ArticleJournal of applied clinical medical physics2019
Commissioning of a respiratory gating system involving a pressure sensor in carbon-ion scanning radiotherapy.
Article in Journal of applied clinical medical physics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- End-to-end film-based characterization of gated delivery latencies in a spot-scanned synchrotron-based proton therapy system.Journal of applied clinical medical physics · 2026Article
- Commissioning and robustness evaluation of external laser sensor for respiratory gating in carbon-ion radiotherapy.Journal of applied clinical medical physics · 2026Article
- High-speed bioimpedance-based gating system for radiotherapy: Prototype and proof of principle.Journal of applied clinical medical physics · 2024Article
- Commissioning and Validation of CT Number to SPR Calibration in Carbon Ion Therapy Facility.International journal of particle therapy · 2024Article
- Comparative evaluation of a surface-based respiratory monitoring system against a pressure sensor for 4DCT image reconstruction in phantoms.Journal of applied clinical medical physics · 2024Article
- Non-invasive high frequency oscillatory ventilation inhibiting respiratory motion in healthy volunteers.Scientific reports · 2022Article
- Commissioning of carbon-ion radiotherapy for moving targets at the Osaka Heavy-Ion Therapy Center.Medical physics · 2022Article
- Clinical applicability of deep learning-based respiratory signal prediction models for four-dimensional radiation therapy.PloS one · 2022Article
- Low-Dose PET Imaging of Tumors in Lung and Liver Regions Using Internal Motion Estimation.Diagnostics (Basel, Switzerland) · 2021Article
- Utilization of Diaphragm Motion to Predict the Displacement of Liver Tumors for Patients Treated with Carbon ion Radiotherapy.Technology in cancer research & treatmentArticle
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study reports the commissioning methodology and results of a respiratory gating system [AZ - 733 V/733 VI (Anzai Medical Co., Japan)] using a pressure sensor in carbon-ion scanning radiotherapy. Commissioning includes choosing a location and method for pressure sensor installation, delay time measurement of the system, and the final flow test. Additionally, we proposed a methodology for the determination of a threshold level of generating an on/off gate for the beam to the respiratory waveform, which is important for clinical application. Regarding the location and method for installation of the pressure sensor, the actual person's abdomen, back of the body position, and supine/prone positioning were checked. By comparing the motion between the pressure sensor output and the reference LED sensor motion, the chest rear surface was shown to be unsuitable for the sensor installation, due to noise in the signal caused by the cardiac beat. Regarding delay time measurement of the system, measurements were performed for the following four steps: (a). Actual motion to wave signal generation; (b). Wave signal to gate signal generation; (c). Gate signal to beam on/off signal generation; (d). Beam on/off signal to the beam irradiation. The total delay time measured was 46 ms (beam on)/33 ms (beam off); these were within the prescribed tolerance time (<100 ms). Regarding the final flow test, an end-to-end test was performed with a patient verification system using an actual carbon-ion beam; the respiratory gating irradiation was successfully performed, in accordance with the intended timing. Finally, regarding the method for determining the threshold level of the gate generation of the respiration waveform, the target motion obtained from 4D-CT was assumed to be correlated with the waveform obtained from the pressure sensor; it was used to determine the threshold value in amplitude direction.
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