The Feasibility of Hybrid IMRT treatment planning for Left sided Chest wall irradiation: A Comparative Treatment Planning Study

Publish Year: 1402
نوع سند: مقاله ژورنالی
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JR_IJMP-20-1_005

تاریخ نمایه سازی: 18 دی 1401

Abstract:

Introduction: Due to the limited target volume and irregular body surface, irradiating the chest wall (CW) and lymphatic nodes is more challenging. IMRT and VMAT (volumetric modulated arc therapy) are two treatment delivery techniques that help to improve dose coverage and homogeneity while reducing irradiation to the heart and ipsilateral (I/L) lung. The use of a hybrid treatment planning approach for the ca-breast will impact the treatment plan. The hybrid planning system must be reviewed and compared to alternative treatment options for ca-breast cancer. Material and Methods: For ۱۰ patients undergoing left-sided breast chest wall irradiation, the ۳ distinct planning techniques (FiF [Field-in-field], IMRT, and Hybrid IMRT) were evaluated. A prescription dose of ۴۰ Gy in ۱۵ fractions was used for the planned target volume (PTV). To compare plans, dose-volume histograms (DVHs) were assessed for PTV and organs at risk. Results: D۹۵% of PTV was ۳۷.۱۰ ± ۰.۴۸ Gy in FiF, but considerably raised to ۳۹.۳۲ ± ۰.۳۴ Gy and ۳۸.۳۹ ± ۰.۲۹ Gy in IMRT (p=۰.۰۱) and Hybrid IMRT (p=۰.۰۱).When compared to IMRT (۰.۹۸۱ ± ۰.۰۱۴) and Hybrid IMRT (۰.۹۷۰ ± ۰.۰۱۳) FiF plans have the lowest CI value of ۰.۹۳۱ ± ۰.۰۲۶. IMRT plans (۰.۰۸۷ ± ۰.۰۲۱) were found to be more homogeneous than other ۲ planning techniques (۰.۱۱۱ ± ۰.۰۱۳ [FiF, p=۰.۰۱۶], ۰.۱۰۷ ± ۰.۰۲۱[hybrid IMRT, p=۰.۰۵۶]). Conclusion: Hybrid IMRT treatment plans for the ca-breast are recommended because they provide superior and similar PTV dose coverage and OAR sparing compared to FiF and IMRT plans. Hybrid IMRT plans feature lower MU and BOT, as well as a smaller low dose volume in comparison to IMRT.

Authors

Subhas Haldar

Department of Physics, Institute of Applied Science and Humanities, GLA University, Mathura-۲۸۱۴۰۶(U.P.), India. Department of Radiotherapy, Saroj Gupta Cancer Centre and Research Institute, Kolkata- ۷۰۰۰۶۳(W.B), India.

DINESH SAROJ

Department of Radiotherapy, Alexis Multispecialty Hospital, Nagpur -۴۴۰۰۳۰, Maharashtra.

Archana Dixit

Department of Mathematics, Institute of Applied Science and Humanities, GLA University, Mathura-۲۸۱۴۰۶(U.P.), India.

Biplab Sarkar

Department of Radiotherapy, Apollo Multispeciality Hospital, Canal Circular Road, Kolkata-۷۰۰ ۰۵۴(W.B), India.

Suresh Yadav

Department of Radiotherapy, Gandhi Medical College, Bhopal- ۴۶۲۰۰۱ (M.P.), India.

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