ArticleStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]2012
Three-dimensional patient setup errors at different treatment sites measured by the Tomotherapy megavoltage CT.
Article in Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed.
- Total Body Irradiation (TBI) using Helical Tomotherapy in children and young adults undergoing stem cell transplantation.Radiation oncology (London, England) · 2013Trial
- Impact of reduced interval from simulation CT to treatment delivery on dosimetric and positioning accuracy for total marrow lymph-node irradiation.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2026Article
- Accuracy Evaluation Trial of Mixed Reality-Guided Spinal Puncture Technology.Therapeutics and clinical risk management · 2023Article
- Treatment planning of total marrow irradiation with intensity-modulated spot-scanning proton therapy.Frontiers in oncology · 2022Article
- Multi-institutional evaluation of MVCT guided patient registration and dosimetric precision in total marrow irradiation: A global health initiative by the international consortium of total marrow irradiation.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2019Article
- Dose Escalation of Total Marrow Irradiation in High-Risk Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation.Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation · 2017Article
- Rotational output and beam quality evaluations for helical tomotherapy with use of a third-party quality assurance tool.Radiological physics and technology · 2016Article
- Multi-institutional feasibility study of a fast patient localization method in total marrow irradiation with helical tomotherapy: a global health initiative by the international consortium of total marrow irradiation.International journal of radiation oncology, biology, physics · 2015Article
- A retrospective tomotherapy image-guidance study: analysis of more than 9,000 MVCT scans for ten different tumor sites.Journal of applied clinical medical physics · 2014Article
- Quality of patient positioning during cerebral tomotherapy irradiation using different mask systems.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2014Article
- Optimizing image guidance frequency and implications on margins for gynecologic malignancies.Radiation oncology (London, England) · 2013Article
- Is helical tomotherapy accurate and safe enough for spine stereotactic body radiotherapy?Journal of cancer research and clinical oncology · 2013Article
- Large mediastinal tumor mass as a prognostic factor in Hodgkin's lymphoma. Is the definition on the basis of a chest radiograph in the era of CT obsolete?Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2012Article
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5 authors.
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Abstract
background and purposeReduction of interfraction setup uncertainty is vital for assuring the accuracy of conformal radiotherapy. We report a systematic study of setup error to assess patients' three-dimensional (3D) localization at various treatment sites. PATIENTS AND
methodsTomotherapy megavoltage CT (MVCT) images were scanned daily in 259 patients from 2005-2008. We analyzed 6,465 MVCT images to measure setup error for head and neck (H&N), chest/thorax, abdomen, prostate, legs, and total marrow irradiation (TMI). Statistical comparisons of the absolute displacements across sites and time were performed in rotation (R), lateral (x), craniocaudal (y), and vertical (z) directions.
resultsThe global systematic errors were measured to be less than 3 mm in each direction with increasing order of errors for different sites: H&N, prostate, chest, pelvis, spine, legs, and TMI. The differences in displacements in the x, y, and z directions, and 3D average displacement between treatment sites were significant (p < 0.01). Overall improvement in patient localization with time (after 3-4 treatment fractions) was observed. Large displacement (> 5 mm) was observed in the 75(th) percentile of the patient groups for chest, pelvis, legs, and spine in the x and y direction in the second week of the treatment.
conclusionMVCT imaging is essential for determining 3D setup error and to reduce uncertainty in localization at all anatomical locations. Setup error evaluation should be performed daily for all treatment regions, preferably for all treatment fractions.
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