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Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect.

Ishikawa M, Nagase N, Matsuura T, Hiratsuka J, Suzuki R, Miyamoto N, Sutherland KL, Fujita K, Shirato H - J. Radiat. Res. (2015)

Bottom Line: A dichroic mirror was used for separating input light signals.Individual signal counting was performed for high- and low-wavelength light signals.Optical fiber bending was also addressed; no bending effect was observed for our wavelength-separated SOF dosimeter.

View Article: PubMed Central - PubMed

Affiliation: Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, N-15 W-7 Kita-ku, Sapporo Hokkaido, 060-8638, Japan masayori@med.hokudai.ac.jp.

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The result of MCNPX 2.4 calculation and SOF measurement with and without Cerenkov correction. The measured absolute dose in (a) linear scale, (b) log scale.
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RRU106F8: The result of MCNPX 2.4 calculation and SOF measurement with and without Cerenkov correction. The measured absolute dose in (a) linear scale, (b) log scale.

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. [23] 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.


Development of a wavelength-separated type scintillator with optical fiber (SOF) dosimeter to compensate for the Cerenkov radiation effect.

Ishikawa M, Nagase N, Matsuura T, Hiratsuka J, Suzuki R, Miyamoto N, Sutherland KL, Fujita K, Shirato H - J. Radiat. Res. (2015)

The result of MCNPX 2.4 calculation and SOF measurement with and without Cerenkov correction. The measured absolute dose in (a) linear scale, (b) log scale.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4380053&req=5

RRU106F8: The result of MCNPX 2.4 calculation and SOF measurement with and without Cerenkov correction. The measured absolute dose in (a) linear scale, (b) log scale.
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. [23] 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.

Bottom Line: A dichroic mirror was used for separating input light signals.Individual signal counting was performed for high- and low-wavelength light signals.Optical fiber bending was also addressed; no bending effect was observed for our wavelength-separated SOF dosimeter.

View Article: PubMed Central - PubMed

Affiliation: Department of Medical Physics and Engineering, Graduate School of Medicine, Hokkaido University, N-15 W-7 Kita-ku, Sapporo Hokkaido, 060-8638, Japan masayori@med.hokudai.ac.jp.

Show MeSH
Related in: MedlinePlus