ArticleJournal of applied clinical medical physics2020
Assessment of the use of different imaging and delivery techniques for cranial treatments on the Halcyon linac.
Article in Journal of applied clinical medical physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Daily quality assurance, system and procedure-specific commissioning of a bore-based optical surface imaging system for surface-guided radiotherapy (SGRT).Journal of applied clinical medical physics · 2026Article
- Accuracy of Patient Setup Using Surface Guided Radiotherapy (SGRT) for Abdominal Malignancies.Methods and protocols · 2025Article
- Enhancing patient positioning accuracy: evaluating daily cone beam computed tomography in the halcyon system.Japanese journal of clinical oncology · 2025Article
- Characterization of the IDENTIFYJournal of applied clinical medical physics · 2024Article
- A novel comprehensive metric balancing imaging dose and setup accuracy in image-guided radiotherapy: concept proposal and clinical validation.Frontiers in oncology · 2024Article
- Characteristics of detection accuracy of the patient setup using InBore optical patient positioning system.Radiological physics and technology · 2023Article
- Evaluation and correlation of patient movement during online adaptive radiotherapy with CBCT and a surface imaging system.Journal of applied clinical medical physics · 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
- Evaluation of initial patient setup methods for breast cancer between surface-guided radiation therapy and laser alignment based on skin marking in the Halcyon system.Radiation oncology (London, England) · 2023Article
- Verification of patient-setup accuracy using a surface imaging system with steep measurement angle.Journal of applied clinical medical physics · 2023Article
- Volumetric modulated arc therapy for hippocampal-sparing prophylactic cranial irradiation: Planning comparison of Halcyon and C-arm accelerators.Frontiers in oncology · 2023Article
- Article
- Fast generation of lung SBRT plans with a knowledge-based planning model on ring-mounted Halcyon Linac.Journal of applied clinical medical physics · 2021Article
- Intra-fraction motion monitoring during fast modulated radiotherapy delivery in a closed-bore gantry linac.Physics and imaging in radiation oncology · 2021Article
- Operational Insights From the Longitudinal Analysis of a Linear Accelerator Machine Log.Cureus · 2021Article
- Commissioning of optical surface imaging systems for cranial frameless stereotactic radiosurgery.Journal of applied clinical medical physics · 2021Article
- Recent advanced in Surface Guided Radiation Therapy.Radiation oncology (London, England) · 2020Review
- Time Matters: A Review of Current Radiotherapy Practices and Efficiency Strategies.Technology in cancer research & treatmentReview
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIn this work, we investigated the effect on the workflow and setup accuracy of using surface guided radiation therapy (SGRT) for patient setup, megavoltage cone beam CT (MVCBCT) or kilovoltage cone beam CT (kVCBCT) for imaging and fixed IMRT or volumetric-modulated arc therapy (VMAT) for treatment delivery with the Halcyon linac.
methodsWe performed a retrospective investigation of 272 treatment fractions, using three different workflows. The first and second workflows used MVCBCT and fixed IMRT for imaging and treatment delivery, and the second one also used SGRT for patient setup. The third workflow used SGRT for setup, kVCBCT for imaging and VMAT for delivery. Workflows were evaluated by comparing the number of fractions requiring repeated imaging acquisitions and the time required for setup, imaging and treatment delivery. Setup position accuracy was assessed by comparing the daily kV- or MV- CBCT with the planning CT and measuring the residual rotational errors for pitch, yaw and roll angles.
resultsWithout the use of SGRT, the imaging fields were delivered more than once on 11.1% of the fractions, while re-imaging was necessary in 5.5% of the fractions using SGRT. The total treatment time, including setup, imaging, and delivery, for the three workflows was 531 ± 157 s, 503 ± 130 s and 457 ± 91 s, respectively. A statistically significant difference was observed when comparing the third workflow with the first two. The total residual rotational errors were 1.96 ± 1.29°, 1.28 ± 0.67° and 1.22 ± 0.76° and statistically significant differences were observed when comparing workflows with and without SGRT.
conclusionsThe use of SGRT allowed for a reduction of re-imaging during patient setup and improved patient position accuracy by reducing residual rotational errors. A reduction in treatment time using kVCBCT with SGRT was observed. The most efficient workflow was the one including kVCBCT and SGRT for setup and VMAT for delivery.
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