Title page for ETD etd-1114102-125456

Type of Document Master's Thesis
Author Wu, Junqing
Author's Email Address jwu3@lsu.edu
URN etd-1114102-125456
Title Implementation of an Integrated Quality Assurance Program for a CT-TPS Process
Degree Master of Science (M.S.)
Department Physics and Astronomy
Advisory Committee
Advisor Name Title
Oscar Hidalgo Committee Chair
Erno Sajo Committee Member
Mark Williams Committee Member
Sheldon Johnson Committee Member
Thomas Kirby Committee Member
  • treatment planning system
Date of Defense 2002-11-08
Availability unrestricted
Systematic constancy and accuracy of a treatment planning system (TPS) are crucial for the entire radiation treatment planning process (TPP). The Quality Assurance (QA) of individual components does not necessarily lead to satisfying performance of the whole process due to the possible errors introduced by the data transfer process between components and other fluctuations. However, most of current QA for TPS is confined to the treatment planning computers. In this study, a time efficient and integrated CT-TPS QA procedure is presented, which starts at the beginning of the TPS input --- Computer Tomograhpy (CT). The whole QA procedure is based on the concept of simulating a real patient treatment. Following the CT scan of a head phantom with geometrical objects, a set of reference treatment plans for each accelerator, with all energy beams included, were established. Whenever TPS QA is necessary, the same procedure is repeated and a QA plan is produced. Through the comparison of QA plan with the reference plan, major systematic errors can be found easily and quickly. This method was also applied to VariSeed and PLATO Brachytherapy treatment planning systems.

Moreover, if any error is detected in the system, TPS is broken into several parts and individual tests are also set up.

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