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Iranian Journal of Medical Physics، جلد ۱۹، شماره ۴، صفحات ۲۳۴-۲۴۰
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عنوان انگلیسی A Comparative Analysis of Different Prescription Points in High Dose Rate Brachytherapy of Cervical Cancer
چکیده انگلیسی مقاله Introduction: The dose prescription point in high dose rate (HDR) intracavitory brachytherapy (ICBT) of cervical cancer is Manchester point A but the localization of this point has a wider variation. To minimize these variations, the American Brachytherapy Society (ABS) introduced a new definition of point A and named it as point H. In this study, these two points have been compared in terms of dosimetric parameters.Material and Methods: Twenty HDR ICBT of cervical cancer patients were retrospectively evaluated with Manchester point A and ABS point H. Target volume covered by prescribed dose (TV), dose to 2cc (D2cc) of the bladder and rectum were noted for both points. Statistical analysis using a two-tailed paired t-test was performed to compare dosimetric parameters of both the points of prescription. The maximum value, minimum value, and mean ± standard deviation along with the p value have been noted.Results: On average, point H was 4.0mm ± 6.4mm shifted (superior/inferior) from point A, along the tandem direction. The average TV when the prescription was done at point H (TVH) was 33.7cc ± 10.1cc which was higher than the average TV when the prescription was done at point A (TVA) of 33.3cc ± 9.4 cc.D2cc increased from 63% ± 23% to 68% ± 24% for the rectum and 52% ± 18% to 56% ± 20% for the bladder when the prescription point changed from A to H.Conclusion: As observed, average TV, D2cc of the bladder, and rectum were higher in the case of point H prescription plan (PH) as compared with point A prescription plan (PA). The dose difference between PH and PA was found to be statistically significant, so careful consideration is needed to implementation of new point H in clinical practice.
کلیدواژه‌های انگلیسی مقاله Cervical Cancer, High Dose Rate, Brachytherapy, Manchester Point A, ABS Point H
نویسندگان مقاله | GURPREET KAUR
Department of Radiation Oncology, Guru Gobind Singh Medical College and Hospital, Faridkot, India


| Anoop Srivastava
Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Vibhuti Khand Gomti Nagar, Lucknow -226010 India


| Pardeep Garg
Department of Radiation Oncology, Guru Gobind Singh Medical College and Hospital, Faridkot, India


| Manraj Singh Kang
Department of Radiation Oncology, Guru Gobind Singh Medical College and Hospital, Faridkot, India


| Romikant Grover
Department of Radiation Oncology, Guru Gobind Singh Medical College and Hospital, Faridkot, India


| Garima Gaur
Department of Radiation Oncology, Guru Gobind Singh Medical College and Hospital, Faridkot, India


| Sheetal Sheetal
Advance Cancer Centre, Bathinda, Punjab


| Vinod Dangwal
Department of Radiation Oncology, Govt. Medical College, Patiala, India
نشانی اینترنتی https://ijmp.mums.ac.ir/article_19498.html
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