Dosimetry Check IGQA with Exit Dose
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The World’s First Absolute 3D Volumetric IMRT QA System using EPID and 2D Arrays
Why perform 2D single plane IMRT QA for 3D complex treatments?
Presently all QA analysis is calculated on a single plane not in or on the patient volume. The assumption being that acceptable measured results on a single plane equate to an approved treatment for target volume and critical structures. Experience has now shown that this is not necessarily true.
Dosimetry Check works with any EPID and any treatment planning system to provide a volumetric measurement for IMRT QA. Unlike other systems which use single plane QA Analysis, Dosimetry Check uses the patient CT data set as a Phantom. This is done by converting each beam’s 2D image information to a Measured Calibrated Fluence which is then projected onto the patient’s CT data set. In this way the delivered dose is reconstructed with the same CT data set as the original treatment plan thus allowing for planned and measured dose comparison. Plan comparison includes isodose overlays, dose profiles, point doses, dose differentials, 3D surface doses, 3D gamma analysis, Gamma Volume Histogram (GVH) analysis, and Dose Volume Histogram (DVH) analysis.
In addition, CIVCO's Exit Dose option has recently been 510k approved by the FDA and CE marked. CIVCO’s Exit Dose module is the first commercially available product of its kind, though Exit Dose technology (also known as Transit Dose) has been studied and used academically for many years.
Some of the benefits and advantages of the Dosimetry Check technology over other phantom based systems include:
*Absolute Dose Calculation
*Works with any RTP System
*Supports VMAT and Rapid Arc™
*Works with Elekta, Siemens and Varian’s Portal Visions R and E Arms
*Measured Dose Verification using Patient CT Data Set
*Structured Analysis: 3D Dose Volume (DVH) and Gamma Volume Histograms
*Printed numeric reports of 3D Dose Volume Histograms (DVH) for any structures
*Actual 3D Absolute Dose (measured analysis) vs. 3D predicted dose from any plan
*Also works with any linear ion chamber or diode array to achieve full 3D analysis
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DOSIMETRY CHECK IMRT QA PACKAGE WITH COMPUTER
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DOSIMETRY CHECK IMRT QA PACKAGE ONLY
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DOSIMETRY CHECK, ADDITIONAL SITE LICENSE SOFTWARE
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DOSIMETRY CHECK, ADDITIONAL SITE LICENSE WORKSTATION
