SU‐E‐T‐729: A Superficial Information Management and Calculation System

Purpose: Superficial low energy X‐ray treatments are widely available in many cancer centers for skintumours. In comparison with the low energy electron treatmentsdelivered by modern Linacs, it has the advantage of easy setup, less resource intensive, and cost effective, but still achieves the same purpose of tumour control or cure. For some tumour sites, it is a better choice than Linac. To our knowledge, however, there is no suitable software package for superficial treatment management. Dose calculations are mostly based on home made calculators and independent check is not always available. For treatment safety and treatment management, we developed a superficial calculation and information management system. Methods: This program is a web based application in a server‐client infrastructure. The server provides web and database services for client access and data storage. Any network device with a modern web browser can launch the application through a webpage. Results: Application access is restricted to authorized users only. At the front end (client side), physics group has the permission to perform system commission. Physicians and therapists can perform patient information management, dose prescription and treatment calculation. At the back end (server side), the application is database driven. All measurement, patient and treatment information are stored in a relational database. Users can calculate doses for all biological tissues provided in AAPM TG61 with field diameter <20cm. Dose calculation is based on the in‐air method (40–300kV tube potential) of AAPM TG61. Because of the lower calculation intensity requirement, all computations are on the server side. This makes the application's availability for even handheld devices. Conclusions: A web based superficial dose calculation and management system has been developed. This system can be used either as the primary system or as a QA tool for independent check of the calculating results.