Dr. Ivana Jovanović Balic Profile

Dr. Ivana Jovanović Balic

at Sonoview Acoustic Sensing Technologies

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Publications (12)

Proceedings Article | 6 March 2018 Paper

Optimized transducer configuration for ultrasound waveform tomography in breast cancer detection

Nicolas Vinard, Naiara Korta Martiartu, Christian Boehm, Ivana Jovanović Balic, Andreas Fichtner

Proceedings Volume 10580, 105800I (2018) https://doi.org/10.1117/12.2293600

KEYWORDS: Transducers, Data modeling, Breast, Tomography, Inverse problems, Ultrasonography, Quality measurement, Tissues, Computer simulations, Breast cancer

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Waveform inversion is a promising method for ultrasound computed tomography able to produce high-resolution images of human breast tissue. However, the computational complexity of waveform inversion remains a considerable challenge, and the costs per iteration are proportional to the number of emitting transducers. We propose a twofold strategy to accelerate the time-to-solution by identifying the optimal number and location of emitters using sequential optimal experimental design (SOED). SOED is a powerful tool to iteratively add the most informative transducer or remove redundant measurements, respectively. This approach simultaneously provides optimized transducer configurations and a cost-benefit curve that quantifies the information gain versus the computational cost.

First, we propose a method to identify the emitters that provide reconstructions with minimal expected uncertainties. Using a Bayesian approach, model uncertainties and resolution can be quantified with the trace of the posterior covariance. By linearizing the wave equation, we can compute the posterior covariance using the inverse of the Gauss-Newton approximation of the Hessian. Furthermore, this posterior is independent of the breast model and the experimental data, thus enabling pre-acquisition experimental optimization. Then, for the post-acquisition inversion, we present an approach to select a subsample of sources that accurately approximates the full gradient direction in each iteration. We control the convergence of the angular differences between consecutive gradient directions by randomly adding new emitters into the subsample.

We present synthetic studies in 2D and 3D that consider a ring-shaped and a semi-ellipsoidal scanning device, respectively. Numerical results suggest that the provided methods have the potential to identify redundancies from the corresponding cost-benefit curves. Furthermore, the gradient direction rapidly converges to the direction of the full gradient, which appears to be independent of the model and the emitter locations.

Proceedings Article | 6 March 2018 Paper

Time-domain spectral-element ultrasound waveform tomography using a stochastic quasi-Newton method

Christian Boehm, Naiara Korta Martiartu, Nicolas Vinard, Ivana Jovanović Balic, Andreas Fichtner

Proceedings Volume 10580, 105800H (2018) https://doi.org/10.1117/12.2293299

KEYWORDS: Transducers, 3D modeling, Data modeling, Ultrasonography, Stochastic processes, Acoustics, Computer simulations, Breast, Wave propagation, Instrument modeling

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Proceedings Article | 13 March 2017 Paper

Optimal experimental design to position transducers in ultrasound breast imaging

Naiara Korta Martiartu, Christian Boehm, Nicolas Vinard, Ivana Jovanović Balic, Andreas Fichtner

Proceedings Volume 10139, 101390M (2017) https://doi.org/10.1117/12.2252514

KEYWORDS: Ultrasound tomography, Transducers, Breast imaging, Image resolution, Breast cancer, Acoustics, Inverse problems, Quality measurement, Breast, Tomography, Tissues, 3D modeling, Data modeling

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Proceedings Article | 20 March 2014 Paper

Breast boundary detection with active contours

I. Balic, P. Goyal, O. Roy, N. Duric

Proceedings Volume 9040, 90400D (2014) https://doi.org/10.1117/12.2043414

KEYWORDS: Breast, Signal attenuation, Image segmentation, Chest, Ultrasound tomography, Ultrasonography, Transducers, Nipple, 3D image processing, Optimization (mathematics)

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Proceedings Article | 29 March 2013 Open Access

Breast imaging with the SoftVue imaging system: first results

Neb Duric, Peter Littrup, Steven Schmidt, Cuiping Li, Olivier Roy, Lisa Bey-Knight, Roman Janer, Dave Kunz, Xiaoyang Chen, Jeffrey Goll, Andrea Wallen, Fouzaan Zafar, Veerendra Allada, Erik West, Ivana Jovanovic, Kuo Li, William Greenway

Proceedings Volume 8675, 86750K (2013) https://doi.org/10.1117/12.2002513

KEYWORDS: Breast, Prototyping, Imaging systems, Cancer, Tissues, Ultrasonography, Mammography, Breast cancer, Breast imaging, Signal attenuation

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Proceedings Article | 4 March 2013 Paper

Application of a new sensing principle for photoacoustic imaging of point absorbers

Zafer Doğan, Ivana Jovanovic, Thierry Blu, Dimitri Van De Ville

Proceedings Volume 8581, 85813Z (2013) https://doi.org/10.1117/12.2005063

KEYWORDS: Sensors, Absorption, Electroluminescent displays, Acquisition tracking and pointing, Reconstruction algorithms, Acoustics, Signal to noise ratio, Tissue optics, Spherical lenses, Photoacoustic imaging

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Proceedings Article | 27 September 2011 Paper

Use of learned dictionaries in tomographic reconstruction

Vincent Etter, Ivana Jovanovic, Martin Vetterli

Proceedings Volume 8138, 81381C (2011) https://doi.org/10.1117/12.894776

KEYWORDS: Associative arrays, Chemical species, Tomography, Image processing, Reconstruction algorithms, Inverse problems, Principal component analysis, Ultrasound tomography, Signal processing, Data modeling

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Proceedings Article | 27 September 2011 Paper

Localization of point sources for systems governed by the wave equation

Zafer Dogan, Vagia Tsiminaki, Ivana Jovanovic, Thierry Blu, Dimitri Van De Ville

Proceedings Volume 8138, 81380P (2011) https://doi.org/10.1117/12.894645

KEYWORDS: Acoustics, Source localization, Denoising, Signal to noise ratio, Sensing systems, Reconstruction algorithms, Statistical modeling, Electroencephalography, Nonlinear filtering, Spherical lenses

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Proceedings Article | 25 March 2011 Paper

Robust array calibration using time delays with application to ultrasound tomography

O. Roy, I. Jovanović, N. Durić, L. Poulo, M. Vetterli

Proceedings Volume 7968, 796806 (2011) https://doi.org/10.1117/12.877459

KEYWORDS: Transducers, Calibration, Denoising, Signal to noise ratio, Ultrasonography, Error analysis, Breast cancer, Ultrasound tomography, Tomography, Time metrology

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Proceedings Article | 12 March 2010 Paper

Robust ultrasound travel-time tomography using the bent ray model

Ali Hormati, Ivana Jovanović, Olivier Roy, Martin Vetterli

Proceedings Volume 7629, 76290I (2010) https://doi.org/10.1117/12.844693

KEYWORDS: Inverse problems, Breast, Ultrasonography, Reconstruction algorithms, Tomography, Data modeling, Acoustics, Receivers, Scanners, Wavelets

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Proceedings Article | 12 March 2010 Paper

Sound speed estimation using wave-based ultrasound tomography: theory and GPU implementation

O. Roy, I. Jovanović, A. Hormati, R. Parhizkar, M. Vetterli

Proceedings Volume 7629, 76290J (2010) https://doi.org/10.1117/12.844691

KEYWORDS: Wave propagation, Ultrasound tomography, Reconstruction algorithms, Computer simulations, Ultrasonography, Transducers, Finite difference methods, Scanners, Breast cancer, Breast

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Proceedings Article | 13 March 2009 Paper

Temperature monitoring during tissue freezing using ultrasound speed measurements

I. Jovanovic, A. Hormati, P. Littrup, N. Duric, O. Rama, M. Vetterli

Proceedings Volume 7265, 72650Q (2009) https://doi.org/10.1117/12.813682

KEYWORDS: Tissues, Reconstruction algorithms, Temperature metrology, Breast, Ultrasonography, Therapeutics, Wavelets, Tomography, Ultrasound tomography, Signal attenuation

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Showing 5 of 12 publications

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