Evaluation of aortic and mitral valve regurgitation by radionuclide ventriculography: comparison with the method of Sandler and Dodge
The present investigation was undertaken to introduce a quantitative scintigraphic method for evaluation of regurgitation and to compare it with the generally accepted quantitative method of Sandler and Dodge. Radionuclide ventriculography was carried out after injection of 20 mCi 99mtechnetium-labeled red blood cells. Time-activity curves were obtained from the left and right ventricular regions. The ratio of end-diastolic-end-systolic count-rate differences for the left and right ventricles was calculated. The ratio (A) was compared with a hemodynamic ratio determined after the method of Sandler and Dodge with the stroke volume of the left ventricle measured angiographically, and the stroke volume of the right ventricle measured by thermodilution. In 33 patients with aortic and mitral valve regurgitation researchers found a correlation of r . 0.75. Due to a broad range of normal values of the sensitivity of the scintigraphic method is low. The specificity seems to be high, however, since in 64 patients with all types of heart diseases there were no false positive results. Comparing the described scintigraphic method with other modern or generally accepted methods, the principal advantages are noninvasiveness, good practicability, and the fact that important additional information about the functional state of the heart is gained. This is important in follow-up studies in patients with chronic valvular incompetence. It seems that this method will become a valuable supplement to heart catheterization in the diagnosis of valvular heart disease and may partially replace invasive methods for measuring the regurgitation fraction.
- OSTI ID:
- 5502982
- Journal Information:
- Clin. Cardiol.; (United States), Vol. 4:1
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
CARDIOVASCULAR DISEASES
DIAGNOSIS
HEART
SCINTISCANNING
TECHNETIUM 99
DIAGNOSTIC USES
AORTA
BIOMEDICAL RADIOGRAPHY
BLOOD CIRCULATION
COMPARATIVE EVALUATIONS
ERYTHROCYTES
ISOMERIC NUCLEI
MEASURING METHODS
PATIENTS
QUANTITATIVE CHEMICAL ANALYSIS
ARTERIES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BLOOD VESSELS
BODY
BODY FLUIDS
CARDIOVASCULAR SYSTEM
CHEMICAL ANALYSIS
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
DISEASES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MEDICINE
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY
TECHNETIUM ISOTOPES
USES
YEARS LIVING RADIOISOTOPES
550601* - Medicine- Unsealed Radionuclides in Diagnostics
551001 - Physiological Systems- Tracer Techniques