Rioux J N, Renaud L, Dupras G
Eur J Nucl Med. 1985;10(11-12):500-4. doi: 10.1007/BF00252741.
The frequency content of the ungated radionuclide time-activity curves for left and right ventricles was analyzed using a power spectrum estimation technique. This technique was applied to ten patients. It was observed that 75% of the contraction power of any ventricle was contained in the fundamental and at least 98% contained in the fundamental plus the first harmonic. Patients presenting bigeminy and trigeminy had a completely different spectrum distribution which calls for a different interpretation. Low frequency spectrum lines have been observed at breathing frequency. Up to 62% of the total power may be contained in those spectrum lines.
使用功率谱估计技术分析了左心室和右心室的非门控放射性核素时间-活度曲线的频率成分。该技术应用于10名患者。观察到任何心室75%的收缩功率包含在基波中，至少98%包含在基波加一次谐波中。出现二联律和三联律的患者具有完全不同的频谱分布，这需要不同的解释。在呼吸频率处观察到低频谱线。这些谱线可能包含高达62%的总功率。
