Results 21 to 30 of about 144,156 (202)

Quantification of spatial intensity correlations and photodetector intensity fluctuations of coherent light reflected from turbid particle suspensions [PDF]

, 2007
We present a model for predicting the spatial intensity correlation function of dynamic speckle patterns formed by light backscattered from turbid suspensions, and an experimental validation of these predictions. The spatial correlation varies remarkably
Leeuwen, Ton G. van, Rajan, Vinayakrishnan, Steenbergen, Wiendelt, Varghese, Babu   +3 more
core   +4 more sources

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

Angiogenic gene expression and vascular density are reflected in ultrasonographic features of synovitis in early Rheumatoid Arthritis: an observational study. [PDF]

, 2015
INTRODUCTION: Neovascularization contributes to the development of sustained synovial inflammation in the early stages of Rheumatoid Arthritis. Ultrasound (US) provides an indirect method of assessing synovial blood flow and has been shown to correlate ...
AE Koch, AE Koch, Alessandra Marrelli, Arti Mahto, AW Mould, Costantino Pitzalis, Debasish Pyne, E Bodolay, Frances Humby, J Holash, J Holash, K Polzer, Lu Zou, M Andersen, M Raica, M Walther, M Walther, Maria DiCicco, Michele Bombardieri, Nora Ng, P Haiko, PP Tak, Rebecca E Hands, S Kelly, S Lee, Stephen Kelly, Sudeh Riahi, U Fiocco, U Fiocco, V Krenn, WA Schmidt, Y Jing, Y Xu, Z Szekanecz   +33 more
core   +2 more sources

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

GPU accelerated real-time multi-functional spectral-domain optical coherence tomography system at 1300 nm. [PDF]

, 2012
We present a GPU accelerated multi-functional spectral domain optical coherence tomography system at 1300 nm. The system is capable of real-time processing and display of every intensity image, comprised of 512 pixels by 2048 A-lines acquired at 20 ...
Islam, M Shahidul, Oh, Christian M, Oliveira, Michael C, Ortega, Arthur, Park, B Hyle, Wang, Yan   +5 more
core   +2 more sources

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

Cerebral tissue pO2 response to stimulation is preserved with age in awake mice [PDF]

, 2019
Published in final edited form as: Neurosci Lett. 2019 April 23; 699: 160–166. doi:10.1016/j.neulet.2019.02.007.Compromised oxygen supply to cerebral tissue could be an important mechanism contributing to age-related cognition decline. We recently showed
Boas, David, Bélanger, Samuel, Kakkar, Ashok, Lesage, Frédéric, Lu, Xuecong, Moeini, Mohammad, Picard, Frédéric   +6 more
core   +1 more source

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

Quantification of Renal Stone Contrast with Ultrasound in Human Subjects [PDF]

, 2017
Purpose: Greater visual contrast between calculi and tissue would improve ultrasound (US) imaging of urolithiasis and potentially expand clinical use. The color Doppler twinkling artifact has been suggested to provide enhanced contrast of stones compared
Bailey, Michael R., Bruce, Matthew, Cunitz, Bryan W., Dunmire, Barbrina, Haider, Yasser A., Harper, Jonathan D., Liu, Ziyue, May, Philip C., Sorensen, Mathew D., Thiel, Jeff   +9 more
core   +2 more sources