Abstract：
:Online acquisition of Cherenkov and portal imaging data was combined with a reconstruction scheme called EC3-D, providing a full 3-D dosimetry of megavoltage X-ray beams in a water tank. The methodology was demonstrated and quantified in a single static beam. Furthermore, the dynamics and visualization of the 3-D dose reconstruction were demonstrated with a volumetric modulated arc therapy plan for TG-119 C-Shape geometry. The developed algorithm combines depth dose information, provided by Cherenkov images, with the lateral dose distribution, provided by the electronic portal imaging device. The strength of our approach lies in the acquisition of both imaging data streams with sub-millimeter theoretical resolution at 5-Hz frame-rate, which can be concurrently processed by the fast Fourier transform-based analysis, thus providing means for an efficient real-time 3-D dosimetry.
journal_name
IEEE Trans Med Imagingjournal_title
IEEE transactions on medical imagingauthors
Bruza P,Andreozzi JM,Gladstone DJ,Jarvis LA,Rottmann J,Pogue BWdoi
10.1109/TMI.2017.2717800subject
Has Abstractpub_date
2017-10-01 00:00:00pages
2099-2103issue
10eissn
0278-0062issn
1558-254Xjournal_volume
36pub_type
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