Monday, 22 May 2000 Focus Session: Inverse Planning (Steve Webb).- 1. Inverse-planning for IMRT with a robotically-mounted linac: parameterization of this ultimate(?) IMRT technique.- 2. Tomotherapy: Optimal coplanar radiotherapy.- 3. DMLC IMRT Is Sufficient for All Clinical Purposes.- 4. Complex IMRT increases the potential for dose misadministration, and simple planning and delivery methods can achieve the same results with reduced risk of patient injury.- Session: Optimization/Inverse Planning 1.- 1. Using a dose-volume feasibility search algorithm for radiation treatment planning.- 2. Dose-volume constrained radiotherapy optimization for a clinical treatment planning system.- 3. IMRT optimization based on the generalized equivalent uniform dose (EUD).- 4. Investigation of ROC analysis for inverse treatment planning evaluation.- 5. The use of Maximum Likelihood Estimator and the Dynamically Penalized Likelihood methods in inverse radiation therapy planning.- 6. A multicriteria optimization approach for inverse radiotherapy planning.- 7. Computer-assisted selection of importance factors in inverse planning.- 8. Dose-Based Conformal Field Shaping using Automated Optimization.- 9. Direct computation of the "step-and-shoot" IMRT plan.- 10. Beam orientations in IMRT: to optimize or not to optimize?.- 11. Inverse Treatment Planning for Gamma Knife Radiosurgery.- 12. Heuristics for conventional planning.- P1. Hyperion - An integrated IMRT planning tool.- P2. ORBIT: Optimization of Radiation therapy Beams by iterative Techniques, a new optimization code.- P3. The effect of PTV size on PTV dose homogeneity.- P4. Integration of the KonRad inverse planning tool into the iSis3D treatment planning system.- P5. The influence of dose matrix and voxel dimensions for the dose calculation on inverse treatment planning for stereotactic radiosurgery.- P6. Cases studies in tomotherapy optimization: Breast, Prostate, Mesothelioma and Nasopharyngeal treatments.- P7. Method of normalising and sensitivity to setup variations of IMRT treatment plans.- P8. Influence of the sampling of dose and beams spaces on the ill conditioning and on quality of inverse dose distribution for IMRT.- Session: Computer Science.- 1. Formal Safety Analysis of the Control Program for a Radiation Therapy Machine.- 2. Design Considerations for Intensity Modulated Proton Therapy Treatment Planning.- 3. A delineation system for N modalities - software aspects.- 4. A new design for a DICOM-3 server.- 5. Implementing DICOM RT in a radiotherapy department.- 6. The design and implementation of a multi-center volumetric and dosimetric database.- 7. Network-wide application sharing as part of an electronic patient referral system.- 8. Wide Area Networking for Radiotherapy Services.- 9. A Deformable Template Approach to Registration of Serial CT Studies for Dose Planning in Intracavitary Brachytherapy.- 10. Image Fusion in Radiotherapy.- 11. Automated image registration using mutual information for both affine and thin-plate spline geometric transformations.- 12. Prostate Boundary Detection and Visualization in TRUS Images.- P9. Multimodality image fusion and localisation environment for radiosurgery treatments of large AVMs.- P10. Computerized Segmentation of Clustered Seeds in Prostate Brachytherapy.- P11. A quality control of a virtual simulation system including an inverse DRR software.- P12. Image fusion using mediated data displays.- P13. A new approach for improved tumor volumetry.- P14. Digital data exchange for multi-institutional clinical trials in 3D conformal radiation therapy and prostate brachytherapy.- P15. The creation of radiotherapy archive using Internet technology.- Focus Session: Monte Carlo-Based Routine Clinical Treatment Planning (David Rogers).- 1. Questions for comparison of clinical Monte Carlo codes.- 2. MCDOSE - A Monte Carlo Dose Calculation Tool for Radiation Therapy Treatment Planning.- 3. VMC++, a fast MC algorithm for Radiation Treatment planning.- 4. Performance benchmarks of the MCV Monte Carlo system.- Session: Computer Science/Imaging.- 1. Computer Automated Quantification of Respiratory Motion in a Fluoroscopic Movie.- 2. The use of artificial neural networks in mammographie screening.- 3. Imaging in situ activated 15O to study tumor hypoxia.- 4. Application to Lung Conformal Radiotherapy of a Spect and Computerised Tomography (C.T.) Image Registration Method.- 5. FDG-PET Imaging for Radiation Therapy in Head and Neck Cancer.- 6. Feedback and Interlock Triggering for Real-Time IMRT Verification.- 7. Dynamic Opto-Electronic Body Surface Sensing & Computerised Surface Matching for Patient Positioning & Monitoring in Radiotherapy.- 8. Monte Carlo evaluation of a highly efficient photon detector for tomotherapy.- 9. A 3D CT software platform for radiotherapy.- P16. Magnetic resonance spectroscopy guided integrated boost irradiation for high grade gliomas using IMRT.- P17. Therapy A full 3D verification technique for static field IMRT.- Tuesday, 23 May 2000 Focus Session: IMRT Delivery: Theoretical Concepts and Clinical Reality (Arthur Boyer, Wilfried DeNeve).- 1. IMRT by Dynamic MLC.- 2. Intensity-Modulated ARC Therapy: Clinical Implementation and Experience.- 3. Clinical Implementation of IMRT by MLC Technology.- 4. Quality Assurance of IMRT.- Session: IMRT Delivery Techniques.- 1. Monte Carlo studies of energy modulated radiotherapy.- 2. Modulated electron beams for treatment of breast cancer.- 3. Monte Carlo Simulations of Multileaf Collimated Electrons.- 4. Applicability of a multi-hole collimator for scanned photon beams: A Monte Carlo study.- 5. Slide and Shoot: A new method for MLC delivery of IMRT.- 6. Applicator-Guided Intensity Modulated Radiation Therapy: A New Approach to Treating Cervical Cancer.- 7. Application of modifiers for intensity modulated photon fields.- 8. Delivery of Multiple IMRT Fields Using a Single Physical Attenuator.- 9. Application of Enhanced Dynamic Wedge to Stereotactic Radiotherapy.- 10. An improved technique for tangential breast irradiation applying MLC field shaping and inverse planning.- 11. Eliminating complex treatment setup for intact breast or postmastectomy treatment with intensity modulated radiation therapy.- 12. Clinical implementation of IMRT for customized compensation using dynamic multileaf collimation.- P18. Assessment of Treatment Techniques and Collimation in Conformal Stereotactic Radiosurgery and Radiotherapy.- P19. General Anatomy Based Segmentation for Intensity Modulated Radiotherapy of Head and Neck Cancer.- P20. The use of compensators and multiple static fields for IMRT of the breast.- P21. A mixed integer programming approach to the multileaf collimator problem.- P22. Comparison of Leaf Sequencing Techniques: Dynamic vs. Multiple Static Segments.- P23. Evaluation and quality control of a compensation system for intensity-modulated radiotherapy.- P24. IMRT in routine - experiences from a feasibility study.- Session: Dose Calculation & Biological Models.- 1. An optimized convolution/superposition based algorithm for dose calculation with photon beams.- 2. A multigrid method for accelerating superposition dose calculations.- 3. Use of Collapsed Cone Convolution for an Initial Investigation of Portal Dose Image Prediction.- 4. Modelling of photon beam spectral variations.- 5. Obtaining realistic spectra of photon and electron beams.- 6. A measured Data Set for evaluating electron beam dose algorithms.- 7. The importance of the dose calculation model on plan evaluation for IMRT.- 8. Biological optimization including both the normal and tumor tissues in the target volume.- 9. Limitations in using dose-volume histograms for radiotherapy dose optimization.- 10. Development of software to calculate the biological effect of different fractionation schedules in model tumours.- 11. A Novel Radiobiological Cell Cycle Model.- 12. Estimation of complication probabilities after radiosurgery of AVM patients using a biological model.- P25. Implementation of EvTool, a quantitative and radiobiological evaluation system in a commercial RTPS.- P26. Computer-aided side effect monitoring.- P27. A Deterministic Photon and Electron Transport Algorithm for Radiation Dosimetry.- P28. Siemens virtual wedge: A dose calculation model with constraint checking.- P29. Development of On-line Beam Data Acquisition and Treatment Planning Software.- P30. Influence of the dose response model for normal tissue on the dose distribution in IMRT.- P31. Application of Biological Modeling to Facilitate the Transition from Conventional to Intensity Modulated Radiation Therapy Treatment.- P32. Phoenix 2000, A 3D conformal Treatment Planning System.- Wednesday, 24 May 2000 Focus Session: Quality Assurance in Treatment Verification of Conformal Radiation Therapy (Fridtjof Nusslin).- 1. Progress in portal imaging techniques.- 2. On the use of electronic portal imaging for treatment verification.- 3. Computational methods for treatment verification: the Full Monte Carlo contribution.- 4. Quality Management in Conformal Radiotherapy.- Session: IMRT Delivery & Verification.- 1. Improving dosimetric accuracy of a dynamic MLC technique.- 2. Dynamic multileaf collimation and three-dimensional verification in IMRT.- 3. Delivery and dosimetry verification in IMRT.- 4. Dosimetry of gated Intensity Modulated Radiotherapy.- 5. The Dosimetric Consequences of Patient Movement on Three Classes of Intensity-Modulated Delivery Techniques in Breast Radiotherapy.- 6. Monitor Units Verification Calculation in IMRT as a Patient Specific Dosimetry.- 7. Database energy fluence verification and the importance of on-board CT imaging in dose reconstruction.- 8. Delivery modification as an alternative to patient repositioning in tomotherapy.- 9. Optimized Decomposition of Virtual Micro Intensity Maps.- 10. Fluence segmentation for micro intensity modulated radiotherapy with a miniature multileaf collimator.- 11. The effects of beamlet size on IMRT optimization.- 12. Reduction of Treatment Time in IMRT Step and Shoot Irradiations by Means of a Changed Fractionation Scheme.- P33. Dynamic MLC delivered IMRT: verification using Polyacrylamide gel dosimetry.- P34. Tomographic Verification of Tomotherapy - Before, During and After Treatment.- P35. Computer simulated patient motion and setup uncertainties in intensity modulated radiotherapy.- Session: Other Treatment Modalities.- 1. Intensity modulated proton therapy: A first clinical example.- 2. Physical and Biological Dose Distribution Due to Primary Protons and Secondary Particles from Nuclear Interactions.- 3. A new planning tool for IMRT treatments: implementation and first application for proton beams.- 4. OCTOPUS, a planning tool for proton therapy of eye tumours.- 5. Patient setup for proton radiotherapy using digital x-ray images of implanted fiducials.- 6. VolEye - An application for interactive 3D-visualization and treatment planning of intraocular tumors.- 7. An improved 3D-Model for a Therapeutic Carbon Beam.- 8. The depth-dose profile analyzer: a dosimetry system for fast measurement of 3D depth-dose profiles in charged-particle tumor therapy with scanning techniques.- 9. An Integrated Treatment Delivery System for SRS and SRT.- 10. Monte Carlo for the Cyberknife.- 11. Investigations on medical aspects of CoRA - A new Cobalt Radiotherapy Arrangement (feasibility study).- 12. Planning and Optimisation of Stereotactic Laser-Neurosurgery.- P36. Automated Analysis of Film Checks for QA of Stereotactic Treatment Setup.- P37. Treatment planning for ion radiotherapy.- P38. Determination of dose-volumes parameters to characterise the conformity of stereotactic treatment plans.- P39. BANGTM polymer gels applied to the verification of conformal heavy ion radiotherapy.- P40. Correlation between CT number and water-equivalent thickness for heavy charged particles.- P41. Parameter adjustment of a proton pencil beam algorithm using experimental data from complex compensators.- P42. The "X-Sting": a new PC-based, 3D stereotactic treatment planning system.- Session: Quality Assurance.- 1. Automated image based quality assurance for medical linear accelerators.- 2. A multi-purpose quality assurance tool for MLC-based IMRT.- 3. Monitor Unit Calculation for Intensity Modulated Photon field.- 4. Image Correlation and In Vivo Dosimetry in IMRT.- 5. On the chemical stability of 3D monomer/polymer gel dosimetry.- 6. An initial investigation of Optical CT and MR scanning of gel dosimeters.- 7. Analyzing dose distributions from a treatment planning system, MC simulations and polymer gel measurements.- 8. Automated verification of 3D-Conformal and IMRT treatment planning using polymer gels.- 9. Future concepts for IMRT verification techniques derived from experiences gained in scanning heavy ion radiotherapy.- P43. A software system for patient-specific quality control of intensity-modulated radiation treatments by Fricke-gel.- P44. A simple and robust method for clinical implementation of midplane transit dosimetry using diodes and portal films.- P45. Comparison of MRI-Interrogated Fricke and BANG Gel Proton Dose Visualisation for a Therapy Cyclotron.- P46. Concave Dose Distributions in Dynamic Arc Radiosurgery.- Session: Monte Carlo 1.- 1. Is Monte Carlo noise removal feasible?.- 2. Implementation of several variance reduction techniques into the XVMC Monte Carlo algorithm for photon beams.- 3. Parallel processing of radiotherapy Monte Carlo simulations on a remote Beowulf cluster.- 4. A Scaling Method for Multiple Source Models (SMSM).- 5. Effect of CT Streaking Artefacts in Monte Carlo Dose Distributions for Head and Neck Cancer.- 6. Peregrine: Bringing Monte Carlo based Treatment Planning Calculations to Today's Clinic.- 7. Modification of a virtual source model for Monte Carlo based IMRT verification.- 8. IMRT with Monte Carlo dose computation: what is the benefit?.- 9. The impact of Monte Carlo dose calculations on treatment outcomes.- P47. On the evaluation and implementation of efficient sampling algorithms for Monte Carlo based dose calculation.- P48. Electron beam commissioning for Monte Carlo Dose Calculation.- P49. Modeling and Commissioning of Clinical Photon Beams for Monte Carlo Treatment Planning.- P50. Simulation of Beam Modifiers for Monte Carlo Treatment Planing.- P51. Speeding up Monte Carlo simulation of electron cut-outs in treatment planning.- P52. Influence of tissue composition on the results of Monte Carlo simulations for patient dose calculations.- Session: Monte Carlo 2.- 1. A virtual linear accelerator for verification of treatment planning systems.- 2. A Monte Carlo method for commissioning electron beams.- 3. Adding a Dynamic Swing to Monte Carlo simulation - Modeling Dynamic Jaw Motion Using Three Sampling Techniques.- 4. Dynamic-MLC Modeling for Monte Carlo dose calculations.- 5. Considerations for modeling MLCs with Monte Carlo techniques.- 6. Monte Carlo simulation of wax compensating filters for radiotherapy of the head and neck.- 7. Omega Monte Carlo verification of dosimetric data for Gamma Knife.- 8. A Monte Carlo study of backscatter in the monitor ion chamber for clinical photon and electron beams.- 9. Monte Carlo Simulation of the effective point of measurement of the Markus chamber for electrons, the upright PinPoint chamber for photons, and other chambers.- Session: Brachytherapy.- 1. A Fast Dose Calculation Algorithm for Deformable Liquid-Filled Brachytherapy Applicators with Low Energy Photon Emitting Radionuclides.- 2. Accounting for heterogeneities and shields in brachytherapy dose calculation by use of collapsed cone superposition.- 3. Planning of Cardiovascular Brachytherapy.- 4. An Iterative Mixed-integer Programming Approach to Brachytherapy Treatment Plan Optimization for Prostate Cancer.- 5. Database infrastructure for multi-institutional clinical trials in 3D conformal radiotherapy and prostate brachytherapy.- 6. Evaluation of the Treatment Planning of Interstitial Hyperthermia of Glioblastomas.- 7. Monte Carlo dosimetry for intravascular brachytherapy.- 8. Monte Carlo Investigation of Typical and Potential Sources for Endovascular Brachytherapy.- 9. Derivation of dosimetry data for brachytherapy sources using Monte Carlo for primary and scatter dose separation.- P53. Dose-Area Analysis for Endovascular Brachytherapy.- P54. The application of GEANT4 simulation code to the verification of a brachytherapy calibration procedure.- P55. Autoreconstruction of Catheters in CT Based Brachytherapy Treatment Planning.- P56. EGS4 Energy Deposition Kernels at Low Photon Energy including the Molecular Coherent Scattering Form Factor.- Thursday, 25 May 2000 Focus Session: New Approaches in Patient Positioning - Strengthening a Weak Chain Link (Gig Mageras).- 1. Advances in Patient Immobilisation and Positioning Techniques.- 2. Interventional strategies to counter the effects of inter-fraction treatment variation.- 3. Interventional strategies for reducing respiratory-induced motion in external beam therapy.- 4. Ultrasound for Patient Positioning in Radiation Therapy.- Session: Optimization/Inverse Planning 2.- 1. Treatment strategy for daily image feedback adaptive radiotherapy.- 2. A Generalization of adaptive Radiotherapy and the registration of deformable dose distributions.- 3. Statistical control applications for dynamic refinement.- 4. Clinical applications of combining IMRT with electron beam.- 5. A comparison of IMRT planning systems in the treatment of colon-rectal cancer.- 6. A Clinically Oriented Inverse Planning Implementation.- 7. Incorporating clinical factors in plan optimization.- 8. Microboost treatment of prostate tumors.- 9. Application of some regularization methods to the radiosurgery inverse problem.- 10. Modelling the Effects of IMRT Delivery: Constraints and Incorporation of Beam Smoothing into Inverse Planning.- 11. Simplification of IMRT intensity maps by means of 1-D and 2-D median-filtering during the iterative alculation.- 12. Errors in inverse treatment planning based on inaccurate dose calculation.- Session: EPID & Patient Positioning.- 1. Defining margins for systematic rotations and translations: A probability based geometrical approach.- 2. An optimal off-line set-up correction protocol based on numerical simulations with measured set-up data of 600 prostate cancer patients.- 3. Verification of dynamic MLC delivery using Electronic Portal Imaging.- 4. Cone-beam computed tomography on a medical linear accelerator using a flat-panel imager.- 5. MV and kV cone-beam CT on a medical linear accelerator.- 6. Quantitative cone beam megavoltage CT.- 7. Quality assurance of a videogrammetric system for computer-controlled non-invasive patient positioning for fractionated radiosurgery.- 8. Initial experience with a system for automated patient positioning.- 9. Implementation of a System for Precision, Automated Daily Target Volume Positioning.- 10. Using routine portal images to detect internal organ motion in prostate cancer patients; a simulation.- 11. Preliminary evaluation of a non-invasive ultrasound prostate localization device.- 12. Ultrasound guided percutaneous radiotherapy of prostate cancer.- P57. Whole Body Frame for the Target Localization with CCTV Camera System and Fluoroscopy.- P58. Studies for On-line Registration of Different Quality Images in Radiation Therapy.- P59. Experimental study of six parameter patient registration from helical MV fan-beam data.- P60. Computer assisted decision making after portal imaging.- P61. Digital Enhancement of Portal Images by Anisotropic Diffusion.- P62. Evaluation of a New Relocatable Head Fixation System.- Author Index.
