The IROC Houston Quality Assurance Program: Potential benefits of 3D dosimetry

9th International Conference on 3D Radiation Dosimetry

Followill, D.S.^1 ; Molineu, H.A.^1 ; Lafratta, R.^2 ; Ibbott, G.S.^3

IROC Houston QA Center, MD Anderson Cancer Center, Houston

TX

77030, United States^1

St Lukes Hospital, Houston

TX

77030, United States^2

Department of Radiation Physics, MD Anderson Cancer Center, Houston

TX

77030, United States^3

关键词: 3d dosimeters;    Advanced technology;    Clinical trial;    Dose measurement;    Further works;    Potential benefits;    QA program;    Treatment plans;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/847/1/012029/pdf
DOI  :  10.1088/1742-6596/847/1/012029

来源: IOP

【 摘 要 】

The IROC Houston QA Center has provided QA core support for NCI clinical trials by ensuring that radiation doses delivered to trial patients are accurate and comparable between participating institutions. Within its QA program, IROC Houston uses anthropomorphic QA phantoms to credential sites. It is these phantoms that have the highest potential to benefit from the use of 3D dosimeters. Credentialing is performed to verify that institutions that are using advanced technologies to deliver complex treatment plans that conform to targets. This makes it increasingly difficult to assure the intended calculated dose is being delivered correctly using current techniques that are 2D-based. A 3D dosimeter such as PRESAGE® is able to provide a complete 3D measured dosimetry dataset with one treatment plan delivery. In our preliminary studies, the 3D dosimeters in our H&N and spine phantoms were found to be appropriate for remote dosimetry for relative dose measurements. To implement 3D dosimetry in IROC Houston's phantoms, the benefit of this significant change to its current infrastructure would have to be assessed and further work would be needed before bringing 3D dosimeters into the phantom dosimetry program.