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[Normal values of left ventricular function. Biplanar angiocardiography with reference to sex-specific differences]
C Thüring1, O M Hess, T Murakami
1Departement für Innere Medizin, Medizinische Poliklinik, Universitätsspital, Zürich.
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|May 1, 1989
Summary
This study established normal left ventricular function values using biplane angiocardiography. Radial axis shortening parameters provided more reliable regional function assessment than orthogonal methods.
Area of Science:
- Cardiology
- Medical Imaging
Background:
- Assessing normal left ventricular function is crucial for diagnosing cardiac conditions.
- Biplane angiocardiography is a standard imaging technique for evaluating cardiac structure and function.
Purpose of the Study:
- To determine normal values for global and regional left ventricular function.
- To compare the reliability of different methods for assessing regional ventricular function.
- To investigate sex-based differences in left ventricular parameters.
Main Methods:
- Biplane angiocardiography was performed on 24 patients to assess left ventricular function.
- Global parameters included chamber volume, ejection fraction, and muscle mass.
- Regional function was evaluated using orthogonal and radial axial systems, including regional area reduction.
Main Results:
- Radial axis shortening parameters demonstrated lower variability than orthogonal parameters.
- Regional area reduction methods showed the smallest coefficient of variation, indicating high reliability.
- Women exhibited significantly lower left ventricular chamber volumes and muscle mass compared to men.
- No significant sex-based differences were observed in ejection fraction or wall thickness.
Conclusions:
- Radial axis shortening and regional area reduction are reliable methods for assessing regional left ventricular function.
- Established normal values provide a reference for clinical interpretation.
- Sex-specific differences in cardiac morphology (volume, mass) exist, but functional parameters like ejection fraction are comparable.