Evaluation of the Position Matching Accuracy for Radiological Technologists and Radiation Oncologists in Image-guided Radiation Therapy

DOI Web Site 9 References
  • Nagata Kazuya
    Department of Radiation Oncology, Koritsu Tatebayashi Kosei General Hospital
  • Shibasaki Takako
    Department of Radiology, Koritsu Tatebayashi Kosei General Hospital
  • Aoki Tetsuya
    Department of Radiation Oncology, Koritsu Tatebayashi Kosei General Hospital
  • Yoshida Tatsuya
    Department of Radiology, Koritsu Tatebayashi Kosei General Hospital Graduate School of Radiological Technology, Gunma Prefectural College of Health Sciences
  • Hayakawa Tomoki
    Department of Radiology, Koritsu Tatebayashi Kosei General Hospital
  • Kawadai Toshiyuki
    Department of Radiology, Koritsu Tatebayashi Kosei General Hospital

Bibliographic Information

Other Title
  • 画像誘導放射線治療における診療放射線技師および放射線腫瘍医の位置照合精度の評価
Published
2025
DOI
  • 10.6009/jjrt.25-1585
Publisher
Japanese Society of Radiological Technology

Search this article

Description

<p> Purpose: The promotion of task-shifting and task-sharing to facilitate work style reform for physicians has enabled radiological technologists (RTs) to perform primary matching in image-guided radiotherapy. The purpose in this study is to evaluate the position matching accuracy of RTs and radiation oncologist (ROs). Methods: Position matching was performed by four RTs and two ROs (RO-A and B). To evaluate the accuracy of the observer’s position matching, five cases each were identified for the head, neck, chest, and pelvic regions in two-dimension planar images (2D/2D), and for the prostate in three-dimensional (3D) images (CBCT). Manual position matching was performed using the offline matching of the position matching analysis software at a position moved by 3–7 mm in the XYZ directions from the treatment position at the time of treatment. Inter-observer position matching accuracy was evaluated by calculating the difference between the treatment position and the matching position, and by calculating a 3D vector from the above difference. Results: The differences between the irradiation position and the reference position were within ±1.0 mm for 2D/2D and within ±1.5 mm for CBCT for the four RTs, while the maximum differences for RO-A were 3.0 mm and 3.5 mm, respectively. For 3D vectors, in 2D/2D, the values for four RTs and RO-B were 0.1–0.6 mm, compared to RO-A was 1.2–1.7 mm, and in CBCT, the values for four RTs were 0.3–0.7 mm, compared to the two ROs’ were 1.3 mm and 1.4 mm. Conclusion: The position matching accuracy of our RTs was not inferior to that of ROs, confirming that primary matching by RTs is clinically acceptable.</p>

Journal

References(9)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top