scholarly journals A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

2015 ◽  
Vol 156 (43) ◽  
pp. 1723-1740 ◽  
Author(s):  
Attila Nemes ◽  
Tamás Forster
Keyword(s):  
Left Ventricle ◽  
Clinical Relevance ◽  
Speckle Tracking ◽  
Three Dimensional ◽  
Vital Role ◽  
The Body ◽  
Present Review ◽  
Non Invasive

The left ventricle has a vital role in maintaining circulation of the body, therefore, its non-invasive assessment is essential. The aim of the present review is to demonstrate clinical relevance of different echocardiographic methods in the evaluation of left ventricle emphasizing the importance of the most recent three-dimensional (and) speckle-tracking methodologies. Orv. Hetil., 2015, 156(43), 1723–1740.

Three-dimensional speckle-tracking echocardiography – a further step in the non-invasive three-dimensional cardiac imaging

2012 ◽  
Vol 153 (40) ◽  
pp. 1570-1577 ◽  
Author(s):  
Attila Nemes ◽  
Anita Kalapos ◽  
Péter Domsik ◽  
Tamás Forster
Keyword(s):  
Cardiac Imaging ◽  
Speckle Tracking ◽  
Speckle Tracking Echocardiography ◽  
Three Dimensional ◽  
Myocardial Mechanics ◽  
Non Invasive ◽  
Imaging Methodology ◽  
Invasive Evaluation

Three-dimensional speckle-tracking echocardiography is a new cardiac imaging methodology, which allows three-dimensional non-invasive evaluation of the myocardial mechanics. The aim of this review is to present this new tool emphasizing its diagnostic potentials and demonstrating its limitations, as well. Orv. Hetil., 2012, 153, 1570–1577.

Comparison of biplane manual, automated volumetric and MRI methods for assessment of left ventricle volumes and function in a series of three left ventricle non-compaction patients

2021 ◽  
Author(s):  
Katarzyna Justyna Pigon ◽  
Edyta Radzik ◽  
Krystyna Krzemień-Wolska ◽  
Brygida Przywara-Chowaniec ◽  
Ewa Nowalany-Kozielska ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Speckle Tracking ◽  
Three Dimensional ◽  
Golden Rule ◽  
Ventricular Myocardium ◽  
Two Dimensional ◽  
Prognostic Information ◽  
Dimensional Echocardiography ◽  
Three Dimensional Echocardiography ◽  
And Function

Abstract Background Non-compaction of the ventricular myocardium (LVNC) is a rare genetically determined heart defect. The disease is most frequently detected during accidental echocardiography. There is no golden rule examination for LVNC diagnosis. In our study, we aimed to compare the measurements of the left ventricle volumes and function obtained with the two-dimensional, and three-dimensional echo based on the results from MR imaging in a series of three left ventricle non-compaction cardiomyopathy patients. Case presentation Patients’ age was 43–53 years. Two patients presented with congestive heart failure, third patient presented with ventricular arrhythmia. The proportion of thickness of non-compacted to compacted layers ranged from 2.3 to 3.6. Three-dimensional echo has revealed substantially higher end-diastolic and end-systolic volumes in comparison to two-dimensional echo, yet not as high as assessed in magnetic resonance imaging. Speckle tracking revealed reduced global longitudinal, radial, and circumferential strain, even in the patients with normal left ventricle function. Conclusion Real-time three-dimensional echocardiography with automated left ventricle analysis offers more information on the assessment of left ventricle in patients with left ventricle non-compaction in comparison to two-dimensional echocardiography. Speckle tracking analysis may add prognostic information in this specific group of patients.

3D Reconstruction of the Left Ventricle From Four Echocardiographic Projections

2014 ◽  
Author(s):  
Navaneetha Krishnan Rajan ◽  
Zeying Song ◽  
Kenneth R. Hoffmann ◽  
Marek Belohlavek ◽  
Eileen M. McMahon ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Three Dimensional ◽  
Image Data ◽  
Left Ventricular ◽  
The Body ◽  
Patient Specific ◽  
Immersed Boundary ◽  
Cross Sectional ◽  
Standard Format ◽  
Automated Method

The left ventricle (LV) of a human heart receives oxygenated blood from the lungs and pumps it throughout the body via the aortic valve. Characterizing the LV geometry, its motion, and the ventricular flow is critical in assessing the heart’s health. An automated method has been developed in this work to generate a three-dimensional (3D) model of the LV from multiple-axis echocardiography (echo). Image data from three long-axis sections and a basal section is processed to compute spatial nodes on the LV surface. The generated surfaces are output in a standard format such that it can be imported into the curvilinear-immersed boundary (CURVIB) framework for numerical simulation of the flow inside the LV. The 3D LV model can be used for better understanding of the ventricular motion and the simulation framework provides a powerful tool for studying left ventricular flows on a patient specific basis. Future work would incorporate data from additional cross-sectional images.

Early results of MitraClip system implantation by real-time three-dimensional speckle-tracking left ventricle analysis

2016 ◽  
Vol 17 (11) ◽  
pp. 843-849 ◽  
Author(s):  
Salvatore Scandura ◽  
Fabio Dipasqua ◽  
Giuseppe Gargiulo ◽  
Davide Capodanno ◽  
Anna Caggegi ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Real Time ◽  
Speckle Tracking ◽  
Three Dimensional ◽  
Early Results ◽  
Mitraclip System

scholarly journals Deep vascular imaging in the eye with flow-enhanced ultrasound

2021 ◽  
Author(s):  
Christian Damsgaard ◽  
Henrik Lauridsen
Keyword(s):  
Imaging Techniques ◽  
Three Dimensional ◽  
The Body ◽  
High Frequency Ultrasound ◽  
Spatiotemporal Resolution ◽  
Ultrasound Technique ◽  
Non Invasive ◽  
Nucleated Red Blood Cells ◽  
Invasive Method ◽  
Flow Enhancement

The eye's retina is one of the most energy-demanding tissues in the body and thus requires high rates of oxygen delivery from a rich blood supply. The capillary lamina of the choroid lines the outer surface of the retina and is the dominating source of oxygen in most vertebrates, but this vascular bed is challenging to image with traditional optical techniques due to its position behind the highly light-absorbing retina. Here we describe a high-frequency ultrasound technique with flow-enhancement to image deep vascular beds (0.5 - 3 cm) of the eye with a high spatiotemporal resolution. This non-invasive method works well in species with nucleated red blood cells (non-mammalian and fetal animal models), and it generates non-invasive three-dimensional angiographies without the use of contrast agents that is independent of blood flow angles and with a higher sensitivity than Doppler based ultrasound imaging techniques.

scholarly journals Comparative evaluation of speckle tracking echocardiography technologies in twodimensional and three-dimensional modes in patients with chronic heart failure with preserved and reduced systolic function of the left ventricle

2020 ◽  
pp. 64-71
Author(s):  
М.А. САИДОВА ◽  
В.Х. СОХИБНАЗАРОВА ◽  
А.А. АВАЛЯН ◽  
С.Н. ТЕРЕЩЕНКО
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Left Ventricle ◽  
Speckle Tracking ◽  
Speckle Tracking Echocardiography ◽  
Systolic Function ◽  
Three Dimensional ◽  
Diagnostic Significance ◽  
Reduced Ejection Fraction ◽  
Deformation Properties

Резюме В исследование включены 70 больных с хронической сердечной недостаточностью (ХСН) с сохранной и сниженной фракцией выброса (ФВ) левого желудочка (ЛЖ). Всем больным проводили стандартную трансторакальную эхокардиографию (ЭхоКГ) с тканевой миокарди3 альной допплерографией. Для оценки деформационных свойств миокарда ЛЖ применяли технологию спекл3трекинг ЭхоКГ в двухмер3 ном и трехмерном режимах. Сравнительный анализ показал, что параметры деформации миокарда ЛЖ у больных ХСН как с сохранной, так и со сниженной ФВ ЛЖ в трехмерном режиме спекл3трекинг ЭхоКГ были ниже, чем в двухмерном. Два метода тесно коррелировали между собой при расчете показателей деформационных свойств как продольных, так и циркулярных волокон миокарда ЛЖ. ROC3анализ показал диагностическую значимость параметра площади деформации у больных ХСН как с сохранной, так и со сниженной ФВ ЛЖ. При проведении анализа воспроизводимости отмечено, что трехмерный режим спекл3трекинг ЭхоКГ имеет меньшую внутриоператорскую и межоператорскую ошибку, а также занимает меньше времени на обработку изображений. Summary The study included 70 patients with chronic heart failure (CHF) with a preserved and reduced ejection fraction of the left ventricle (LVEF). All patients underwent standard transthoracic echocardiography with tissue myocardial dopplerography technology and speckle3tracking echocardiography in two and three dimensional modes. A comparative analysis showed that the parameters of LV deformation in patients with CHF with preserved and reduced LVEF in three3dimensional mode speckle tracking echocardiography were lower than in two3dimensional. Two methods were correlated with each other in calculating the deformation properties of both longitudinal and circular LV myocardial fibers. ROC analysis showed the diagnostic significance of the global area strain in patients with CHF with intact and with reduced LVEF. When conducting a reproducibility analysis, it was noted that the three3dimensional speckle tracking echocardiography mode has less intra3operator and inter3operator error, and also takes less time to process images.

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