Minimal cardiac transit times ?A sensitive parameter reflecting changes in cardiac volume-to-flow ratios
| Autor: | Harald Schicha, Veit Becker, A. Höck, Miroslav Profant, Lösse B, C. Freundlieb, Ludwig E. Feinendegen, K. Vyska |
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| Rok vydání: | 1983 |
| Předmět: |
Pulmonary Circulation
Radioisotope Dilution Technique Cardiac output medicine.medical_specialty animal structures Ventricular Ejection Fraction Ejection fraction Cardiac Volume Models Cardiovascular Hemodynamics Stroke Volume General Medicine Stroke volume Heart Rate Internal medicine Heart rate Circulatory system cardiovascular system Cardiology medicine Humans Radiology Nuclear Medicine and imaging Cardiac Output Mathematics |
| Zdroj: | European Journal of Nuclear Medicine. 8 |
| ISSN: | 1619-7089 0340-6997 |
| DOI: | 10.1007/bf00251612 |
| Popis: | Minimal cardiac transit times (MTTs) are differences between times of appearance of the indicator at consecutive segments of the cardiopulmonary circulation. The MTTs are shown to be directly proportional to the quotient of volume to flow. The relationship of the cardiac MTTs to ventricular ejection fraction was derived. Utilizing this technique the ejection fractions of the left and right ventricles in 72 normal individuals were calculated. Theoretical aspects of measureing cardiac MTTs were related to experience of clinical application and confirmed its usefulness. |
| Databáze: | OpenAIRE |
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