The use of gold markers and electronic portal imaging for radiotherapy verification in prostate cancer patients: Sweden Ghana Medical Centre experience

Citations Over Time

Abstract

The success of radiotherapy cancer treatment delivery depends on the accuracy of patient setup for each fraction. A significant problem arises from reproducing the same patient position and prostate location during treatment planning for every fraction of the treatment process. To analyze the daily movements of the prostate, gold markers are implanted in the prostate and portal images taken and manually matched with reference images to locate the prostate. Geometrical and fiducial markers are annotated onto a highly quality generated digitally reconstructed radiographs, that are compared with portal images acquired right before treatment dose delivery. A 0 and 270 degree treatment fields are used to calculate prostate shifts for all prostate cancer patients undergoing treatment at the Sweden Ghana Medical Centre, using an iViewGT portal imaging device. After aligning of the marker positions onto the reference images, the set-up deviations corrections are displayed and an on-line correction procedure applied. The measured migrations of the prostate markers are below the threshold of 3 mm for the main plans and 2 mm for the boost plans. With daily electronic portal imaging combined with gold markers, provides an objective method for verifying and correcting the position of the prostate immediately prior to radiation delivery. -------------------------------------------- Cite this article as: Acquah GF. The use of gold markers and electronic portal imaging for radiotherapy verification in prostate cancer patients: Sweden Ghana Medical Centre experience. Int J Cancer Ther Oncol 2014; 2 (1):020112. DOI: http://dx.doi.org/10.14319/ijcto.0201.12

Related Papers

• → Effectiveness of Using Fewer Implanted Fiducial Markers for Prostate Target Alignment(2009)39 cited
• → MRI visibility of gold fiducial markers for image-guided radiotherapy of rectal cancer(2018)18 cited
• → A framework for automatic creation of gold-standard rigid 3D–2D registration datasets(2016)13 cited
• → The Non-Fiducial Approach Applied to GPS Networks(1998)1 cited
• → Su1993 EUS-Guided Fiducial Markers Placed by Pre-Loaded Fiducial Needles Have Significantly Increased Visibility Relative to Back-Loaded Fiducial Needles in Pancreatic Cancer(2016)