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Saroj, Dinesh Kumar, Yadav, Suresh, Paliwal, Neetu, Haldar, Subhas, Jagtap, Amol, Kumar, Arvind. (1402). Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique. سامانه مدیریت نشریات علمی, 13(3), 227-238. doi: 10.31661/jbpe.v0i0.2108-1381
Dinesh Kumar Saroj; Suresh Yadav; Neetu Paliwal; Subhas Haldar; Amol Jagtap; Arvind Kumar. "Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique". سامانه مدیریت نشریات علمی, 13, 3, 1402, 227-238. doi: 10.31661/jbpe.v0i0.2108-1381
Saroj, Dinesh Kumar, Yadav, Suresh, Paliwal, Neetu, Haldar, Subhas, Jagtap, Amol, Kumar, Arvind. (1402). 'Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique', سامانه مدیریت نشریات علمی, 13(3), pp. 227-238. doi: 10.31661/jbpe.v0i0.2108-1381
Saroj, Dinesh Kumar, Yadav, Suresh, Paliwal, Neetu, Haldar, Subhas, Jagtap, Amol, Kumar, Arvind. Assessment of Treatment Plan Quality between Flattening Filter and Flattening Filter Free Photon Beam for Carcinoma of the Esophagus with IMRT Technique. سامانه مدیریت نشریات علمی, 1402; 13(3): 227-238. doi: 10.31661/jbpe.v0i0.2108-1381

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

Journal of Biomedical Physics and Engineering
دوره 13، شماره 3، شهریور 2023، صفحه 227-238    اصل مقاله (1.61 M)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2108-1381
نویسندگان
Dinesh Kumar Saroj* 1، 2؛ Suresh Yadav3؛ Neetu Paliwal2؛ Subhas Haldar4؛ Amol Jagtap1؛ Arvind Kumar5
1Department of Radiotherapy, Alexis Multispecialty Hospital Nagpur-440030 (Maharashtra), India
2Department of Science, Rabindranath Tagore University, Bhopal, Madhya Pradesh, India
3Department of Radiotherapy, Gandhi Medical College, Bhopal-462001 (M.P.), India
4Department of Radiotherapy, Saroj Gupta Cancer Center and Research Institute, Kolkata-700063 (West Bengal), India
5Department of Radiation Oncology, All India Institute of Medical Sciences (AIIMS), Rishikesh-249203 (U.K.), India
چکیده
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, 12 patients, who had already been treated with a 6X FF photon beam, were treated based on new IMRT methods using a 6X the flattening filter-free (FFF) photon beam. Both 6X FF IMRT and 6X 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, D98%, and V95% between FF and FFF photon beam IMRT plans. FF-based IMRT plan delivered a 15.51% and 11.27% higher mean dose to both lungs and heart than the FFF plan, respectively. The integral dose (ID) for the heart and lungs was 11.21% and 15.51%, 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.
کلیدواژه‌ها
Intensity Modulated؛ Linear Accelerator؛ Radiotherapy؛ Photons؛ Radiotherapy Planning؛ Radiotherapy, Conformal
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