Optical Surface Scanning for Patient Positioning in Radiation Therapy: A Prospective Analysis of 1902 Fractions.
Optical Surface Scanning for Patient Positioning in Radiation Therapy: A Prospective Analysis of 1902 Fractions.
复制标题
DOI：
10.1177/1533033818806002
复制
发表时间：
2018-01-01
影响因子：
2.8
通讯作者：
Corradini S
中科院分区：
文献类型：
--
作者：
Carl G;Reitz D;Schönecker S;Pazos M;Freislederer P;Reiner M;Alongi F;Niyazi M;Ganswindt U;Belka C;Corradini S
可重复的患者定位仍然是现代放射治疗的主要挑战之一。最近，光学表面扫描仪已被引入到临床实践中，除了完善的定位系统，如房间激光和皮肤标记。本前瞻性研究的目的是评价光学表面扫描仪Catalyst HD（C-RAD AB）在不同解剖区域的设置误差。2016年10月至2017年6月期间，共对110例患者的1902次治疗进行了评价。本研究的工作流程包括使用基于激光的皮肤标记定位的常规设置程序和Catalyst系统检测到的三维（3D）偏差的额外配准。然后将基于表面的方法的偏差与被认为是金标准的锥形束计算机断层扫描对准的校正进行比较。计算了表面扫描器的平移偏差和激光定位之间的实际Catalyst设置误差。使用等效性的双单侧t检验进行统计分析。数据分析显示，Catalyst系统的横向轴总偏差为0.09 mm ± 2.03 mm，纵向轴总偏差为0.07 mm ± 3.21 mm，垂直轴总偏差为0.44 mm ± 3.08 mm，而横向轴总偏差为-0.06 mm ± 3.54 mm，纵向轴总偏差为0.53 mm ± 3.47 mm，与锥形束计算机断层扫描相比，激光定位的垂直距离为0.19 ± 3.49 mm。最低的位置偏差被发现在头部区域，较大的偏差发生在胸部和腹部网站。使用2个单侧t检验进行的统计学比较显示，除腹部垂直方向（P = 0.198）外，2种方法基本一致（P ≤ 0.036）。光学表面扫描仪Catalyst HD是一种可靠可行的患者定位系统，无需任何额外的辐射暴露。从头部到胸部和腹部区域，在Catalyst和激光辅助定位的可比范围内观察到准确度降低。
Reproducible patient positioning remains one of the major challenges in modern radiation therapy. Recently, optical surface scanners have been introduced into clinical practice in addition to well-established positioning systems, such as room laser and skin marks. The aim of this prospective study was to evaluate setup errors of the optical surface scanner Catalyst HD (C-RAD AB) in different anatomic regions. Between October 2016 and June 2017 a total of 1902 treatment sessions in 110 patients were evaluated. The workflow of this study included conventional setup procedures using laser-based positioning with skin marks and an additional registration of the 3-dimensional (3D) deviations detected by the Catalyst system. The deviations of the surface-based method were then compared to the corrections of cone beam computed tomography alignment which was considered as gold standard. A practical Catalyst setup error was calculated between the translational deviations of the surface scanner and the laser positioning. Two one-sided t tests for equivalence were used for statistical analysis. Data analysis revealed total deviations of 0.09 mm ± 2.03 mm for the lateral axis, 0.07 mm ± 3.21 mm for the longitudinal axis, and 0.44 mm ± 3.08 mm vertical axis for the Catalyst system, compared to −0.06 ± 3.54 mm lateral, 0.53 ± 3.47 mm longitudinal, and 0.19 ± 3.49 mm vertical for the laser positioning compared to cone beam computed tomography. The lowest positional deviations were found in the cranial region, and larger deviations occurred in the thoracic and abdominal sites. A statistical comparison using 2 one-sided t tests showed a general concordance of the 2 methods (P ≤ 0.036), excluding the vertical direction of the abdominal region (P = 0.198). The optical surface scanner Catalyst HD is a reliable and feasible patient positioning system without any additional radiation exposure. From the head to the thoracic and abdominal region, a decrease in accuracy was observed within a comparable range for Catalyst and laser-assisted positioning.
登录
查看更多内容
影响因子：
2.1
作者：
Stanley DN;McConnell KA;Kirby N;Gutiérrez AN;Papanikolaou N;Rasmussen K
通讯作者：
Rasmussen K
使用催化剂（TM）/Sentinel（TM）系统对左侧乳腺癌患者进行封闭式放疗的治疗计划和评估，以进行深度灵感呼吸（DIBH）。
DOI：
10.1186/s13014-016-0716-5
发表时间：
2016-10-26
期刊：
Radiation oncology (London, England)
影响因子：
--
作者：
Schönecker S;Walter F;Freislederer P;Marisch C;Scheithauer H;Harbeck N;Corradini S;Belka C
通讯作者：
Belka C
影响因子：
3.8
作者：
Pallotta, Stefania;Simontacchi, Gabriele;Bucciolini, Marta
通讯作者：
Bucciolini, Marta
DOI：
10.1016/j.ijrobp.2011.12.004
发表时间：
2012-10-01
影响因子：
7
作者：
Gopan, Olga;Wu, Qiuwen
通讯作者：
Wu, Qiuwen
DOI：
10.1016/j.ijrobp.2005.11.008
发表时间：
2006-03-15
影响因子：
7
作者：
Bert, C;Metheany, KG;Chen, GTY
通讯作者：
Chen, GTY