Studies on the Fourier smoothing of volume curves of the left ventricle won by means of nuclear medicine

Contractions of the left ventricle and the corresponding volume curves can be registered with the help of function scintigraphy and 99mTc serum albumin. The values are however subject to a statistical distribution as a result of the statistical nature of the radioactive decay. A computer program presented in this work based on the Fourier transformation compensates for this. The demands, which were placed from the cardiological view on this smoothing algorithm, can be met by this procedure and make it therefore superior to other methods. The achieved smoothing effect is achieved without the loss of curve authenticity. Clinical parameters can be determined from this thus smoothed curve with good exactness and reproducibility. (TRV)