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  • Imaging
  • CONCLUSIONS: Combining MR delineations with our multi-atlas CT synthesis method could enable MRI-only treatment planning and thus improve the dosimetric and geometric accuracy of the treatment, and reduce the number of imaging procedures. (icr.ac.uk)
  • Most of these focus on improved ways to integrate imaging (both functional and anatomic) into clinical radiotherapy. (edu.au)
  • Dosimetry
  • Dosimetry of small static fields used in external photon beam radiotherapy: Summary of TRS-483, the IAEA-AAPM international Code of Practice for reference and relative dose determination. (bioportfolio.com)
  • A joint IAEA/AAPM international working group has developed a Code of Practice (CoP) for the dosimetry of small static fields used in external megavoltage photon beam radiotherapy, published by the IA. (bioportfolio.com)
  • Systematic
  • The margin-intense radiotherapy concept includes a systematic method to define the target volume for a simultaneous integrated boost in the region of tumour-vessel infiltration, and up to 4 radiotherapy dose levels will be investigated. (ox.ac.uk)
  • simulation
  • To clinically implement MRI simulation or MRI-alone treatment planning requires comprehensive end-to-end testing to ensure an accurate process. (naver.com)
  • recurrence
  • Only retrospective data is available for low dose rate (LDR) salvage prostate brachytherapy for local recurrence after external beam radiotherapy (EBRT). (bioportfolio.com)
  • Prediction of recurrence in early stage non-small cell lung cancer using computer extracted nuclear features from digital H&E images. (case.edu)
  • optimization
  • Importance factors, also known as weighting factors or penalty factors, are essential in determining the relative importance of multiple objectives or the penalty ratios of constraints incorporated into cost functions, especially in dealing with dose optimization in radiotherapy treatment planning. (uab.edu)
  • treatment
  • Retrospective analysis of 3D clinical treatment plans to investigate qualitative, possible, clinical consequences of the use of PBC versus AAA. (nih.gov)
  • When the original PBC treatment plans were recalculated using AAA with the same number of monitor units provided by PBC, the NTCPAAA was lower than the NTCPPBC, except for the breast treatments. (nih.gov)
  • In 1986, the Loma Linda University and Loma Linda University Medical Center (LLUMC) Boards of Trustees approved Slater's request to work with Fermi National Accelerator Laboratory (Fermilab) to begin planning the LLUMC Proton Treatment Center, which would result in the construction of the most expensive piece of medical equipment that had ever been built. (adventistworld.org)
  • We investigate the impact of this novel approach when applied to prostate radiotherapy treatments, and compare treatment plans generated using beam dependent margins to conventional margins. (icr.ac.uk)
  • Evaluation of a multi-atlas CT synthesis approach for MRI-only radiotherapy treatment planning. (icr.ac.uk)
  • A formulation of tissue- and water-equivalent materials using the stoichiometric analysis method for CT-number calibration in radiotherapy treatment planning. (naver.com)
  • Some modern treatment-planning systems (TPSs) provide for input of wedge factor (WF) tables covering the entire range of square and elongated fields available on the LINAC. (uab.edu)
  • DISCUSSION: This prospective multi-centre study aims to establish the maximum tolerated dose of pre-operative margin-intensified stereotactic radiotherapy in pancreatic cancer at high risk of positive resection margins with a view to subsequent definitive comparison with other neoadjuvant treatment options. (ox.ac.uk)
  • Organs
  • RESULTS: Results showed that both sCTs were suitable to perform clinical dose calculations with mean dose differences less than 1% for both the planning target volume and the organs at risk. (icr.ac.uk)
  • Through alternation of these two phases, both beam weights and importance factors are adjusted according to a fitness function that describes the conformity of dose distribution in planning target volume and dose-tolerance constraints in organs at risk. (uab.edu)
  • motion
  • BACKGROUND AND PURPOSE: To control and account for bladder motion is a major challenge in radiotherapy (RT) of bladder cancer. (forskningsdatabasen.dk)
  • Leaves move linearly between the positions defined at the control points and hence leaf motion is a linear approximation to the planned trajectories. (openrepository.com)
  • Research
  • Instead, we just tried to analyze the underlying problems and principles and concisely summarize the most important research results, which have been achieved by several generations of PhD students at the Computer Vision Laboratory of the Swiss Federal Institute of Technology during the past 20 years. (ethz.ch)