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carcinoma of cervix

Journal of Radiotherapy in Practice (1)

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Variation in applicator positions during interfraction high-dose rate brachytherapy in carcinoma cervix: dosimetric evaluation
Kamlesh Passi, Lalit M. Aggarwal, Rajesh Vashistha, Bikramjit Singh, Parveen Kaur, Sureshchandra J. Gupta, Than S. Kehwar
Journal:

Journal of Radiotherapy in Practice / Volume 12 / Issue 4 / December 2013

Published online by Cambridge University Press:

23 April 2013, pp. 305-317
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Purpose
This study was designed to study the variations in different geometrical and dosimetric parameters.
Materials and methods
In this study, two groups comprises 21 and 28 patients, who were treated with 9·5 Gy × 2 Fx and 7·5 Gy × 3 Fx, respectively, using microselectron high-dose rate (HDR) remote control unit. All patients were analysed using orthogonal radiographs to evaluate variations in different parameters.
Results
Variations in different parameters are more in Group II patients than in Group I patients, which show that the variation in geometrical and dosimetrical parameters increases with increasing HDR number of fractions.
Conclusion
In the reporting of an outcome of multiple fractionation of HDR treatments resultant dosimetric parameters must be evaluated and must be used for clinical interpretation.