Imaging results of multi-modal ultrasound computerized tomography system designed for breast diagnosis

Opieliński, Krzysztof J.; Pruchnicki, Piotr; Gudra, Tadeusz; Podgórski, Przemysław; Kurcz, Jacek; Kraśnicki, Tomasz; Sąsiadek, Marek; Majewski, Jaroslaw

doi:10.1016/j.compmedimag.2015.02.004

Cited by 33 publications

(28 citation statements)

References 12 publications

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“…To discretize the time interval [0, T ], we utilize ∆t spaced regular grid of N time points and the standard difference approximations for the time derivative which substituted into equations (18) and (19) lead to the the following system q (k)…”

Section: ∂ ∂Tmentioning

confidence: 99%

“…Waveform (radar) imaging is rapidly becoming a standard approach in several fields of science and technology for the constantly increasing computational resources available for an ordinary user. For example, ultrasonic/microwave detection of breast lesions has recently been approaching the reliability of the classical computed X-ray tomography (CT) and magnetic resonance imaging (MRI) [7], [18].…”

Section: Introductionmentioning

confidence: 99%

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Multigrid-Based Inversion for Volumetric Radar Imaging With Asteroid Interior Reconstruction as a Potential Application

Takala

Pursiainen

2018

IEEE Trans. Comput. Imaging

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This study concentrates on advancing mathematical and computational methodology for radar tomography imaging in which the unknown volumetric velocity distribution of a wave within a bounded domain is to be reconstructed. Our goal is to enable effective simulation and inversion of a large amount of full-wave data within a realistic 2D or 3D geometry. For propagating and inverting the wave, we present a rigorous multigrid-based forward approach which utilizes the finitedifference time-domain method and a nested finite element grid structure. We also introduce and validate a multigrid-based inversion algorithm which allows regularization of the unknown distribution through a coarseto-fine inversion scheme. Using this approach, sparse signals can be effectively inverted, as the coarse fluctuations are reconstructed before the finer ones. Furthermore, the number of nonzero entries in the system matrix can be compressed and, thus, the inversion procedure can be speeded up. As the test scenario, we investigate satellite-based asteroid interior reconstruction. We use both full-wave and projected wave data and estimate the accuracy of the inversion under different error sources: noise and positioning inaccuracies. The results suggest that the present inversion technique allows recovering the interior with a single satellite recording backscattering data. Robust results can be achieved, when the peak-to-peak signal-to-noise ratio is above 10 dB. Furthermore, the robustness for the deep interior part can be enhanced if two satellites can be utilized in the measurements.

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Section: ∂ ∂Tmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multigrid-Based Inversion for Volumetric Radar Imaging With Asteroid Interior Reconstruction as a Potential Application

Takala

Pursiainen

2018

IEEE Trans. Comput. Imaging

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“…With the development of multimodality ultrasound imaging technology, the diagnostic ability of ultrasound is also increasing. [44] However, ultrasound examination can still only poorly reveal tumors in isolated locations; therefore, tumor real-time puncture guidance, real-time monitoring of tumor ablation therapy, and other applications are limited. Ultrasound-CT/MRI fusion imaging brings a new entry point for puncture guidance and ablation monitoring of tumors, which are difficult to be visualize in single ultrasound examination.…”

Section: Ultrasound-computed Tomography/magnetic Resonance Imaging Fumentioning

confidence: 99%

Application of Multimodality Imaging Fusion Technology in Diagnosis and Treatment of Malignant Tumors under the Precision Medicine Plan

Wang

Chen

et al. 2016

Chinese Medical Journal

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Objective:The arrival of precision medicine plan brings new opportunities and challenges for patients undergoing precision diagnosis and treatment of malignant tumors. With the development of medical imaging, information on different modality imaging can be integrated and comprehensively analyzed by imaging fusion system. This review aimed to update the application of multimodality imaging fusion technology in the precise diagnosis and treatment of malignant tumors under the precision medicine plan. We introduced several multimodality imaging fusion technologies and their application to the diagnosis and treatment of malignant tumors in clinical practice.Date Sources:The data cited in this review were obtained mainly from the PubMed database from 1996 to 2016, using the keywords of “precision medicine”, “fusion imaging”, “multimodality”, and “tumor diagnosis and treatment”.Study Selection:Original articles, clinical practice, reviews, and other relevant literatures published in English were reviewed. Papers focusing on precision medicine, fusion imaging, multimodality, and tumor diagnosis and treatment were selected. Duplicated papers were excluded.Results:Multimodality imaging fusion technology plays an important role in tumor diagnosis and treatment under the precision medicine plan, such as accurate location, qualitative diagnosis, tumor staging, treatment plan design, and real-time intraoperative monitoring. Multimodality imaging fusion systems could provide more imaging information of tumors from different dimensions and angles, thereby offing strong technical support for the implementation of precision oncology.Conclusion:Under the precision medicine plan, personalized treatment of tumors is a distinct possibility. We believe that multimodality imaging fusion technology will find an increasingly wide application in clinical practice.

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“…An M/UCT breast scan ( Figure 1) can be performed by utilizing a 2D sensor ring [4], [8], [26] which records data slices sharing the direction of the plane normal with the ring. MCT and UCT have recently been shown to have the potential to detect and classify breast lesionsat least as reliably as other imaging methods, such as computed X-ray tomography (CT) and magnetic resonance imaging (MRI) [8], [27], [28]. Other recently studied methods for breast cancer diagnosis include, e.g., optical tomography [29], [30].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hardware-Computed Travel Time on Localization Accuracy in the Inversion of Experimental (Acoustic) Waveform Data

Takala

Hämäläinen

Pursiainen

2017

IEEE Trans. Comput. Imaging

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Abstract-This study aims to advance hardware-level computations for travel-time tomography applications in which the wavelength is close to the diameter of the information that has to be recovered. Such can be the case, for example, in the imaging applications of (1) biomedical physics, (2) astro-geophysics and (3) civil engineering. Our aim is to shed light on the effect of that preprocessing the digital waveform signal has on the inversion results and to find computational solutions that guarantee robust inversion when there are incomplete and/or noisy measurements. We describe a hardware-level implementation for integrated and thresholded travel-time computation (ITT and TTT). We compare the ITT and TTT approaches in inversion analysis with experimental acoustic travel-time data recorded using a ring geometry for the transmission and measurement points. The results obtained suggest that ITT is essential for maintaining the robustness of the inversion with imperfect signal digitization and sparsity. In order to ensure the relevance of the results, the specifications of the test setup were related to those of applications (1)-(3).

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Imaging results of multi-modal ultrasound computerized tomography system designed for breast diagnosis

Cited by 33 publications

References 12 publications

Multigrid-Based Inversion for Volumetric Radar Imaging With Asteroid Interior Reconstruction as a Potential Application

Multigrid-Based Inversion for Volumetric Radar Imaging With Asteroid Interior Reconstruction as a Potential Application

Application of Multimodality Imaging Fusion Technology in Diagnosis and Treatment of Malignant Tumors under the Precision Medicine Plan

The Effect of Hardware-Computed Travel Time on Localization Accuracy in the Inversion of Experimental (Acoustic) Waveform Data

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