3D EPID Dose Reconstruction for Radiation Therapy
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Dosimetry Check is software that uses the existing hardware on linear accelerators to reconstruct doses delivered to patients. This is the most complete method of Quality Control available. Dosimetry Check works in 3 main steps listed below. (Note: Steps for TomoTherapy are slightly different)
An Illustartion of an image with pencil beams projected onto it. An IMRT Image from an EPID (with Spinal Cord avoidance)
Step 1 Dosimetry Check uses the Electronic Portal Imaging Device (EPID) to capture an image of the dose that is delivered either before treatment or “in transit” (during treatment). Dosimetry Check can also use ion chamber arrays or diode arrays for image capture.
Step 2 Dosimetry Check then converts the EPID image to an “in air fluence map” that is projected onto the patient to compute the dose.
Step 3 Dosimetry Check then compares the reconstructed dose to the dose the planning system intended to deliver.
A more detailed description on How it Works A computed dose by Dosimetry Check (magenta) compared directly to an ADAC IMRT planning system (green) with inhomogeneity corrections on: courtsey of Dr. Tianyou Xue. CE Mark FDA Cleared Home How it works Papers and Patents Who we are Contact
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