Related Experiment Videos
Normal right ventricular systolic and diastolic function assessed by krypton-81m equilibrium ventriculography
R M Oliver1, J S Fleming, K D Dawkins
1Clinical Pharmacology Group, University of Southampton, UK.
International Journal of Cardiac Imaging
|December 1, 1993
Summary
Krypton-81m ventriculography accurately assessed resting right ventricular function in healthy men. Exercise studies were limited by motion artifact, making resting measurements more reliable for systolic and diastolic indices.
Area of Science:
- Nuclear medicine
- Cardiovascular physiology
- Medical imaging
Background:
- Right ventricular function assessment is crucial in cardiovascular diagnostics.
- Previous methods for evaluating right ventricular function have limitations.
- Equilibrium radionuclide ventriculography offers a non-invasive approach.
Purpose of the Study:
- To evaluate right ventricular systolic and diastolic function in healthy individuals using Krypton-81m.
- To establish normal reference ranges for right ventricular function indices at rest.
- To assess the feasibility of using this technique during exercise.
Main Methods:
- Krypton-81m equilibrium ventriculography was performed on 23 healthy male volunteers.
- Technetium-99m lung perfusion scintigraphy was used for background correction.
- Time-activity curves were generated to calculate systolic and diastolic indices.
Main Results:
- Resting right ventricular systolic ejection and diastolic filling indices were comparable to left ventricular values.
- Image quality was sufficient for reliable measurement of resting function.
- Movement artifact during exercise significantly degraded image quality, limiting accurate measurements.
Conclusions:
- Krypton-81m ventriculography is a reliable method for assessing resting right ventricular function.
- Normal systolic and diastolic indices for the right ventricle were defined.
- The technique is currently limited to resting studies due to exercise-induced artifacts.