Clinical technique: evaluation of detection accuracy in surface-guided radiation therapy using CT references from different treatment planning systems.

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Masahide Saito, Koji Ueda, Hikaru Nemoto, Ryota Tozuka, Yosuke Miyasaka, Yoshiko Onishi, Syuichiro Sugiyama, Yumi Sasada, Naoki Sano, Hiroshi Onishi
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引用次数: 0

Abstract

This study evaluated the detection accuracy of the VOXELAN surface-guided radiation therapy (SGRT) system using CT reference body surfaces generated by different radiation treatment planning systems (RTPSs) under their respective default CT value threshold settings. Two phantoms were used to assess 6-axis position matching accuracy with 1 mm and 2 mm slice thicknesses. Contour variations of approximately 2 mm were observed in the ventral and dorsal directions due to differing RTPSs. VOXELAN generally achieved detection accuracy within 1 mm, though some RTPS combinations showed errors exceeding 1 mm in the longitudinal and lateral directions. Slice thickness differences had minimal impact on detection accuracy. Overall, VOXELAN's detection accuracy varied slightly depending on the RTPS used but remained within approximately 1 mm. From our results, using a consistent RTPS when performing SGRT is recommended, as detection errors associated with different RTPS combinations were complex and difficult to interpret.

临床技术:利用不同治疗方案系统的CT参考评价表面引导放射治疗的检测准确性。
本研究利用不同放射治疗计划系统(rtps)在各自的默认CT值阈值设置下产生的CT参考体表,评估了VOXELAN表面引导放射治疗(SGRT)系统的检测精度。使用两个模型来评估1 mm和2 mm切片厚度的6轴位置匹配精度。由于rtps的不同,在腹侧和背侧观察到约2毫米的轮廓变化。VOXELAN的检测精度一般在1 mm以内,但有些RTPS组合在纵向和横向上的误差超过1 mm。切片厚度差异对检测精度的影响最小。总体而言,VOXELAN的检测精度根据使用的RTPS略有不同,但保持在约1毫米范围内。从我们的结果来看,建议在执行SGRT时使用一致的RTPS,因为与不同RTPS组合相关的检测错误复杂且难以解释。
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来源期刊
Radiological Physics and Technology
Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
3.00
自引率
12.50%
发文量
40
期刊介绍: The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.
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