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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 3 of 3 (0.111 seconds)

Spelling suggestions: "subject:"radiosurgery instrumentation"" "subject:"radiosurgery lnstrumentation""

1

Cutout Manager : a stand-alone software system to calculate output factors for arbitrarily shaped electron beams using Monte Carlo simulation

Last, Jürgen. January 2008 (has links)
In external electron beam therapy arbitrarily shaped inserts (cutouts) are used to define the contours of the irradiated field. This thesis describes the implementation and verification of a software system to calculate output factors for cutouts using Monte Carlo simulations. The design goals were: (1) A stand-alone software system running on a single workstation. (2) Task oriented graphical user interface with shape input capability. (3) Implementation on Mac OS XRTM (10A.x Tiger). (4) CPU multicore support by job splitting. (5) EGSnrc (Patch level V4-r2-2-5) for particle transport and dose scoring. (6) Validation for clinical use. / The system, called Cutout Manager, can calculate output factors with 1% statistical error in 20 minutes on Mac Pro computer (Intel XeonRTM, 4 cores). When the BEAMnrc linac model correctly reproduces percentage depth doses in the buildup region and around R100, calculated and measured output factors are in good agreement with precision measurements of circular cutouts at 100 cm source-to-surface distance (SSD) and extended SSD. Cutout Manager simulations are consistent with measurements of clinical cutouts within a 2% error margin.
Radiosurgery -- instrumentation.
Particle Accelerators.
Monte Carlo Method.
Software Design.
2

Cutout Manager : a stand-alone software system to calculate output factors for arbitrarily shaped electron beams using Monte Carlo simulation

Last, Jürgen. January 2008 (has links)
No description available.
Software Design.
Radiosurgery -- instrumentation.
Particle Accelerators.
Monte Carlo Method.
3

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

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