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Investigation of the entrance surface dose and dose to different organs in lumbar spine imaging.

Sina S, Zeinali B, Karimipoorfard M, Lotfalizadeh F, Sadeghi M, Zamani E, Faghihi R - J Biomed Phys Eng (2014)

Bottom Line: The results indicate that there is a close agreement between the results of the two dosimeters.Based on the results of this experiment, the ESD dose of the 16 patients included in this study varied between 2.71 mGy and 26.29 mGy with the average of 11.89 mGy for TLD-100, and between 2.55 mGy and 27.41 mGy with the average of 12.32 mGy for GR-200 measurements.According to the results, the GR200 has greater sensitivity than the TLD-100.

View Article: PubMed Central - PubMed

Affiliation: Radiation Research Center, Shiraz University, Shiraz, Iran.

ABSTRACT

Background: Dose assessment using proper dosimeters is especially important in radiation protection optimization and imaging justification in diagnostic radiology.

Objective: The aim of this study is to obtain the Entrance Skin Dose (ESD) of patients undergoing lumbar spine imaging using two thermoluminescence dosimeters TLD-100 (LiF: Mg, Ti) and GR-200 (LiF: Mg, Cu, P) and also to obtain the absorbed dose to different organs in lumbar spine imaging with several views.

Methods: To measure the ESD values of the patients undergoing lumbar spine imaging, the two TLD types were put on their skin surface. The ESD values for different views of lumbar spine imaging were also measured by putting the TLDs at the surface of the Rando phantom. Several TLD chips were inserted inside different organs of Rando phantom to measure the absorbed dose to different organs in lumbar spine imaging.

Results: The results indicate that there is a close agreement between the results of the two dosimeters. Based on the results of this experiment, the ESD dose of the 16 patients included in this study varied between 2.71 mGy and 26.29 mGy with the average of 11.89 mGy for TLD-100, and between 2.55 mGy and 27.41 mGy with the average of 12.32 mGy for GR-200 measurements. The ESDs obtained by putting the two types of TLDs at the surface of Rando phantom are in close agreement.

Conclusion: According to the results, the GR200 has greater sensitivity than the TLD-100.

No MeSH data available.


Percentage difference between the dose measured by TLD-100, GR-200, and SoliDose
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Figure 1: Percentage difference between the dose measured by TLD-100, GR-200, and SoliDose

Mentions: Comparison of the ESD values for 2, 4, and 5 view images, obtained by TLD-100, GR-200, and SoliDose, are shown in table 5. The percentage differences between the three above-mentioned methods are shown in figure 1.


Investigation of the entrance surface dose and dose to different organs in lumbar spine imaging.

Sina S, Zeinali B, Karimipoorfard M, Lotfalizadeh F, Sadeghi M, Zamani E, Faghihi R - J Biomed Phys Eng (2014)

Percentage difference between the dose measured by TLD-100, GR-200, and SoliDose
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4289519&req=5

Figure 1: Percentage difference between the dose measured by TLD-100, GR-200, and SoliDose
Mentions: Comparison of the ESD values for 2, 4, and 5 view images, obtained by TLD-100, GR-200, and SoliDose, are shown in table 5. The percentage differences between the three above-mentioned methods are shown in figure 1.

Bottom Line: The results indicate that there is a close agreement between the results of the two dosimeters.Based on the results of this experiment, the ESD dose of the 16 patients included in this study varied between 2.71 mGy and 26.29 mGy with the average of 11.89 mGy for TLD-100, and between 2.55 mGy and 27.41 mGy with the average of 12.32 mGy for GR-200 measurements.According to the results, the GR200 has greater sensitivity than the TLD-100.

View Article: PubMed Central - PubMed

Affiliation: Radiation Research Center, Shiraz University, Shiraz, Iran.

ABSTRACT

Background: Dose assessment using proper dosimeters is especially important in radiation protection optimization and imaging justification in diagnostic radiology.

Objective: The aim of this study is to obtain the Entrance Skin Dose (ESD) of patients undergoing lumbar spine imaging using two thermoluminescence dosimeters TLD-100 (LiF: Mg, Ti) and GR-200 (LiF: Mg, Cu, P) and also to obtain the absorbed dose to different organs in lumbar spine imaging with several views.

Methods: To measure the ESD values of the patients undergoing lumbar spine imaging, the two TLD types were put on their skin surface. The ESD values for different views of lumbar spine imaging were also measured by putting the TLDs at the surface of the Rando phantom. Several TLD chips were inserted inside different organs of Rando phantom to measure the absorbed dose to different organs in lumbar spine imaging.

Results: The results indicate that there is a close agreement between the results of the two dosimeters. Based on the results of this experiment, the ESD dose of the 16 patients included in this study varied between 2.71 mGy and 26.29 mGy with the average of 11.89 mGy for TLD-100, and between 2.55 mGy and 27.41 mGy with the average of 12.32 mGy for GR-200 measurements. The ESDs obtained by putting the two types of TLDs at the surface of Rando phantom are in close agreement.

Conclusion: According to the results, the GR200 has greater sensitivity than the TLD-100.

No MeSH data available.