Electronic Resource
Springer
European journal of nuclear medicine
10 (1985), S. 500-504
ISSN:
1619-7089
Keywords:
Fourier analysis
;
Breathing artifacts
;
List mode
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00252741
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