Results 31 to 40 of about 109,146 (223)

Capabilities of radiodiagnostic techniques for evaluating myocardial hemodynamics and contractility in ventricular arrhythmias

Вестник рентгенологии и радиологии, 2016
As of now, the study of ventricular arrhythmias (VA) is of topical interest for modern arrhythmology and cardiology. These arrhythmias constitute about 30% of all the arrhythmias and have a diverse etiopathogenetic basis.
K. V. Zavadovskiy, V. V. Saushkin, Yu. B. Lishmanov   +2 more
doaj   +1 more source

Detection of Coronary Artery Disease with Exercise Two–dimensional Echocardiography: Description of a Clinically Applicable Method and Comparison with Radionuclide Ventriculography

Circulation, 1983
Two-dimensional echocardiography (2-D echo) was performed in 73 patients evaluated for coronary artery disease (CAD) and in four normal volunteers before and immediately after a maximal treadmill exercise test.
M. Limacher, M. Quiñones, L. R. Poliner, J. Nelson, W. Winters, A. Waggoner   +5 more
semanticscholar   +1 more source

Comparison of gated myocardial perfusion SPECT, echocardiography and equilibrium radionuclide ventriculography in the evaluation of left ventricle contractility

Türk Kardiyoloji Derneği Arşivi, 2014
Objectives: In this study, we investigated the reliability of gated myocardial perfusion single-photon emission computerized tomography (GSPECT) for the evaluation of left ventricle (LV) function.
Filiz Hatipoğlu, Zeynep Burak, Özgür Ömür   +2 more
doaj   +1 more source

The importance of left ventricular function for long-term outcome after primary percutaneous coronary intervention

BMC Cardiovascular Disorders, 2008
Background In the present study we sought to determine the long-term prognostic value of left ventricular ejection fraction (LVEF), assessed by planar radionuclide ventriculography (PRV), after ST-elevation myocardial infarction (STEMI) treated with ...
Tio René A, Reiffers Stoffer, Dierckx Rudi A, Slart Riemer HJA, van der Horst Iwan CC, Huurnink Willem, Rasoul Saman, van der Vleuten Pieter A, Ottervanger Jan, De Boer Menko-Jan, Zijlstra Felix   +10 more
doaj   +1 more source

The Search for Supernova-produced Radionuclides in Terrestrial Deep-sea Archives [PDF]

, 2012
An enhanced concentration of 60Fe was found in a deep ocean's crust in 2004 in a layer corresponding to an age of ~2 Myr. The confirmation of this signal in terrestrial archives as supernova-induced and detection of other supernova-produced radionuclides is of great interest.
arxiv   +1 more source

Use of Equilibrium (Gated) Radionuclide Ventriculography to Quantitate Left Ventricular Output in Patients With and Without Left‐sided Valvular Regurgitation

Circulation, 1981
We examined the accuracy with which left ventricular output can be estimated by equilibrium radionuclide ventriculography. After red blood cells were labeled in vivo, we measured left ventricular enddiastolic and end-systolic count rates and the count ...
M. Konstam, J. Wynne, B. Holman, E. Brown, J. Neill, J. Kozlowski   +5 more
semanticscholar   +1 more source

Sincronia ventricular em portadores de miocardiopatia dilatada e indivíduos normais: avaliação através da ventriculografia radioisotópica Ventricular synchrony in patients with dilated cardiomyopathy and normal individuals: assessment by radionuclide ventriculography

Arquivos Brasileiros de Cardiologia, 2007
OBJETIVO: Estabelecer parâmetros de sincronia intra- e interventricular em indivíduos normais e compará-los aos de pacientes com miocardiopatia dilatada com e sem distúrbios de condução ao eletrocardiograma (ECG).
Simone Cristina S. Brandão, Maria Clementina P. Giorgi, Rodrigo T. de Miche, Silvana D'Orio Nishioka, Rafael Willain Lopes, Marisa Izaki, José Soares Junior, Martino Martinelli Filho, José Cláudio Meneghetti   +8 more
doaj   +1 more source

Activation cross section data of proton induced nuclear reactions on lanthanum in the 34-65 MeV energy range and application for production of medical radionuclides [PDF]

J. Radioanalytical and Nuclear Chemitry 312(3)(2017)691-704, 2018
Activation cross sections of the natLa(p,x)139,137m,137g,135,134,133mCe, natLa(p,x)135,134,133La and 133m,133g,131Ba nuclear reactions have been measured experimentally, for the first time (except 139Ce). Cross-sections in the 34-64 MeV energy range were obtained through an activation method combining the stacked foil irradiation technique and gamma ...
arxiv   +1 more source

Echocardiographic AV-interval optimization in patients with reduced left ventricular function

Cardiovascular Ultrasound, 2004
Background Ritter's method is a tool used to optimize AV delay in DDD pacemaker patients with normal left ventricular function only. The goal of our study was to evaluate Ritter's method in AV delay-interval optimization in patients with reduced left ...
Baumann G, Combs W, Richter WS, Knebel F, Borges AC, Melzer C, Theres H   +6 more
doaj   +1 more source

Imaging the Earth's Interior: the Angular Distribution of Terrestrial Neutrinos [PDF]

Earth Moon Planets 99:155-181,2006, 2004
Decays of radionuclides throughout the Earth's interior produce geothermal heat, but also are a source of antineutrinos. The (angle-integrated) geoneutrino flux places an integral constraint on the terrestrial radionuclide distribution. In this paper, we calculate the angular distribution of geoneutrinos, which opens a window on the differential ...
arxiv   +1 more source