Loading...
  • Centers
  • This article profiles four radiotherapy centers that are using Calypso to accurately target tumors while reducing treatment margins, with a goal of offering cancer patients fewer treatment side effects and a better quality of life. (varian.com)
  • Although there are 30 proton therapy centers and five carbon ion radiotherapy (C-ion RT) centers in operation, half of them began charged particle therapy with protons or carbon ions just during the last decade. (mdpi.com)
  • The company supplies informatics software for managing comprehensive cancer clinics, radiotherapy centers and medical oncology practices. (bio-medicine.org)
  • tumor
  • Large setup errors, ranges of organ motion, and changes in tumor position, size, and shape are most likely to be detected during the course of RT with frequent imaging, which has been becoming a requirement to attain the best tumor coverage improving local control and the most healthy tissue sparing, thereby improving quality of life. (oncologynurseadvisor.com)
  • cervical cancer
  • A total number of 105 cone beam computer tomography scans for ten patients with cervical cancer were derived prior to treatment delivery and 6D set-up errors were acquired with image registration tools. (springeropen.com)
  • The result indicate that a CTV to PTV margin of 6 mm was sufficient to take into account 6D set-up errors for most patients with cervical cancer. (springeropen.com)
  • bladder
  • This has led to evolution of various in-room imaging technologies which enable evaluation and correction of setup errors, anatomic changes related to weight loss or deformation, or internal organ motion related to respiration, peristalsis, or rectal/bladder filling. (hindawi.com)
  • uncertainty
  • However, there is a great deal of uncertainty in accurately defining of the position of targets during the delivery of fractionated radiotherapy, both during a given fraction and between successive fractions. (hindawi.com)
  • This approach is a major refinement of existing procedures allowing visualisation soft tissue that will significantly reduce target position uncertainty and improve dosimetry leading to the improved reproducibility and reduced animal numbers in preclinical radiotherapy studies. (nc3rs.org.uk)
  • localization
  • The objective of this work is to study the accuracy of on-line correction of setup errors achievable using either kV- or MV-localization (i.e., open-field) radiographs.Using a gantry mounted kV and MV dual-beam imaging system, the accuracy of on-line measurement and correction of setup error using electronic kV- and MV-localization images was examined based on anthropomorphic phantom and patient imaging studies. (stanford.edu)
  • systematic error
  • The grand mean displacements for all anatomical points was 5.07 mm, with mean systematic error of 1.1 mm and mean random setup error of 2.63 mm, while bootstrapped POIs grand mean displacement was 5.09 mm, with mean systematic error of 1.23 mm and mean random setup error of 2.61 mm. (jefferson.edu)
  • practices
  • Traditional radiotherapy practices incorporate use of anatomic surface landmarks as well as radiologic correlation with two-dimensional imaging in the form of port films or fluoroscopic imaging. (hindawi.com)
  • delivery
  • Abdel Aziz HM, Reyad AY, Kamel TH, Abdel Aziz AH, Bahl A (2011) The Impact of Immediate Breast Reconstruction on the Technical Delivery of Postmastectomy Radiotherapy. (omicsonline.org)
  • We conclude that the interfractional larynx setup error is a significant source of RT setup/delivery error in HNC, both when the larynx is considered as a CTV or OAR. (jefferson.edu)