Comparison between the Effect of using Similar Wedges and Opposed Wedges in Brain Tumor Cases | ||||
The International Conference on Chemical and Environmental Engineering | ||||
Article 6, Volume 9, 9th International Conference on Chemical & Environmental Engineering, April 2018, Page 97-112 PDF (1.12 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/iccee.2018.34651 | ||||
View on SCiNiTO | ||||
Authors | ||||
Shaimaa G. Ghazy1; Amr Abdelaziz A2; Heba S Ramadan3; Sabbah I. Hammoury4; Yasser I. Khedr5; Metwally A. Kotb3 | ||||
1Radiation Therapy Depart. , Armed Forces Hospital, Alexandria. | ||||
2Oncology Depart. , Faculty of Medicine, Alexandria University. | ||||
3Medical Biophysics Depart. , Medical Research Institute, Alexandria University. | ||||
4Radiation Therapy Depart. , Ayaddi Al Mustakbal Hospital, Alexandria. | ||||
5Physics Depart. , Faculty of Science, Damanhour University. | ||||
Abstract | ||||
Abstract Introduction: Radiotherapy still the most facilitated modality for treatment malignant brain tumors with or without chemotherapy and after surgery or when surgery is impossible. Purpose: Comparison between the effects of three planning techniques with similar, opposed and non-wedges in brain tumor cases. Methods: Twenty patients with brain tumors (Glioblastoma Multiform) of both sexes were enrolled in the study. A LINAC with 6MV photon beam was used to deliver the prescribed dose. The whole brain technique was applied to each patient and the planning was constructed with non-wedges, similar wedges and opposed wedges within 95% to 107% of the prescribed dose as recommended by the RTOG. The considered organs at risk were; Right and Left (eyes, lenses, and optic nerves), optic chiasma and the brain- stem. Results: The results showed significant difference (at the level P<0.05), between the three planning based on the conformity, homogeneity indexes, global max, and the doses received by the OARs. The results were discussed. | ||||
Keywords | ||||
Radiotherapy; Brain tumor; Linac; Wedges; Conformity Index; Homogeneity Index | ||||
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