaging J. A. Jensen, S. I. Nikolov . January 1, 2012.
Application of different spatial sampling patterns for sparse array transducer design Svetoslav I. Nikolov, Jørgen A. Jensen Ultrasonics. 37(10):667-671. January 1, 2012.
Blood velocity estimation using spatio-temporal encoding based on a frequency division approach F. Gran, S.I. Nikolov, J.A. Jensen IEEE Ultrasonics Symposium, 2005.. 1344-1347. January 1, 2012.
Cardiac In-Vivo Measurements Using Synthetic Transmit Aperture Ultrasound H. Andresen, S.I. Nikolov, J. A. Jensen, C. Hassager, J. Kjaergaard 2006 IEEE Ultrasonics Symposium. 1115-1118. January 1, 2012.
CFU File Format S I Nikolov . January 1, 2012.
Comparing interpolation schemes in dynamic receive ultrasound beamforming J. Kortbek, H. Andresen, S. Nikolov, J.A. Jensen IEEE Ultrasonics Symposium, 2005.. 1972-1975. January 1, 2012.
Comparison between different encoding schemes for synthetic aperture imaging Svetoslav Nikolov, Jørgen A. Jensen Proceedings of SPIE. 3:1-12. January 1, 2012.
Description of the software library for the multi-channel sampling and processing system for ultrasound imaging J A Jensen, S Nikolov 81. January 1, 2012.
Effective and versatile software beamformation toolbox Jacob Kortbek, Svetoslav Nikolov, Jørgen Arendt Jensen Proceedings of SPIE. 651319-651319-10. January 1, 2012.
Equipment and methods for synthetic aperture anatomic and flow imaging (invited) J.A. Jensen, S.I. Nikolov, T. Misaridis, K.L. Gammelmark 2002 IEEE Ultrasonics Symposium, 2002. Proceedings.. 1555-1564. January 1, 2012.
Evaluation of automatic time gain compensated in-vivo ultrasound sequences Martin Christian Axelsen, Kristian Frostholm Røeboe, Martin Christian Hemmsen, Svetoslav Ivanov Nikolov, Mads Moller Pedersen, Michael Backmann Nielsen, Jørgen Arendt Jensen 2010 IEEE Ultrasonic Symposium, San Diego. (2). January 1, 2012.
Experimental ultrasound system for real-time synthetic imaging J.A. Jensen, O. Holm, L.J. Jensen, H. Bendsen, H.M. Pedersen, K. Salomonsen, J. Hansen, S. Nikolov 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027). 2:1595-1599. January 1, 2012.
Extending the unambiguous velocity range using multiple carrier frequencies Z. Zhang, A. Jakobsson, S. Nikolov, J.A. Chambers Electronics Letters. 41(22):1206. January 1, 2012.
Fast parametric beamformer for synthetic aperture imaging. Svetoslav Ivanov Nikolov, Jørgen Arendt Jensen, Borislav Gueorguiev Tomov IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 55(8):1755-67. January 1, 2012. View on PubMed.
Fast simulation of ultrasound images J A Jensen, S I Nikolov Proc. IEEE Ultrason. Symp.. 2:1721-1724. January 1, 2012.
Further development of synthetic aperture real-time 3D scanning with a rotating phased array S.I. Nikolov, B.G. Tomov, F. Gran, J.A. Jensen IEEE Symposium on Ultrasonics, 2003. 1899-1902. January 1, 2012.
Implementation of a versatile research data acquisition system using a commercially available medical ultrasound scanner Martin Christian Hemmsen, Svetoslav Ivanov Nikolov, Mads Møller Pedersen, Michael Johannes Pihl, Marie Sand Enevoldsen, Jens Munk Hansen, Jørgen Arendt Jensen IEEE Trans. Ultrason., Ferroelec., Freq. Contr.. 1-22 (Accepted). January 1, 2012.
Implementation of Synthetic Aperture Imaging in Medical Ultra- sound : The Dual Stage Beamformer Approach Jørgen Arendt Jensen, Jacob Kortbek, Svetoslav I Nikolov, Martin Hemmsen, Borislav Tomov European Conference on Synthetic Aperture Radar - 8th, 2010. (i). January 1, 2012.
In-vivo synthetic aperture flow imaging in medical ultrasound S.I. Nikolov, J.A. Jensen IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 50(7):848-856. January 1, 2012.
Investigation of the feasibility of 3D synthetic aperture imaging S.I. Nikolov, J.A. Jensen IEEE Symposium on Ultrasonics, 2003. 1903-1906. January 1, 2012.
K-space model of motion artifacts in synthetic transmit ultrasound imaging S.I. Nikolov, J.A. Jensen IEEE Symposium on Ultrasonics, 2003. 1824-1828. January 1, 2012.
Manipulation of grating lobes by changing element shape Svetoslav Ivanov Nikolov, Henrik Jensen IFMBE Proceedings, 15th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics. (4):37 - 40. January 1, 2012.
Method and apparatus for acquiring images by recursive ultrasound images, J A Jensen, S I Nikolov . January 1, 2012.
Parameter study of 3D synthetic aperture post-beamforming procedure. Svetoslav I Nikolov, Peter Santén, Ola Bjuvsten, Jørgen A Jensen Ultrasonics. 44 Suppl 1:e159-64. January 1, 2012. View on PubMed.
Parametric Beamformer for Synthetic Aperture Ultrasound Imaging J. A. Jensen, S. I. Nikolov, B. G. Tomov 2006 IEEE Ultrasonics Symposium. 2172-2176. January 1, 2012.
Performance of SARUS : A Synthetic Aperture Real-time Ultrasound System Jørgen Arendt Jensen, Hans Holten-lund, Ronnie Thorup Nielson, Borislav Georgiev Tomov, Matthias Bo Stuart, Svetoslav Ivanov Nikolov, Martin Hansen, Ulrik Darling Larsen 2010 IEEE International Ultrasonics Symposium (UIS), 2010, San Diego, California. 2-6. January 1, 2012.
Performance of the Transverse Oscillation Method using Beamformed Data from a Commercial Scanner M J Pihl, S I Nikolov, P Haugaard, M C Hemmsen, J A Jensen Proc. IEEE Ultrason. Symp.. Accepted. January 1, 2012.
Practical Applications of Synthetic Aperture Imaging Svetoslav Ivanov Nikolov, Jacob Kortbek, Jørgen Arendt Jensen 2010 IEEE International Ultrasonics Symposium (UIS), 2010, San Diego, California. . January 1, 2012.
Precise time-of-flight calculation for 3-D synthetic aperture focusing. Henrik Andresen, Svetoslav Ivanov Nikolov, Jørgen Arendt Jensen IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 56(9):1880-7. January 1, 2012. View on PubMed.
Precise Time-of-Flight Calculation For 3D Synthetic Aperture Focusing H. Andresen, S.I. Nikolov, J.A. Jensen 2007 IEEE Ultrasonics Symposium Proceedings. 224-227. January 1, 2012.
Precision of needle tip localization using a receiver in the needle Svetoslav Ivanov Nikolov, Jorgen Arendt Jensen 2008 IEEE Ultrasonics Symposium. 479-482. January 1, 2012.
Processing in {SARUS} S Nikolov, J A Jensen, B T Tomov . January 1, 2012.
Real time 3D visualization of ultrasonic data using a standard PC S Nikolov Ultrasonics. 41(6):421-426. January 1, 2012.
Real-time synthetic aperture imaging: opportunities and challanges (invited) S I Nikolov, J A Jensen, B G Tomov 40th Asilomar Conference on Signals, Systems and Computers. Accepted. January 1, 2012.
Recursive delay calculation unit for parametric beamformer Svetoslav I. Nikolov, Jørgen A. Jensen, Borislav G. Tomov Proceedings of SPIE. 6147:61470D-61470D-12. January 1, 2012.
Recursive delay calculation unit for parametric beamformer Svetoslav I. Nikolov, Jørgen A. Jensen, Borislav G. Tomov Proceedings of SPIE. 6147-13:61470D-61470D-12. January 1, 2012.
Recursive ultrasound imaging S. Nikolov, K. Gammelmark, J.A. Jensen 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027). 2:1621-1625. January 1, 2012.
Rocking convex array used for 3D synthetic aperture focusing Henrik Andresen, Svetoslav Ivanov Nikolov, Mads Moller Pedersen, Daniel Buckton, Jorgen Arendt Jensen 2008 IEEE Ultrasonics Symposium. 970-973. January 1, 2012.
Rocking Convex Array used for 3D Synthetic Aperture Focusing H Andresen, S I Nikolov, M M Pedersen, D Buckton, J A Jensen IEEE Trans. Ultrason., Ferroelec., Freq. Contr.. Accepted. January 1, 2012.
Scalable Intersample Interpolation Architecture for High-channel-count Beamformers Borislav Georgiev Tomov, Svetoslav Ivanov Nikolov, Jørgen Arendt Jensen IEEE International Ultrasonics Symposium (UIS), 2011, Orlando, Florida. 1-4 (Accepted). January 1, 2012.
Simulation of High Quality Ultrasound Imaging Martin Christian Hemmsen, Jacob Kortbek, Svetoslav Ivanov Nikolov, Jørgen Arendt Jensen 2010 IEEE Ultrasonic Symposium, San Diego. 2-5. January 1, 2012.
Synthetic Aperture imaging in medical ultrasound (invited) S I Nikolov, K L Gammelmark, M H Pedersen, B G Tomov, J A Jensen Ultrasound in Obstetrics and Gynecology. -. January 1, 2012.
Synthetic aperture tissue and flow ultrasound imaging S I Nikolov . January 1, 2012.
Synthetic aperture ultrasound imaging. Jørgen Arendt Jensen, Svetoslav Ivanov Nikolov, Kim Løkke Gammelmark, Morten Høgholm Pedersen Ultrasonics. 44 Suppl 1:e5-15. January 1, 2012. View on PubMed.
System Architecture of an Experimental Synthetic Aperture Real-Time Ultrasound System J. A. Jensen, M. Hansen, B. G. Tomov, S. I. Nikolov, H. Holten-Lund 2007 IEEE Ultrasonics Symposium Proceedings. 636-640. January 1, 2012.
System library user's guide S I Nikolov, J A Jensen . January 1, 2012.
Three-dimensional real-time synthetic aperture imaging using a rotating phased array transducer S.I. Nikolov, J.A. Jensen, R. Dufait, A. Schoisswohl 2002 IEEE Ultrasonics Symposium, 2002. Proceedings.. 1585-1588. January 1, 2012.
Transducers with non-rectangular elements Svetoslav Ivanov Nikolov, Henrik Jensen, Terry Kling IEEE International Ultrasonics Symposium (UIS), 2011, Orlando, Florida. 1-4 (Accepted). January 1, 2012.
Transverse flow imaging using synthetic aperture directional beamforming J.A. Jensen, S.I. Nikolov 2002 IEEE Ultrasonics Symposium, 2002. Proceedings.. 1523-1527. January 1, 2012.
Ultrasound image quality assessment: a framework for evaluation of clinical image quality Martin Christian Hemmsen, Mads Møller Petersen, Svetoslav Ivanov Nikolov, Michael Backmann Nielsen, Jørgen Arendt Jensen System. 76290C-76290C-12. January 1, 2012.
Ultrasound research scanner for real-time synthetic aperture data acquisition J.A. Jensen, O. Holm, L.J. Jerisen, H. Bendsen, S.I. Nikolov, B.G. Tomov, P. Munk and 6 others IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 52(5):881-891. January 1, 2012.
User guide for the blood flow estimation toolbox S. I. Nikolov . January 1, 2012.
Users guide for the Beamformation Toolbox S I Nikolov . January 1, 2012.
Velocity estimation using recursive ultrasound imaging and spatially encoded signals S. Nikolov, K. Gammelmark, J. Jensen 2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121). 2:1473-1477. January 1, 2012.
Velocity estimation using synthetic aperture imaging [blood flow] S.I. Nikolov, J.A. Jensen 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263). 1409-1412. January 1, 2012.
Virtual ultrasound sources in high-resolution ultrasound imaging Svetoslav I. Nikolov, Jørgen A. Jensen Proceedings of SPIE. 3:395-405. January 1, 2012.
{H-}PaGe - Home Page Generator S. I. Nikolov . January 1, 2012.
{RASMUS} software. Developer's guide S. I. Nikolov . January 1, 2012.
{SARUS} Digital Acquisition and Ultrasound Processing Board, Processing Specification H Holten-Lund, I Nikolov, M Hansen . January 1, 2012.
Directional synthetic aperture flow imaging J.A. Jensen, S.I. Nikolov IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 51(9):1107-1118. September 1, 2004.
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