Speaker
Ehab Attalla
(Children’s Cancer Hospital, National Cancer Institute, Cairo University, Cairo, Egypt)
Description
Abstract:
The goal is to find if there were clear differences between the direct measurement of TMR and that calculated from PDD. The dedicated 6-MV and 10-MV treatments were delivered on Siemens (Siemens Medical Solutions, Malvern, PA) ONCOR Expression linear accelerator with an 82 multi-leaf collimator (MLC)-based Stereotactic radiosurgery and radiotherapy (SRS/SRT) is used in Children’s Cancer Hospital. The dosimetric data were taken using PTW water phantom. The cone sizes vary from 12.5 to 40.0 mm diameter. Mean error ≤ 1.5% was observed between the measured and calculated TMR values for all clinically relevant field sizes and depths. The data Present of no significant differences between TMR values with a p-value < 0.05. The differences between measured and calculated TMR values averaged over depth shows a strong positive correlation with the field size ranging from 1 cm x1cm to 10 cm x10cm.
Keywords: TMR, PDD, Dosimetry
| Institution | Children’s Cancer Hospital,National Cancer Institute, Cairo University |
|---|---|
| Country | Cairo, Egypt. |
Primary author
Ehab Attalla
(Children’s Cancer Hospital, National Cancer Institute, Cairo University, Cairo, Egypt)
Co-authors
Rasha Elawady
(National Cancer Institute, Cairo University)
Shaimaa Shoer
(Children’s Cancer Hospital)
