Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect.
Bottom Line: The scintillator of the current SOF dosimeter is a 1-mm diameter hemisphere.A dichroic mirror was used for separating input light signals.Individual signal counting was performed for high- and low-wavelength light signals.
Affiliation: Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, N-15 W-7 Kita-ku, Sapporo Hokkaido, 060-8638, Japan firstname.lastname@example.org.Show MeSH
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Mentions: Figure 8a and 8b shows the results of the SOF measurement and the MCNPX 2.4 calculation. The values for the MCNPX calculation were normalized at the −50 mm position with the value of SOF probe #1. The maximum differences between the SOF measurement and the MCNPX calculation for probes #1 and #2 were 5.06% and 4.80%, respectively, whereas for the limited range within 10 mm, the maximum differences were 0.90% and 2.07%, respectively. Therriaut-Proulx et al.  performed a phantom study using a plastic scintillator detector (PSD) based on in vivo dosimetry for HDR 192Ir brachytherapy. The measurement agreed within 6% compared with the calculation of a treatment-planning system. Our results are comparative with these results.Fig. 8.
Affiliation: Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, N-15 W-7 Kita-ku, Sapporo Hokkaido, 060-8638, Japan email@example.com.