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1	Optimization of a sequential alignment verification and positioning system (SAVPS) for proton radiosurgery Neupane, Mahesh Raj 01 January 2005 (has links) Functional proton-beam stereotactic radiosurgery requires sub-millimeter alignment accuracy. A patient tracking system called Sequential Alignment and Position Verification System (SAVPS) is under development at Loma Linda University Medical Center. An optical positioning system (OPS), manufactured by Vicon Peak, has been chosen to verify the correct alignment of the target with the proton beam axis. The main objective of this thesis is to optimize an existing version of SAVPS by conducting error analysis. An image processing algorithm was developed and applied to estimate the error introduced by the Patient Positioning System (PPS) in order to derive the true error of the SAVPS. Radiosurgery Radiosurgery Quality control Stereoencephalotomy Stereoencephalotomy Quality control Proton beams Therapeutic use Protons Therapeutic use Radiosurgery Instrumentation Radiation dosimetry Brain Tumors Radiotherapy Radioisotope brachytherapy Brain Tumors Radiotherapy Proton beams Therapeutic use Radiation dosimetry Radioisotope brachytherapy Radiosurgery Stereoencephalotomy. Software Engineering