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Cites:

1

Information Journal Paper

Title

OUT-OF-FIELD PHOTON DOSIMETRY STUDY BETWEEN 3-D CONFORMAL AND INTENSITY MODULATED RADIATION THERAPY IN THE MANAGEMENT OF PROSTATE CANCER

Pages

  127-134

Abstract

 Background: The present work aims to study the out-of-field photon calculation accuracy of a commercial treatment planning system (TPS), Oncentra, for three-dimensional conformal radiotherapy (3D-CRT) and intensity modulated radiation therapy (IMRT) treatment techniques from Elekta Synergy medical linear accelerator. Materials and Methods: Accuracy of individual OUT-OF-FIELD DOSE components was studied by defining a square field of 10x10 cm2 in our TPS and it is verified by using ionization chamber and TLDs (Thermoluminescent dosimeter) at 5 cm depth. Using 3D-CRT and IMRT techniques Ca (carcinoma) prostate treatment plans were created using 6 MV photon beam and calculated in Oncentra Masterplan v4.3 planning systems for out-of-field and further compared the same with TLD measurements.Results: Individual components study shows the poor out-of field calculations in TPS, with respect to that obtained from TLD measurements. Underestimation increases from 10 % to 80 % as a contribution from various components while moving far from field edge. Complex IMRT plans resemble this underestimation of TPS calculations in greater extend.Conclusion: This study quantifies the poor accuracy for out-of -field dose calculations in TPS. No significant difference in 3D-CRT and IMRT plans is found at near field edge. While, as distance from field edge increases, underestimation of TPS in IMRT plan is higher.10% – 60% difference in out of- field dose was found as distance move from 2 cm to 7.5 cm far from field edge between TPS estimations and the measurements.

Cites

References

Cite

APA: Copy

SIJI CYRIAC, T., MUSTHAFA, M.M., GANAPATHI RAMAN, R., ABDUL HANEEFA, K., & BHASI, SAJU. (2015). OUT-OF-FIELD PHOTON DOSIMETRY STUDY BETWEEN 3-D CONFORMAL AND INTENSITY MODULATED RADIATION THERAPY IN THE MANAGEMENT OF PROSTATE CANCER. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 13(2), 127-134. SID. https://sid.ir/paper/286622/en

Vancouver: Copy

SIJI CYRIAC T., MUSTHAFA M.M., GANAPATHI RAMAN R., ABDUL HANEEFA K., BHASI SAJU. OUT-OF-FIELD PHOTON DOSIMETRY STUDY BETWEEN 3-D CONFORMAL AND INTENSITY MODULATED RADIATION THERAPY IN THE MANAGEMENT OF PROSTATE CANCER. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2015;13(2):127-134. Available from: https://sid.ir/paper/286622/en

IEEE: Copy

T. SIJI CYRIAC, M.M. MUSTHAFA, R. GANAPATHI RAMAN, K. ABDUL HANEEFA, and SAJU BHASI, “OUT-OF-FIELD PHOTON DOSIMETRY STUDY BETWEEN 3-D CONFORMAL AND INTENSITY MODULATED RADIATION THERAPY IN THE MANAGEMENT OF PROSTATE CANCER,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 13, no. 2, pp. 127–134, 2015, [Online]. Available: https://sid.ir/paper/286622/en

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