Results 21 to 30 of about 145,389 (199)

Features of remodeling of right heart chambers according to tissue Doppler and its correlation with cardiac rhythm disturbance in patients with COPD 2-3 severity

Учёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2014
The article presents the study of early sings of dysfunction of right and left chambers of heart in patients with COPD 2 - 3 severity, correlation between structural and electrical remodeling of heart according to the stages of pulmonary hypertension ...
O. A. Zhuk, V. E. Perley, A. Y. Gichkin, A. L. Alexandrov, O. N. Titova, N. A. Kuzubova, N. V. Egorova   +6 more
doaj   +1 more source

Predictors of transient left ventricular dysfunction following transcatheter patent ductus arteriosus closure in pediatric age

Journal of the Saudi Heart Association, 2017
Objectives: To evaluate the left ventricular function before and after transcatheter percutaneous patent ductus arteriosus (PDA) closure, and to identify the predictors of myocardial dysfunction post-PDA closure if present.
Hala Mounir Agha, Hala S. Hamza, Alyaa Kotby, Mona E.L. Ganzoury, Nanies Soliman   +4 more
doaj   +1 more source

Tissue Doppler Imaging: An Overview

, 2021
Tissue Doppler Imaging (TDI) is a non-invasive, echocardiographic imaging technique that measures myocardial motion velocity throughout the cardiac cycle using Doppler principles. While conventional Doppler techniques assess blood flow velocity by sensing high-frequency, low amplitude signals from small, fast-moving blood cells, TDI uses the same ...
Nashnoush, Mohamed, Chopra, Chirag, Sheikh, Muneeza   +2 more
openaire   +2 more sources

Evaluation of Tissue Doppler Echocardiographic Imaging findings in children with pulmonary hypertension

The Turkish Journal of Pediatrics, 2017
Tissue Doppler Imaging has become an important prognostic marker that can be used in follow-up and determination of the prognosis in pulmonary hypertension patients.
Alper Akın, Dursun Alehan, Hayrettin Hakan Aykan, Süheyla Özkutlu, Sema Özer, Tevfik Karagöz   +5 more
doaj   +1 more source

Assessing the performance of ultrafast vector flow imaging in the neonatal heart via multiphysics modeling and In vitro experiments [PDF]

, 2016
Ultrafast vector flow imaging would benefit newborn patients with congenital heart disorders, but still requires thorough validation before translation to clinical practice. This paper investigates 2-D speckle tracking (ST) of intraventricular blood flow
Fadnes, Solveig, Lovstakken, Lasse, Rodriguez-Morales, Alfonso, Segers, Patrick, Swillens, Abigaïl, Van Cauwenberge, Joris, Vierendeels, Jan   +6 more
core   +2 more sources

Tissue Doppler imaging of the fetal heart [PDF]

Ultrasound in Obstetrics & Gynecology, 2000
AbstractObjectivesThe objectives of this study were: (i) to assess the feasibility of a tissue Doppler imaging (TDI) evaluation in the fetus, (ii) to identify color‐TDI patterns consistent with the various phases of the cardiac cycle; and (iii) to assess myocardial velocities and the myocardial velocity gradient.MethodsEighty‐nine normal fetuses ...
PALADINI, DARIO, LAMBERTI A, TEODORO A, ARIENZO M, TARTAGLIONE A, MARTINELLI, PASQUALE   +5 more
openaire   +3 more sources

EFSUMB Recommendations and Guidelines for Gastrointestinal Ultrasound - Part 1: Examination Techniques and Normal Findings (Long version). [PDF]

, 2016
▼ In October 2014 the European Federation of Societies for Ultrasound in Medicine and Biology formed a Gastrointestinal Ultrasound (GIUS) task force group to promote the use of GIUS in a clinical setting.
Calabrese, E., Dietrich, C. F., Dirks, K., Gilja, O. H., Hausken, T., Higginson, A., Hollerweger, A., Maaser, C., Maconi, G., Nuernberg, D., Nylund, K., Pallotta, Nadia, Ripolles, T., Romanini, L., Saftoiu, A., Serra, C., Sporea, I.   +16 more
core   +3 more sources

Monitoring of Adult Zebrafish Heart Regeneration Using High-Frequency Ultrasound Spectral Doppler and Nakagami Imaging

Sensors, 2019
This paper reports the feasibility of Nakagami imaging in monitoring the regeneration process of zebrafish hearts in a noninvasive manner. In addition, spectral Doppler waveforms that are typically used to access the diastolic function were measured to ...
Sunmi Yeo, Changhan Yoon, Ching-Ling Lien, Tai-Kyong Song, K. Kirk Shung   +4 more
doaj   +1 more source

Comparison of laser speckle contrast imaging with laser Doppler for assessing microvascular function [PDF]

, 2011
Objective: To compare the inter-day reproducibility of post-occlusive reactive hyperaemia (PORH) and sympathetic vasomotor reflexes assessed by single-point laser Doppler flowmetry (SP-LDF), integrating-probe LDF (IP-LDF) and laser speckle contrast ...
Briers, J. David, Crank, Helen, Hodges, Gary J., Klonizakis, Markos, Tew, Garry A.   +4 more
core   +1 more source

A Clinician’s Guide to Tissue Doppler Imaging [PDF]

Circulation, 2006
Tissue Doppler imaging (TDI) is a relatively new echocardiographic technique that uses Doppler principles to measure the velocity of myocardial motion. We describe the principles behind and the clinical utility of TDI. Doppler echocardiography relies on detection of the shift in frequency of ultrasound signals reflected from moving objects.
Carolyn Y, Ho, Scott D, Solomon
openaire   +2 more sources