Study of use of a-Si EPID as imaging device iniMRTQA
Dina Mohamed Abdel Aziz Ibrahim;
Abstract
From this study one may conclude the following:
• The time required to perform dose reconstruction with the EPID (iViewGT, release 3.2) is probably the same as the established method using film. Yet, EPID as QA device has advantages over film QA in that it is linear, more reproducible, and eliminates fiJm problems, with scanners.
• The total annual cost of imaging with film is higher than that using EPID concerning JMRT QA.
• EPID (iViewGT, release 3.2) can replace the ionization chamber for measuring dose for the studied field sizes at the isocenter at IOcm depth in a 20cm thick PMMA slab phantom at SSD90cm after correction for PSF and DF.
• From the study the combination between iViewGT and Omni Pro software with the used corrections can be applied and provides an accurate method to verify the dose of IMR T fields in two dimensionS inside a homogenous slab phantom.
• The EPID is an accurate and fast alternative to film for field-by field pretreatment
verification of IMRT inside a phantom.
• The time required to perform dose reconstruction with the EPID (iViewGT, release 3.2) is probably the same as the established method using film. Yet, EPID as QA device has advantages over film QA in that it is linear, more reproducible, and eliminates fiJm problems, with scanners.
• The total annual cost of imaging with film is higher than that using EPID concerning JMRT QA.
• EPID (iViewGT, release 3.2) can replace the ionization chamber for measuring dose for the studied field sizes at the isocenter at IOcm depth in a 20cm thick PMMA slab phantom at SSD90cm after correction for PSF and DF.
• From the study the combination between iViewGT and Omni Pro software with the used corrections can be applied and provides an accurate method to verify the dose of IMR T fields in two dimensionS inside a homogenous slab phantom.
• The EPID is an accurate and fast alternative to film for field-by field pretreatment
verification of IMRT inside a phantom.
Other data
| Title | Study of use of a-Si EPID as imaging device iniMRTQA | Other Titles | دراسة استخدام نظام التصوير (a-SiEPID ) فى توكيد الجودة (َQA) ggub) للعلاج الاشعاعى متغير الشدة (IMRT) | Authors | Dina Mohamed Abdel Aziz Ibrahim | Issue Date | 2010 |
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