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Srivastava, Shraddha, Singh, Navin, Kashyap, Varun Kumar. (1401). Dosimetric Evaluation of Different Optimization Algorithms Used in Interstitial Brachytherapy of Cervical Carcinoma. سامانه مدیریت نشریات علمی, 12(4), 339-348. doi: 10.31661/jbpe.v0i0.2104-1306
Shraddha Srivastava; Navin Singh; Varun Kumar Kashyap. "Dosimetric Evaluation of Different Optimization Algorithms Used in Interstitial Brachytherapy of Cervical Carcinoma". سامانه مدیریت نشریات علمی, 12, 4, 1401, 339-348. doi: 10.31661/jbpe.v0i0.2104-1306
Srivastava, Shraddha, Singh, Navin, Kashyap, Varun Kumar. (1401). 'Dosimetric Evaluation of Different Optimization Algorithms Used in Interstitial Brachytherapy of Cervical Carcinoma', سامانه مدیریت نشریات علمی, 12(4), pp. 339-348. doi: 10.31661/jbpe.v0i0.2104-1306
Srivastava, Shraddha, Singh, Navin, Kashyap, Varun Kumar. Dosimetric Evaluation of Different Optimization Algorithms Used in Interstitial Brachytherapy of Cervical Carcinoma. سامانه مدیریت نشریات علمی, 1401; 12(4): 339-348. doi: 10.31661/jbpe.v0i0.2104-1306

Dosimetric Evaluation of Different Optimization Algorithms Used in Interstitial Brachytherapy of Cervical Carcinoma

Journal of Biomedical Physics and Engineering
مقاله 3، دوره 12، شماره 4، آبان 2022، صفحه 339-348    اصل مقاله (867.57 K)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2104-1306
نویسندگان
Shraddha Srivastava1؛ Navin Singh* 1؛ Varun Kumar Kashyap2
1PhD, Department of Radiotherapy King George’s Medical University Lucknow, Uttar Pradesh, India
2PhD, Department of Community Medicine, HIMSAR, New Delhi, India
چکیده
Background: Conventional optimization techniques are based on the planning approach in which positions and weights are varied to generate the desired dose distribution. Inverse planning simulated annealing (IPSA) is an advanced optimization method developed to automatically determine a suitable combination of positions to design an acceptable plan. 
Objective: In this study, three optimization techniques namely IPSA, graphical optimization (GROPT), and geometrical optimization (GOPT) methods are compared in high-dose-rate interstitial brachytherapy of cervical carcinoma.
Material and Methods: In this retrospective study, twenty computed tomography (CT) data sets of 10 cervical cancer patients treated with Martinez Universal Perineal Interstitial Template-based interstitial brachytherapy were studied. The treatment plans generated were optimized using the IPSA, and GOPT methods. The prescribed dose was 24 Gy in 4 fractions. Plans produced using IPSA, GrOPT, and GOPT techniques were analyzed for comparison of dosimetric parameters, including target coverage, homogeneity, conformity, and organs at risk (OAR) doses. 
Results: V100 values for IPSA, GrOPT and GOPT plans were 95.81±2.33%, 93.12±2.76% and 88.90±4.95%, respectively. The mean D90 values for the IPSA, GrOPT, and GOPT plans were 6.45±0.15 Gy, 6.12±0.21 Gy, and 5.85±0.57 Gy, respectively. Significantly lower doses of OAR were in the IPSA plans that were more homogeneous (HI=0.66). Conformity was comparatively higher in IPSA-based plans (CI=0.75).  
Conclusion: IPSA plans were superior and resulted in better target coverage, homogeneity, conformity, and minimal OAR doses.
کلیدواژه‌ها
Brachytherapy؛ Cervical Cancer؛ Conformity؛ Algorithms؛ Tomography Uterine Cervical Neoplasms
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مراجع
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