Data come from the first escape (FE) peak in the case of the 100 cc detector and from the photopeak
in the case of the 300 cc detector.
Conclusion: The photopeak
efficiencies decrease as energy increases and the observed efficiency curves were closely with similar studies.
The samples are measured the next day for the induced Au-198 photopeak
A window of 20% centered on the 140-keV photopeak
The energy-deposition spectra are characterized by a delta function at the incident photon energy (corresponding to a total-energy deposition event, the so-called photopeak
) with a probability that would give the photopeak
area if the intrinsic resolution function were to be applied.
This device will have minimal energy requirement and possess excellent photopeak
5a, which was also confirmed by the presence of the Fe2p photopeak
During a five-minute counting time, the 137Cs content of the body burden was determined from the photopeak
The energy resolution for the carbon photopeak
was measured to be about 3%.
I = photopeak
area S = sensitivity factor T = total acquisition time n = number of photopeaks
From Monte Carlo modeling of patient energy spectra, we determined that a lower energy window limit of 110 keV would capture a substantial proportion of misregistered photopeak
events while including only a small amount of scattered events into the image.
was curve-fit and the results are illustrated in Fig.