ArticleTechnology in cancer research & treatment2018
Optical Surface Scanning for Patient Positioning in Radiation Therapy: A Prospective Analysis of 1902 Fractions.
Article in Technology in cancer research & treatment, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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Who cites it
33 citing papers in PubMed.
- Enhancing inter-fraction set-up accuracy and margin minimization (E-SAMM): a comparison of maskless surface-guided and mask-based laser alignment positioning in pelvic radiotherapy.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2026Article
- Evaluation of the clinical validity of fixation accuracy using an open-face black mask in head stereotactic radiotherapy.Radiological physics and technology · 2026Article
- Accuracy of Patient Setup Using Surface Guided Radiotherapy (SGRT) for Abdominal Malignancies.Methods and protocols · 2025Article
- Real-time volumetric CBCT reconstruction using surface and X-ray imaging for image-guided radiotherapy.Medical image analysis · 2025Article
- Phantom and in vivo validation of a novel contactless registration method for robot-assisted SEEG surgery.Chinese neurosurgical journal · 2025Article
- Enhancing patient positioning precision: a comparative analysis of surface-guided radiation therapy systems.Radiological physics and technology · 2025Article
- Data-Driven Volumetric Computed Tomography Image Generation From Surface Structures Using a Patient-Specific Deep Leaning Model.International journal of radiation oncology, biology, physics · 2025Article
- Patient-Specific CBCT Synthesis for Real-time Tumor Tracking in Surface-guided Radiotherapy.ArXiv · 2024Article
- Characteristics of detection accuracy of the patient setup using InBore optical patient positioning system.Radiological physics and technology · 2023Article
- Surface-Guided Radiotherapy: Can We Move on from the Era of Three-Point Markers to the New Era of Thousands of Points?Bioengineering (Basel, Switzerland) · 2023Review
- Setup accuracy and margins for surface-guided radiotherapy (SGRT) of head, thorax, abdomen, and pelvic target volumes.Scientific reports · 2023Article
- Dose coverage and breath-hold analysis of breast cancer patients treated with surface-guided radiotherapy.Radiation oncology (London, England) · 2023Article
- Surface-guided radiotherapy improves rotational accuracy in gynecological cancer patients.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2023Article
- ExacTrac Dynamic workflow evaluation: Combined surface optical/thermal imaging and X-ray positioning.Journal of applied clinical medical physics · 2022Article
- Advances and potential of optical surface imaging in radiotherapy.Physics in medicine and biology · 2022Review
- Article
- Surface guided radiation therapy: An international survey on current clinical practice.Technical innovations & patient support in radiation oncology · 2022Article
- Evaluation of the detection accuracy of set-up for various treatment sites using surface-guided radiotherapy system, VOXELAN: a phantom study.Journal of radiation research · 2022Article
- Detection of setup errors with a body-surface laser-scanning system for whole-breast irradiation after breast-conserving surgery.Journal of applied clinical medical physics · 2022Article
- Accuracy of patient setup positioning using surface-guided radiotherapy with deformable registration in cases of surface deformation.Journal of applied clinical medical physics · 2022Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PURPOSE/
objectiveReproducible patient positioning remains one of the major challenges in modern radiation therapy. Recently, optical surface scanners have been introduced into clinical practice in addition to well-established positioning systems, such as room laser and skin marks. The aim of this prospective study was to evaluate setup errors of the optical surface scanner Catalyst HD (C-RAD AB) in different anatomic regions. MATERIAL/
methodsBetween October 2016 and June 2017 a total of 1902 treatment sessions in 110 patients were evaluated. The workflow of this study included conventional setup procedures using laser-based positioning with skin marks and an additional registration of the 3-dimensional (3D) deviations detected by the Catalyst system. The deviations of the surface-based method were then compared to the corrections of cone beam computed tomography alignment which was considered as gold standard. A practical Catalyst setup error was calculated between the translational deviations of the surface scanner and the laser positioning. Two one-sided t tests for equivalence were used for statistical analysis.
resultsData analysis revealed total deviations of 0.09 mm ± 2.03 mm for the lateral axis, 0.07 mm ± 3.21 mm for the longitudinal axis, and 0.44 mm ± 3.08 mm vertical axis for the Catalyst system, compared to -0.06 ± 3.54 mm lateral, 0.53 ± 3.47 mm longitudinal, and 0.19 ± 3.49 mm vertical for the laser positioning compared to cone beam computed tomography. The lowest positional deviations were found in the cranial region, and larger deviations occurred in the thoracic and abdominal sites. A statistical comparison using 2 one-sided t tests showed a general concordance of the 2 methods ( P ≤ 0.036), excluding the vertical direction of the abdominal region ( P = 0.198).
conclusionThe optical surface scanner Catalyst HD is a reliable and feasible patient positioning system without any additional radiation exposure. From the head to the thoracic and abdominal region, a decrease in accuracy was observed within a comparable range for Catalyst and laser-assisted positioning.
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