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مقالات فارسیISIکنفرانسهاژورنالها

Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique

محل انتشار: مجله فیزیک و مهندسی پزشکی، دوره: 13، شماره: 3
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 46

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لینک ثابت به این مقاله:
https://civilica.com/doc/1892906

شناسه ملی سند علمی:

JR_JBPE-13-3_003

تاریخ نمایه سازی: 30 دی 1402

چکیده مقاله:

Background: As compared to the flattened photon beam, removing the flattening filter (FF) from the head of a gantry decreases the average energy of the photon beam and increases the dose rate, leading to an impact on the quality of treatment plans.Objective: This study aimed to compare the quality of intensity-modulated radiation therapy (IMRT) treatment plans for esophageal cancer with and without a flattened filter photon beam.Material and Methods: In this analytical study, ۱۲ patients, who had already been treated with a ۶X FF photon beam, were treated based on new IMRT methods using a ۶X the flattening filter-free (FFF) photon beam. Both ۶X FF IMRT and ۶X FFF IMRT plans used identical beam parameters and planning objectives. All plans were evaluated with planning indices and doses for organs at risk (OARs).Results: Insignificant dose variation was for HI, CI, D۹۸%, and V۹۵% between FF and FFF photon beam IMRT plans. FF-based IMRT plan delivered a ۱۵.۵۱% and ۱۱.۲۷% higher mean dose to both lungs and heart than the FFF plan, respectively. The integral dose (ID) for the heart and lungs was ۱۱.۲۱% and ۱۵.۵۱%, respectively, less in the IMRT plan with an FFF photon beam. Conclusion: In contrast to the FF photon beam, a filtered photon beam-oriented IMRT plan provides significant OAR sparing without losing the quality of the treatment plan. High monitor units (MUs), low ID, and Beam on Time (BOT) are major highlights of the IMRT plan with FFF beam.

کلیدواژه ها:

Intensity Modulated ، Linear accelerator ، Radiotherapy ، Photons ، Radiotherapy Planning ، Radiotherapy ، Conformal

نویسندگان

Dinesh Kumar Saroj

Department of Radiotherapy, Alexis Multispecialty Hospital Nagpur-۴۴۰۰۳۰ (Maharashtra), India

Suresh Yadav

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

Neetu Paliwal

Department of Science, Rabindranath Tagore University, Bhopal, Madhya Pradesh, India

Subhas Haldar

Department of Radiotherapy, Saroj Gupta Cancer Center and Research Institute, Kolkata-۷۰۰۰۶۳ (West Bengal), India

Amol Jagtap

Department of Radiotherapy, Alexis Multispecialty Hospital Nagpur-۴۴۰۰۳۰ (Maharashtra), India

Arvind Kumar

Department of Radiation Oncology, All India Institute of Medical Sciences (AIIMS), Rishikesh-۲۴۹۲۰۳ (U.K.), India

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