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First Steps Toward Ultrasound-Based Motion Compensation for Imaging and Therapy: Calibration with an Optical System and 4D PET Imaging
2015
Frontiers in Oncology
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The goal of this project is to develop an US-based motion tracking for real-time motion correction in radiation therapy and diagnostic imaging, notably in 4D positron emission tomography (PET). ...
The accuracy and precision of all the steps in the calibration workflow for US tracking-based 4D PET imaging are found to be in an acceptable range for clinical implementation. ...
Conditional density propagation ("Condensation") is then employed to track this contour. ...
doi:10.3389/fonc.2015.00258
pmid:26649277
pmcid:PMC4663279
fatcat:4zzlrynajvdb7bsaucfl6xaugq
Automatic alignment of standard views in 3D echocardiograms using real-time tracking
2009
Medical Imaging 2009: Ultrasonic Imaging and Signal Processing
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The modality is unique in that it allows for real-time imaging of the heart, using portable equipment. ...
Availability of methods for analysis of 3D ultrasound in real-time could open up possibilities for very quick and simple measurement of cardiac function, potentially conducted during image acquisition. ...
and Technology (NTNU) for access to the datasets used. ...
doi:10.1117/12.805380
fatcat:yyzsi6dvsrhclhmqjo5axjigqi
Anniversary Paper: Evolution of ultrasound physics and the role of medical physicists and the AAPM and its journal in that evolution
2009
Medical Physics (Lancaster)
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A brief review of medical ultrasound imaging and therapy is presented, with an emphasis on the contributions of medical physicists, the American Association of Physicists in Medicine ͑AAPM͒ and its publications ...
Ultrasound has been the greatest imaging modality worldwide for many years by equipment purchase value and by number of machines and examinations. ...
an external tracking device, e.g., articulated arms, 251 infrared tracking, 252 camera-based optical tracking with 3D ultrasound imaging, and real-time ultrasound monitoring. 253 A specialty 3D ultrasound ...
doi:10.1118/1.2992048
pmid:19291980
fatcat:yekhbnqtpnf3nnlm66zf5gwcmy
Ion beam tracking using ultrasound motion detection
2014
Medical Physics (Lancaster)
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The tracking algorithm uses active contours and conditional density propagation 6 as well as the different intensity values of the US images to calculate the actual target contour. ...
The tracking software analyzes the US stream (3-4 ms/slice) and calculates the position of manually pre-defined contours, i.e., structures such as the diaphragm, organ borders, vessels, or in our case ...
doi:10.1118/1.4868459
pmid:24694128
fatcat:nq5gccooazhsfapokay5vqz2qq
3D Ultrasound image segmentation: A Survey
[article]
2016
arXiv
pre-print
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Three-dimensional Ultrasound image segmentation methods are surveyed in this paper. ...
The evaluation methods and comparison between them are presented and tabulated in terms of evaluation techniques, interactivity, and robustness. ...
which are used by surgeons in real-time planning. ...
arXiv:1611.09811v1
fatcat:gwpegdj7ifhztidyksxy7e6h2q
MRI-Guided High-Intensity Focused Ultrasound Sonication of Liver and Kidney
[chapter]
2011
Medical Radiology
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2020 pre-print arXiv:2011.10752v1 fatcat:wtqzkcvuj5a67mulmjf7i7gvva
Temperature mapping of mobile organs as kidney and liver is challenging, as well as real-time processing methods for feedback control of the HIFU procedure. ...
High Intensity Focused Ultrasound (HIFU) can be used to achieve a local temperature increase deep inside the human body in a non-invasive way. ...
Recherche (project MRgHIFU-ALKT), Fondation InNaBioSanté (project ULTRAFITT), Center for Translational Molecular Medicine (project VOLTA), Ligue Nationale Contre le Cancer, Conseil Régional d'Aquitaine and ...
doi:10.1007/174_2011_394
fatcat:r2ktxkenxnht7cpqip2p5rz2du
Ultrasound-Based Guidance and Therapy
[chapter]
2013
Advancements and Breakthroughs in Ultrasound Imaging
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In the case of high-intensity focused ultrasound (HIFU or FUS) or radiotherapy, the organ can be imaged using 4D ultrasound (3D + time or real-time 3D) in order to monitor the temporal changes in anatomy ...
and corresponding real-time intraoperative ultrasound images [114] . ...
doi:10.5772/55884
fatcat:aorojsswjrgdjhpayfebhbnmsi
Study on viscosity induced contrast in ultrasound color flow imaging of carotid atherosclerosis
2021
International Journal of Power Electronics and Drive Systems (IJPEDS)
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ultrasound imaging. ...
The simulated ultrasound images have been compared with CFD simulation images and identified a good match between them. ...
Field II program has been chosen here because of its perfect modelling of arbitrary probes, beamforming, wave propagation and interactions, and its capability for simulating real like ultrasound images ...
doi:10.11591/ijece.v11i5.pp4059-4068
fatcat:pvo4fhzctvf3tk6w22pdzdjsl4
A level set approach for shape-driven segmentation and tracking of the left ventricle
2003
IEEE Transactions on Medical Imaging
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In order to improve performance the problems of segmentation and tracking of the structure of interest are dealt with simultaneously by introducing the notion of time in the process and looking for a solution ...
Promising experimental results in MR and ultrasonic cardiac images demonstrate the potentials of our approach. ...
The geodesic active contour [1] , [6] can be used for example to perform boundary extraction. ...
doi:10.1109/tmi.2003.814785
pmid:12872953
fatcat:g7ojphe6vbd5rpfd5ctmgfhipi
Ultrasound image segmentation: a survey
2006
IEEE Transactions on Medical Imaging
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This paper reviews ultrasound segmentation methods, in a broad sense, focusing on techniques developed for medical -mode ultrasound images. ...
Then, we present a classification of methodology in terms of use of prior information. ...
copies of their papers which are discussed in the review or permission to use figures from their papers. ...
doi:10.1109/tmi.2006.877092
pmid:16894993
fatcat:wtt6igy2ozhjtbnsizi6qtosn4
A coupled deformable model for tracking myocardial borders from real-time echocardiography using an incompressibility constraint
2010
Medical Image Analysis
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Real-time three-dimensional (RT3D) echocardiography is a new image acquisition technique that allows instantaneous acquisition of volumetric images for quantitative assessment of cardiac morphology and ...
We employ two surfaces, each driven by the image-derived information that takes into account ultrasound physics by modeling the speckle statistics using the Nakagami distribution while maintaining the ...
It presents an alternative coupled deformable model for tracking and segmentation of left ventricular (LV) myocardial borders from real-time 3-D (RT3D) echocardiographic images. ...
doi:10.1016/j.media.2010.02.005
pmid:20350833
pmcid:PMC4318707
fatcat:suzcz4lgpnblpei2m4tpt7vlku
A Pipeline for the Generation of Realistic 3D Synthetic Echocardiographic Sequences: Methodology and Open-Access Database
2015
IEEE Transactions on Medical Imaging
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The simulated images show typical artifacts that make motion tracking in ultrasound challenging. ...
State-of-the art solutions in the fields of electromechanical modeling and ultrasound simulation are combined within an original framework that exploits a real ultrasound recording to learn and simulate ...
contours, and hence the overall tracking accuracy, for those tracking techniques making use of a segmentation step [77] . ...
doi:10.1109/tmi.2015.2396632
pmid:25643402
fatcat:qobpqrkmljatdpy6khuyw3bbva
Imaging the electromechanical activity of the heart in vivo
2011
Proceedings of the National Academy of Sciences of the United States of America
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EWI can map the electromechanical activity in all four heart chambers at a very high temporal resolution (approximately 2 ms), noninvasively and with real-time feedback. ...
Strain mapping methods based on MR imaging (MRI) in humans are not real time, and their frame rates are typically smaller than in echocardiography, although temporal resolution on the order of 15-20 ms ...
Shunichi Homma for his guidance in the echocardiography scanning efforts. This study was supported in part by the National Institutes of Health (R01EB006042, R21HL096094) and Wallace H. ...
doi:10.1073/pnas.1011688108
pmid:21571641
pmcid:PMC3102378
fatcat:tnszv6oqt5gd7efz5zhsyqmh24
Speeding-up image registration for repetitive motion scenarios
2012
2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)
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We propose a novel approach for real-time image registration for image sequences of organs subject to repetitive movement, such as breathing. ...
The proposed algorithm is real-time (9 ms per frame) and the prediction error is on average 1.2 mm for both MRI and ultrasound. ...
A 2D real-time US tracking method based on active contours and conditional density propagation was proposed in [9] and evaluated on a short sequence. ...
doi:10.1109/isbi.2012.6235817
dblp:conf/isbi/LucaTS12
fatcat:ffnsdhfoprczbcwekejsebjv5y
Artificial Intelligence in Quantitative Ultrasound Imaging: A Review
[article]
2020
arXiv
pre-print
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In recent years, there has been an increasing interest in artificial intelligence (AI) applications in ultrasound imaging. However, no research has been found that surveyed the AI use in QUS. ...
Quantitative ultrasound (QUS) imaging is a reliable, fast and inexpensive technique to extract physically descriptive parameters for assessing pathologies. ...
Finally, an active contour model was used to refine the tumor boundary. ...
arXiv:2003.11658v1
fatcat:iujuh7gra5ax7od2gxoo6yrbpe
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