سامانه مدیریت نشریات علمی دانشگاه علوم پزشکی مشهد

Erraoudi, Morad, El Bouchiti, Kaoutar, Herrassi, Yassine, El ghalmi, mohamed, Raoui, Yassir, Bouzekraoui, Youssef, BENTAYEB, FARIDA, Drissi, Lalla Btissam. (1403). Solution for Processing Pelvic Bone Metastases with Halcyon TM 2.0 on Lateral and Longitudinal Isocenters Treatment Plans Using the VMAT Technique: A Comparative Study. , 21(4), 228-236. doi: 10.22038/ijmp.2023.70105.2234
Morad Erraoudi; Kaoutar El Bouchiti; Yassine Herrassi; mohamed El ghalmi; Yassir Raoui; Youssef Bouzekraoui; FARIDA BENTAYEB; Lalla Btissam Drissi. "Solution for Processing Pelvic Bone Metastases with Halcyon TM 2.0 on Lateral and Longitudinal Isocenters Treatment Plans Using the VMAT Technique: A Comparative Study". , 21, 4, 1403, 228-236. doi: 10.22038/ijmp.2023.70105.2234
Erraoudi, Morad, El Bouchiti, Kaoutar, Herrassi, Yassine, El ghalmi, mohamed, Raoui, Yassir, Bouzekraoui, Youssef, BENTAYEB, FARIDA, Drissi, Lalla Btissam. (1403). 'Solution for Processing Pelvic Bone Metastases with Halcyon TM 2.0 on Lateral and Longitudinal Isocenters Treatment Plans Using the VMAT Technique: A Comparative Study', , 21(4), pp. 228-236. doi: 10.22038/ijmp.2023.70105.2234
Erraoudi, Morad, El Bouchiti, Kaoutar, Herrassi, Yassine, El ghalmi, mohamed, Raoui, Yassir, Bouzekraoui, Youssef, BENTAYEB, FARIDA, Drissi, Lalla Btissam. Solution for Processing Pelvic Bone Metastases with Halcyon TM 2.0 on Lateral and Longitudinal Isocenters Treatment Plans Using the VMAT Technique: A Comparative Study. , 1403; 21(4): 228-236. doi: 10.22038/ijmp.2023.70105.2234

Solution for Processing Pelvic Bone Metastases with Halcyon TM 2.0 on Lateral and Longitudinal Isocenters Treatment Plans Using the VMAT Technique: A Comparative Study

Iranian Journal of Medical Physics
دوره 21، شماره 4، مهر و آبان 2024، صفحه 228-236    اصل مقاله (1.78 M)
نوع مقاله: Original Paper
شناسه دیجیتال (DOI): 10.22038/ijmp.2023.70105.2234
نویسندگان
Morad Erraoudi1؛ Kaoutar El Bouchiti2؛ Yassine Herrassi3؛ mohamed El ghalmi4؛ Yassir Raoui5؛ Youssef Bouzekraoui* 6؛ FARIDA BENTAYEB7؛ Lalla Btissam Drissi8
1Department of physics, Faculty of sciences, University Mohammed V in Rabat, Morocco
2Mohammed VI University of Health Sciences, Casablanca, Morocco
3Iba Dosimetry Schwarzenbruck, Germany
4Faculty of Sciences, LPHE-M&S, Mohammed V University, Rabat
5Université Mohammed V de Rabat
6Hassan First University of Settat, High Institute of Health Sciences, Laboratory of Sciences and Health Technologies, Settat, Morocco
7Departement of Physics, Laboratory of High Energy Physics, Modelling and Simulation, Faculty of Science, Mohammed V Agdal University, Rabat, Kingdom of Morocco
81Department of physics, Faculty of sciences, University Mohammed V in Rabat, Morocco
چکیده
Introduction: Treatment of pelvic bone metastases using a Halcyon machine, mostly presents some difficulties to plan, especially for big volumes because of the machine field size. The purpose of this study is to use two lateral isocenters in the treatment of pelvic bone metastases with the Halcyon machine, in order to overcome its limitations in treating large volumes.
Material and Methods: We report a retrospective study of 8 patients who received radiotherapy for pelvic bone metastases, all treated by two different VMAT techniques. The first technique was performed by two longitudinal isocenters (LONI) and the second by two lateral isocenters (LATI) respecting the authorized distance longitudinally between two isocenters which must be less than 8 cm. For each isocenter, two opposite arcs are used for all treated patients.
Results: The plans conformity index (CI) assessment shows no difference between the two used techniques for all the treated patients. Remarkable coverage of PTVs was obtained in lateral isocenter (LATI) with 96.2% compared to 94%.6% for LONI, as well as the maximum dose which was 109.4% for LATI versus 112.3% for LONI. However, the Conformation number (CN) that takes into account both healthy tissue and organ at risk protection was improved by 7.3% by using LATI.
Conclusion: A very satisfactory result has been obtained in the treatment of pelvic bone metastases with LATI. With this technique, we can exceed the limits of the Halcyon machine and process larger volumes.
کلیدواژه‌ها
VMAT؛ Pelvic؛ Radiotherapy؛ PTV؛ Halcyon Machine
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