Academic literature on the topic 'Cardiac elastography'
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Journal articles on the topic "Cardiac elastography"
DIOMIDOVA, V. N., L. N. VASILIEVA, O. V. VALEEVA, and O. V. PETROVA. "Possibilities of ultrasound elastography in assessing liver damage in chronic heart failure." Practical medicine 19, no. 5 (2021): 27–31. http://dx.doi.org/10.32000/2072-1757-2021-5-27-31.
Full textElgeti, Thomas, Jens Rump, Uwe Hamhaber, Sebastian Papazoglou, Bernd Hamm, Jürgen Braun, and Ingolf Sack. "Cardiac Magnetic Resonance Elastography." Investigative Radiology 43, no. 11 (November 2008): 762–72. http://dx.doi.org/10.1097/rli.0b013e3181822085.
Full textElgeti, Thomas, Mark Beling, Bernd Hamm, Jürgen Braun, and Ingolf Sack. "Cardiac Magnetic Resonance Elastography." Investigative Radiology 45, no. 12 (December 2010): 782–87. http://dx.doi.org/10.1097/rli.0b013e3181ec4b63.
Full textCaenen, Annette, Mathieu Pernot, Kathryn R. Nightingale, Jens-Uwe Voigt, Hendrik J. Vos, Patrick Segers, and Jan D’hooge. "Assessing cardiac stiffness using ultrasound shear wave elastography." Physics in Medicine & Biology 67, no. 2 (January 17, 2022): 02TR01. http://dx.doi.org/10.1088/1361-6560/ac404d.
Full textChang, Ian C. Y., Arvin Arani, Shivaram Poigai Arunachalam, Martha Grogan, Angela Dispenzieri, and Philip A. Araoz. "Feasibility study of cardiac magnetic resonance elastography in cardiac amyloidosis." Amyloid 24, sup1 (March 16, 2017): 161. http://dx.doi.org/10.1080/13506129.2017.1278689.
Full textKumarasinghe, G., P. Macdonald, and M. Danta. "Liver Elastography in Cardiac Disease (LECD) Trial." Heart, Lung and Circulation 20 (January 2011): S70—S71. http://dx.doi.org/10.1016/j.hlc.2011.05.176.
Full textSandrikov, V. A., E. R. Charchyan, A. V. Lysenko, T. Yu Kulagina, A. N. Dzeranova, A. V. Novikova, S. V. Fedulova, and S. O. Popov. "The first experience of intraoperative myocardial elastography in cardiac surgery patients." Medical alphabet, no. 22 (December 4, 2024): 14–18. https://doi.org/10.33667/2078-5631-2024-22-14-18.
Full textVasilyeva, Lidiya N., Alla G. Ksenofontova, and Svetlana V. Bayukova. "CARDIOHEPATIC SYNDROME: INNOVATIVE DIAGNOSTICS BY ULTRASOUND ELASTOGRAPHY." Acta medica Eurasica, no. 1 (March 31, 2022): 9–18. http://dx.doi.org/10.47026/2413-4864-2022-1-9-18.
Full textVarghese, Tomy, J. A. Zagzebski, P. Rahko, and C. S. Breburda. "Ultrasonic Imaging of Myocardial Strain Using Cardiac Elastography." Ultrasonic Imaging 25, no. 1 (January 2003): 1–16. http://dx.doi.org/10.1177/016173460302500101.
Full textChen, Hao, and Tomy Varghese. "Three-dimensional canine heart model for cardiac elastography." Medical Physics 37, no. 11 (October 20, 2010): 5876–86. http://dx.doi.org/10.1118/1.3496326.
Full textDissertations / Theses on the topic "Cardiac elastography"
Kwiecinski, Wojciech. "Ultrasound cardiac therapy guided by elastography and ultrafast imaging." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066131/document.
Full textAtrial fibrillation (AF) affects 2-3% of the European and North-American population, whereas ventricular tachyarrhythmia (VT) is related to an important risk of sudden death. AF and VT originate from dysfunctional electrical activity in cardiac tissues. Minimally-invasive approaches such as Radio-Frequency Catheter Ablation (RFCA) have revolutionized the treatment of these diseases; however the success rate of RFCA is currently limited by the lack of monitoring techniques to precisely control the extent of thermally ablated tissue.The aim of this thesis is to propose novel ultrasound-based approaches for minimally invasive cardiac ablation under guidance of ultrasound imaging. For this, first, we validated the accuracy and clinical viability of Shear-Wave Elastography (SWE) as a real-time quantitative imaging modality for thermal ablation monitoring in vivo. Second we implemented SWE on an intracardiac transducer and validated the feasibility of evaluating thermal ablation in vitro and in vivo on beating hearts of a large animal model. Third, a dual-mode intracardiac transducer was developed to perform both ultrasound therapy and imaging with the same elements, on the same device. SWE-controlled High-Intensity-Focused-Ultrasound thermal lesions were successfully performed in vivo in the atria and the ventricles of a large animal model. At last, SWE was implemented on a transesophageal ultrasound imaging and therapy device and the feasibility of transesophageal approach was demonstrated in vitro and in vivo. These novel approaches may lead to new clinical devices for a safer and controlled treatment of a wide variety of cardiac arrhythmias and diseases
Caforio, Federica. "Mathematical modelling and numerical simulation of elastic wave propagation in soft tissues with application to cardiac elastography." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX001/document.
Full textThis PhD thesis concerns the mathematical modelling and numerical simulation of impulsive Acoustic Radiation Force (ARF)-driven Shear Wave Elastography (SWE) imaging in a prestressed soft tissue, with a specific reference to the cardiac setting. The first part of the manuscript deals with the mathematical modelling of the ARF, the resulting shear wave propagation, and the characterisation of the shear wave velocity in a general constitutive law for the myocardial tissue. We also show some applications to the extraction of fibre orientation in the myocardium and the detection of “synthetic pathologies”. One of the main contributions of this work is the derivation of an original mathematical model of the ARF. In more detail, starting from an accurate biomechanical model of the heart, and based on asymptotic analysis, we infer the governing equation of the pressure and the shear wave field remotely induced by the ARF, and we compute an analytical expression of the source term responsible for the generation of shear waves from an acoustic pressure pulse. In the second part of the PhD thesis, we propose efficient numerical tools for a realistic numerical simulation of an SWE experiment in a nearly-incompressible, pre-stressed, fibered soft tissue. The spatial discretisation is based on high-order Spectral Finite Elements (HO-SEM). Concerning the time discretisation, we propose a novel method adapted to incompressible elasticity. In particular, only the terms travelling at infinite velocity, associated with the incompressibility constraint, are treated implicitly by solving a scalar Poisson problem at each time step of the algorithm. Furthermore, we provide a novel matrix-free, high-order, fast method to solve the Poisson problem, based on the use of the Discrete Fourier Transform
Saloux, Éric. "Validatiοn préclinique et clinique d’une nοuvelle technique nοn invasive de mesure de l’élasticité du myοcarde." Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC415.
Full textUltrasonic elastography is a validated technique used for almost 10 years to evaluate the stiffness of superficial static organs such as the liver and the breast. Its application to the study of the mechanical characteristics of the heart is very recent, and has been the subject of only a few experimental proof of concept studies in animals and humans. In this work, we evaluated Shear Wave Elastography imaging in a version adapted to the heart from clinical sequences designed for static organs, successively in vitro, in an animal model and in humans with aortic stenosis,. In the phantom study, we showed that measurements with cardiac sequences and linear probes were consistent with reference sequences, whereas measurements with the sectorial probe were only interpretable between 4 and 10 cm, and presented a homogeneous measurement field. In the animal model, we showed that systolic stiffness was affected by loading conditions and correlated with contractility, while diastolic stiffness was independent of loading conditions, contractility short ischemia and heart rate, with good intra- and inter-animal agreement. In humans, we confirmed the dynamic nature of myocardial stiffness with a systole/diastole ratio of 3.5, showed that diastolic myocardial stiffness was significantly higher in aortic stenosis and significantly correlated with left ventricular remodeling, severity of aortic obstruction and ventricular preload. These promising results demonstrate the potential clinical benefit of this modality if widely implemented on commercial systems
Maksuti, Elira. "Imaging and modeling the cardiovascular system." Doctoral thesis, KTH, Medicinsk bildteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-196538.
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Correia, Mafalda Filipa Rodrigues. "From 2D to 3D cardiovascular ultrafast ultrasound imaging : new insights in shear wave elastography and blood flow imaging." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC158.
Full textThis thesis was focused on the development of novel cardiovascular imaging applications based on 2-D and 3-D ultrafast ultrasound imaging. More specifically, new technical and clinical developments of myocardial shear wave elastography and ultrafast blood flow imaging are presented in this manuscript.At first, myocardial shear wave elastography was developed for transthoracic imaging and improved by a non-linear imaging approach to non-invasively and locally assess shear wave velocity measurements, and consequently tissue stiffness in the context of cardiac imaging. This novel imaging approach (Ultrafast Harmonic Coherent Compounding) was tested and validated in-vitro and the in vivo feasibility was performed in humans for biomechanical evaluation of the cardiac muscle wall, the myocardium. Then, we have translated shear wave elastography to the clinical practice within two clinical trials, each one with a different population (adults and children). In both clinical trials, we have studied the capability of shear wave elastography to assess quantitatively myocardial stiffness in healthy volunteers and in patients suffering from hypertrophic cardiomyopathy. The results in the adult population indicated that shear wave elastography may become an effective imaging tool to assess cardiac muscle stiffness in clinical practice and help the characterization of hypertrophic cardiomyopathy. Likewise, we have also translated Shear Wave Elastography into four-dimensions and we have developed a new approach to map tissue elastic anisotropy in 3-D. 3-D Elastic Tensor Imaging allowed us to estimate quantitatively in a single acquisition the elastic properties of fibrous tissues. This technique was tested and validated in vitro in transverse isotropic models. The in-vivo feasibility of 3D elastic tensor imaging was also assessed in a human skeletal muscle.In parallel, we have developed a novel imaging technique for the non-invasive and non-radiative imaging of coronary circulation using ultrafast Doppler. This approach allowed us to image blood flow of the coronary circulation with high sensitivity. A new adaptive filter based on the singular value decomposition was used to remove the clutter signal of moving tissues. Open-chest swine experiments allowed to evaluate and validate this technique and results have shown that intramural coronary circulation, with diameters up to 100 µm, could be assessed. The in-vivo transthoracic feasibility was also demonstrated in humans in pediatric cardiology.Finally, we have developed a novel imaging modality to map quantitatively the blood flow in 3-D: 3-D ultrafast ultrasound flow imaging. We demonstrated that 3-D ultrafast ultrasound flow imaging can assess non-invasively, user-independently and directly volumetric flow rates in large arteries within a single heartbeat. We have evaluated and validated our technique in vitro in arterial phantoms using a 2-D matrix-array probe and a customized, programmable research 3-D ultrafast ultrasound system, and the in-vivo feasibility was demonstrated in human carotid arteries
Robert, Jade. "Développement de modalités d'imagerie ultrasonore pour le guidage et le suivi interventionnel du traitement des arythmies cardiaques." Electronic Thesis or Diss., Lyon, 2022. http://www.theses.fr/2022LYSE1005.
Full textCardiac arrhythmias remain a major public health issue today. Some types of arrhythmias affect tens of millions of people worldwide, while others are the main cause of sudden cardiac death. In the most severe cases, it is imperative perform a treatment in order to preserve the integrity of the patient. However, interventional methods for guiding and monitoring this treatment are limited, sometimes leading to high recurrence rates, depending on the type of arrhythmia. This thesis focuses on the development of ultrafast ultrasound imaging modalities that can overcome these limitations. These modalities are Electromechanical Wave Imaging and Passive Elastography, and could provide relevant information, until now unavailable in clinic. First, ex-vivo studies on isolated working hearts were conducted to evaluate the potential of Electromechanical Wave Imaging. A blind study demonstrated that it was possible to accurately detect the type of stimulation and the source of contraction in 79% of cases. Then, two in-vivo studies, conducted on porcine model, allowed to study the feasibility of the electromechanical wave imaging on two types of probes, more adapted to an interventional context. Waves that could be associated with cardiac contraction were visualized in both studies. Nevertheless, dynamic visualization of the contraction wave was more complex in an in-vivo context, as it requires subjective interpretation of a trained reader. To address this limitation, a novel method based on time-frequency analysis of ultrasound data was developed to provide a more objective representation of the cardiac contraction, without the need of a trained reader. The method was validated, qualitatively and quantitatively, on ex-vivo data, against the reference method used for Electromechanical Wave Imaging in the literature. By applying the method to the data from the in-vivo studies, it could be demonstrated that the described contraction patterns are similar between two consecutive stimulations with same conditions, and that the contraction source is correctly positioned when the stimulation probe is located in the plane. Notably, the observed contraction area was consistent with the pacing area, when located in the imaging plane, in 81% of the cases, during the study performed with an intracardiac probe. Ex-vivo studies on cardiac samples were performed to evaluate the feasibility of detecting single lesions and thermal injury patterns by Passive Elastography. It was demonstrated on a large number of samples (41 out of n = 51, 80% on two studies) that a local stiffness increase (by a factor of 1.6 to 2.5 on average), of the injured areas, was visible by elastography. The distributions of the detected lesions were consistent, and the dimensions correctly estimated (manually, 1.1 to 2.8 mm error on average), although the lesion areas detected by passive elastography were still approximate. Finally, an in-vivo study on a porcine model demonstrated the feasibility of detecting individual or in-line thermal lesions with this method
Sayseng, Vincent Policina. "Toward clinical realization of Myocardial Elastography: Cardiac strain imaging for better diagnosis and treatment of heart disease." Thesis, 2020. https://doi.org/10.7916/d8-c6vn-cv86.
Full textBunting, Ethan Armel. "Performance Analysis and Optimization of 2-D Cardiac Strain Imaging for Clinical Applications." Thesis, 2017. https://doi.org/10.7916/D8BP07J3.
Full textBooks on the topic "Cardiac elastography"
Sayseng, Vincent Policina. Toward clinical realization of Myocardial Elastography: Cardiac strain imaging for better diagnosis and treatment of heart disease. [New York, N.Y.?]: [publisher not identified], 2020.
Find full textBook chapters on the topic "Cardiac elastography"
Konofagou, Elisa. "Myocardial Elastography." In Cardiac Mapping, 1073–82. Chichester, UK: John Wiley & Sons, Ltd, 2019. http://dx.doi.org/10.1002/9781119152637.ch84.
Full textKolipaka, Arunark. "Cardiac Magnetic Resonance Elastography." In Protocols and Methodologies in Basic Science and Clinical Cardiac MRI, 237–59. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53001-7_7.
Full textIbrahim, El-Sayed, Simon Lambert, and Ralph Sinkus. "Cardiac Magnetic Resonance Elastography (MRE)." In Heart Mechanics Magnetic Resonance Imaging, 449–500. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315119090-9.
Full textHeyde, Brecht, Oana Mirea, and Jan D'hooge. "Cardiac Strain and Strain Rate Imaging." In Ultrasound Elastography for Biomedical Applications and Medicine, 143–60. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119021520.ch11.
Full textEyerly-Webb, Stephanie A., Maryam Vejdani-Jahromi, Vaibhav Kakkad, Peter Hollender, David Bradway, and Gregg Trahey. "Acoustic Radiation Force-based Ultrasound Elastography for Cardiac Imaging Applications." In Ultrasound Elastography for Biomedical Applications and Medicine, 504–19. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119021520.ch32.
Full textLesniak-Plewinska, Beata, M. Kowalski, S. Cygan, E. Kowalik, and K. Kaluzynski. "Experimental setup with dual chamber cardiac phantom for ultrasonic elastography." In IFMBE Proceedings, 559–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89208-3_133.
Full textVarghese, Tomy, Q. Chen, P. Rahko, and James Zagzebski. "Cardiac Elastography, Full-Field Development." In Encyclopedia of Biomaterials and Biomedical Engineering, Second Edition - Four Volume Set, 506–13. CRC Press, 2008. http://dx.doi.org/10.1201/b18990-49.
Full text"Cardiac Elastography, Full-Field Development." In Encyclopedia of Biomaterials and Biomedical Engineering, Second Edition, 506–13. CRC Press, 2008. http://dx.doi.org/10.1081/e-ebbe2-120023467.
Full textLi, Yan, Karen L. Fang, Zhi Huang, Yun Lu, Bin Zhang, and Yali Yao. "Advancements in Cardiovascular Diagnostics." In Coronary and Cardiothoracic Critical Care, 1–19. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8185-7.ch001.
Full textLi, Yan, Karen L. Fang, Zhi Huang, Yun Lu, Bin Zhang, and Yali Yao. "Advancements in Cardiovascular Diagnostics." In Emerging Applications, Perspectives, and Discoveries in Cardiovascular Research, 194–211. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-2092-4.ch011.
Full textConference papers on the topic "Cardiac elastography"
Konofagou, Elisa E., Timothy Harrigan, and Scott Solomon. "Cardiac elastography: detecting pathological changes in myocardium tissues." In Medical Imaging 2003, edited by William F. Walker and Michael F. Insana. SPIE, 2003. http://dx.doi.org/10.1117/12.479932.
Full textLiu, Chih-Hao, Manmohan Singh, Shang Wang, John P. Leach, Irina V. Larina, James F. Martin, Kirill V. Larin, and Justin Rippy. "Assessment of the biomechanical changes in cardiac tissue after myocardial infarction with optical coherence elastography." In Optical Elastography and Tissue Biomechanics VI, edited by Kirill V. Larin and Giuliano Scarcelli. SPIE, 2019. http://dx.doi.org/10.1117/12.2510762.
Full textBunting, Ethan, Clement Papadacci, Elaine Wan, Julien Grondin, and Elisa Konofagou. "Intracardiac myocardial elastography for lesion quantification in cardiac radiofrequency ablation." In 2016 IEEE International Ultrasonics Symposium (IUS). IEEE, 2016. http://dx.doi.org/10.1109/ultsym.2016.7728575.
Full textAzeloglu, E. U., and K. D. Costa. "Dynamic AFM elastography reveals phase dependent mechanical heterogeneity of beating cardiac myocytes." In 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2009. http://dx.doi.org/10.1109/iembs.2009.5335316.
Full textAl Mukaddim, Rashid, Kayvan Samimi, Allison Rodgers, Timothy A. Hacker, and Tomy Varghese. "Comparison of cardiac displacements in a murine model of myocardial ischemia using Cardiac Elastography and speckle tracking echocardiography." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092143.
Full textMukaddim, Rashid Al, Kayvan Samimi, Allison Rodgers, Timothy A. Hacker, and Tomy Varghese. "Comparison of cardiac displacements in a murine model of myocardial ischemia using cardiac elastography and Speckle Tracking Echocardiography." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092281.
Full textCaenen, Annette, Abdullah Thabit, Darya Shcherbakova, Abigail Swillens, Patrick Segers, Mathieu Pernot, and Luc Mertens. "The effect of stretching on transmural shear wave anisotropy in cardiac shear wave elastography." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092507.
Full textCaenen, Annette, Mathieu Pemot, Mathias Peirlinck, Luc Mertens, and Patrick Segers. "Analyzing the Shear Wave Mechanics in Cardiac Shear Wave Elastography Using Finite Element Simulations." In 2018 IEEE International Ultrasonics Symposium (IUS). IEEE, 2018. http://dx.doi.org/10.1109/ultsym.2018.8579698.
Full textLiang, Yun, Hui Zhu, Thomas Gehrig, and Morton H. Friedman. "Coronary Artery Wall Strain Estimation From Clinical IVUS Images." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176256.
Full textEngel, Aaron J., Hao H. Hsu, Pengfei Song, and Gregory R. Bashford. "Cardiac atrial kick shear wave elastography with ultrafast diverging wave imaging: An in vivo pilot study." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8092742.
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