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Clinical Evaluation of VirtualDose - a Software for Tracking and Reporting CTDI, DLP, Organ and Effective Dose for Adult and Pediatric Patient

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A Ding

A Ding1*, Y Gao1, P Caracappa1, D Long2, W Bolch2, B Liu3, M Kalra,3, X Xu1, (1) Rensselaer Polytechnic Institute, Troy, NY, (2) University of Florida, Gainesville, Florida, (3) Massachusetts General Hospital, Boston, MA

TU-G-103-2 Tuesday 4:30PM - 6:00PM Room: 103

Purpose:

To update the development and clinical testing of a new Software as a Service (SaaS) -VirtualDose for tracking and reporting CT doses.
Methods:
Incorporating SaaS technology and the comprehensive original dose data derived from Monte Carlo simulations on a family of adult and pediatric computational phantoms, covering 50th-percentile adults and children at different ages, pregnant females at three gestational stages, and a set of overweight and obese phantoms, VirtualDose is being designed as a Web based CT dose reporting platform. For the client- and server-side scripting, JavaScript, Hypertext Markup Language, Cascading Style Sheets, and C# were used. A JSON (JavaScript Object Notation) is used as a request-response interaction pattern to connect both the client- and server-side. Organ doses and effective doses are computed using ICRP Publication 60 and 103. Patient-specific dosimetry capabilities are included by integrating a DICOM reader function module which could automatically extract dose, patient, and CT scanner (e.g., CTDI, DLP, kVp, mAs, weight, age, gender, etc.) information.

Results:
VirtualDose has been developed as a CT dose reporting SaaS by offering a web-based dynamic user-friendly interface. Based on the user-specified scanning parameters, VirtualDose rapidly report the organ dose data from the remote server-side database and interactively tabulate and plot the results of interest within a web browser. Clinical testing found the dose up to 24% different as compared to those derived from the stylized MIRD-type phantoms. The morbidly obese phantom received up to 60% smaller CT dose than that of the normal weight phantom

Conclusion:
VirtualDose is now available in the following website: http://www.virtualphantoms.com and being tested at more than 20 medical centers nationwide. Using a large library of adult and pediatric phantoms, it provides more accurate dose data and is expected to improve both the accuracy and usability in CT dose reporting in the future.

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