Resolving signal drift in the wall-mounted camera of the RGSC system Journal Article
| Authors: | Park, J.; Gagneur, J. D.; Chungbin, S. J.; Rong, Y.; Lim, S. B.; Chan, M. F. |
| Article Title: | Resolving signal drift in the wall-mounted camera of the RGSC system |
| Abstract: | Purpose: To present a modified calibration method to reduce signal drift due to table sagging in Respiratory Gating for Scanner (RGSC) systems with a wall-mounted camera. Materials and Methods: Approximately 70 kg of solid water phantoms were evenly distributed on the CT couch, mimicking the patient's weight. New calibration measurements were performed at 9 points at the combination of three lateral positions, the CT isocenter and ±10 cm laterally from the isocenter, and three longitudinal locations, the CT isocenter and ±30 cm or ±40 cm from the isocenter. The new calibration was tested in two hospitals. Results: Implementing the new weighed calibration method at the extended distance yielded improved results during the DIBH scan, reducing the drift to within 1 from 3 mm. The extended calibration positions exhibited similarly reduced drift in both hospitals, reinforcing the method's robustness and its potential applicability across all centers. Conclusion: This proposed solution aims to minimize the systematic error in radiation delivery for patients undergoing motion management with wall-mounted camera RGSC systems, especially in conjunction with a bariatric CT couchtop. © 2024 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, LLC on behalf of The American Association of Physicists in Medicine. |
| Keywords: | phantoms, imaging; motion; particle accelerators; motion management; humans; human; camera calibration; rgsc |
| Journal Title: | Journal of Applied Clinical Medical Physics |
| Volume: | 25 |
| Issue: | 3 |
| ISSN: | 1526-9914 |
| Publisher: | American College of Medical Physics |
| Date Published: | 2024-03-01 |
| Start Page: | e14291 |
| Language: | English |
| DOI: | 10.1002/acm2.14291 |
| PUBMED: | 38306504 |
| PROVIDER: | scopus |
| PMCID: | PMC10929989 |
| DOI/URL: | |
| Notes: | Article -- Source: Scopus |
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