Comparison of initial patient setup accuracy between surface imaging and three point localization: A retrospective analysis.
Comparison of initial patient setup accuracy between surface imaging and three point localization: A retrospective analysis.
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DOI：
10.1002/acm2.12183
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发表时间：
2017-11
影响因子：
2.1
通讯作者：
Rasmussen K
中科院分区：
文献类型：
--
作者：
Stanley DN;McConnell KA;Kirby N;Gutiérrez AN;Papanikolaou N;Rasmussen K
从历史上看，在成像验证之前，患者的定位过程使用一组永久性的患者标记，或纹身，放置在皮下。对准这些纹身后，应用特定的计划移位，并通过成像验证位置，例如锥形束计算机断层扫描（CBCT）。由于各种因素，这些标记可能偏离期望的位置，或者可能很难使患者与这些标记对齐。基于表面的成像系统是验证整个皮肤表面而不是纹身初始定位的替代方法。本研究的目的是回顾性比较基于CBCT的3D校正，最初定位纹身的患者与使用C - RAD CatalystHD表面成象系统定位的患者。随机选择6000个单独的分数（每种方法每个部位600-900个），计算并记录CBCT后的3D校正。对于这两种定位方法，评估了四种常见的治疗部位组合：骨盆/下肢、腹部、胸部/上肢和乳房。采用配对样本Wilcoxon sign‐rank检验评估统计学差异，显著性水平<0.01。骨盆/下肢、腹部、胸部/上肢和乳房的三维移位向量平均大小分别为0.9±0.4 cm、1.0±0.5 cm、0.9±0.6 cm和1.4±0.7 cm。对于CatalystHD，骨盆/下肢、腹部、胸部/上肢和乳房的平均3D位移幅度分别为0.6±0.3 cm、0.5±0.3 cm、0.5±0.3 cm和0.6±0.2 cm。4个部位的三维移位向量差异均有统计学意义（P < 0.01）。这项研究表明，最初与C‐RAD CatalystHD对齐的患者的总体3D偏移校正明显小于与皮下纹身对齐的患者。表面成像系统可以被认为是初始患者设置的可行选择，对于特定的诊所和患者，可能比永久标记更可取。
Historically, the process of positioning a patient prior to imaging verification used a set of permanent patient marks, or tattoos, placed subcutaneously. After aligning to these tattoos, plan specific shifts are applied and the position is verified with imaging, such as cone‐beam computed tomography (CBCT). Due to a variety of factors, these marks may deviate from the desired position or it may be hard to align the patient to these marks. Surface‐based imaging systems are an alternative method of verifying initial positioning with the entire skin surface instead of tattoos. The aim of this study was to retrospectively compare the CBCT‐based 3D corrections of patients initially positioned with tattoos against those positioned with the C‐RAD CatalystHD surface imager system. A total of 6000 individual fractions (600–900 per site per method) were randomly selected and the post‐CBCT 3D corrections were calculated and recorded. For both positioning methods, four common treatment site combinations were evaluated: pelvis/lower extremities, abdomen, chest/upper extremities, and breast. Statistical differences were evaluated using a paired sample Wilcoxon signed‐rank test with significance level of <0.01. The average magnitudes of the 3D shift vectors for tattoos were 0.9 ± 0.4 cm, 1.0 ± 0.5 cm, 0.9 ± 0.6 cm and 1.4 ± 0.7 cm for the pelvis/lower extremities, abdomen, chest/upper extremities and breast, respectively. For the CatalystHD, the average magnitude of the 3D shifts for the pelvis/lower extremities, abdomen, chest/upper extremities and breast were 0.6 ± 0.3 cm, 0.5 ± 0.3 cm, 0.5 ± 0.3 cm and 0.6 ± 0.2 cm, respectively. Statistically significant differences (P < 0.01) in the 3D shift vectors were found for all four sites. This study shows that the overall 3D shift corrections for patients initially aligned with the C‐RAD CatalystHD were significantly smaller than those aligned with subcutaneous tattoos. Surface imaging systems can be considered a viable option for initial patient setup and may be preferable to permanent marks for specific clinics and patients.
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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：
0.5
作者：
Rathod S;Munshi A;Agarwal J
通讯作者：
Agarwal J
DOI：
10.1016/s0958-3947(96)00156-2
发表时间：
1997-01-01
期刊：
Medical dosimetry : official journal of the American Association of Medical Dosimetrists
影响因子：
--
作者：
Greer, P B;Mortensen, T M
通讯作者：
Mortensen, T M
DOI：
10.1016/s0360-3016(01)01439-0
发表时间：
2001-05-01
影响因子：
7
作者：
Wurstbauer, K;Sedlmayer, F;Kogelnik, HD
通讯作者：
Kogelnik, HD
影响因子：
2.1
作者：
Elsner, Kelly;Francis, Kate;Roderick, Stephanie
通讯作者：
Roderick, Stephanie