Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients
Mohamed abd elrahman, A., Elshahat, K., Awad, S., Omar, A. (2023). Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients. EKB Journal Management System, 2(2), 295-300. doi: 10.21608/ijtar.2023.203392.1048
afnan mahmoud Mohamed abd elrahman; Khaled Mohamed Elshahat; Sahar M. Awad; Areg E. Omar. "Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients". EKB Journal Management System, 2, 2, 2023, 295-300. doi: 10.21608/ijtar.2023.203392.1048
Mohamed abd elrahman, A., Elshahat, K., Awad, S., Omar, A. (2023). 'Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients', EKB Journal Management System, 2(2), pp. 295-300. doi: 10.21608/ijtar.2023.203392.1048
Mohamed abd elrahman, A., Elshahat, K., Awad, S., Omar, A. Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients. EKB Journal Management System, 2023; 2(2): 295-300. doi: 10.21608/ijtar.2023.203392.1048

Comparison Study of portal dosimetry with PTW 2-D array system for IMRT for specific QA in Breast Cancer patients

International Journal of Theoretical and Applied Research
Volume 2, Issue 2, December 2023, Page 295-300  XML PDF (773.24 K)
Document Type: Original Article
DOI: 10.21608/ijtar.2023.203392.1048
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Authors
afnan mahmoud Mohamed abd elrahman email 1; Khaled Mohamed Elshahatorcid 2; Sahar M. Awadorcid 3; Areg E. Omar4
1biophysics elazhar University for girls faculty science
2Clinical oncology dept. Physics unit Faculty of Medicine Al Azhar university
3Physics department , faculty of science , Al Azhar university
4Physics department, faculty of science Al Azhar university
Abstract
Intensity-modulated radiotherapy (IMRT) technique is the most common radiotherapy technique used to treat cancer, the IMRT and rapid arc give uniform desired dose distribution to the target volume with adequate sparing of the nearby critical structures. In this work, twenty cases of dynamic IMRT plans were selected for the patient-specific QA study using portal dosimetry and a 2-D array system. Pl. Material and Methods in the current study Varian 6MVlinear accelerators unique model at el Hussein hospital the aSi500 electronic portal imaging device (EPID) is a flat panel X-ray imager. The 2-D array system consists of 1020 parallel plate ion chambers. Results and Discussions, We intend to use it for IMRT in pre-treatments to help select Pγ%< 1 point and relevant transition criteria to assess the reproducibility of treatment fractions. Compared to a 2D Array system., although the 2D array, that observation of approximately 1,000 points (200 per beam) is sufficient for a detailed evaluation of portal dose reproducibility across multiple treatment fractions. This type of verification can be performed during treatment by inserting the 2D crosshair into a special device that can track the rotation of the portal view.
Conclusion in comparison the portal dosimetry soft for portal imager device (EPID) has a good result for breast cancer plan evaluation versus 2D array results and agreement with international publish data, in addition, reduces the time for calibration due to there is no need for extended cable for measurement is compared with a 2D array
Keywords
IMRT; portal dosimetry; 2D array; verification
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