Impact of deformation on a supine-positioned image-guided breast surgery approach.
Impact of deformation on a supine-positioned image-guided breast surgery approach.
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DOI：
10.1007/s11548-021-02452-8
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发表时间：
2021-11
影响因子：
3
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中科院分区：
文献类型：
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为了降低图像引导下保乳手术的再手术率，可以利用磁共振（MR）仰卧位成像的增强灵敏度。然而，由于乳房变形（例如，来自患者/手臂位置变化和手术室台旋转差异）。在这项研究中，采用标准的刚性配准方法和组织变形的特点。在n = 10例健康乳房上，当手臂从传统MR扫描位置（手臂向下和手臂向上）移动到横向伸展手术配置时，通过比较术中基准位置来测量表面位移。配准手臂放下和手臂抬起位置的仰卧位MR图像，以模拟术中表现。从仰卧位MR成像配置到模拟手术位的乳房移位为28.9 ± 9.2 mm，移位主要发生在下/上级方向。关于仰卧位MR与手术对准，平均基准、目标和最大目标配准误差分别为9.0 ± 1.7 mm、9.3 ± 1.7 mm和20.0 ± 7.6 mm。即使在MR图像和模拟手术中保持相似的手臂位置，其平均值分别为6.0 ± 1.0 mm、6.5 ± 1.1 mm和12.5 ± 2.8 mm。从仰卧位MR定位到手术呈现，乳房发生较大位移（9.9-70.1 mm）。数据还表明，存在显著的非刚性变形（9.3 ± 1.7 mm，平均最大值为20.0 mm），需要在图像引导和建模应用中予以考虑。
To reduce reoperation rates for image-guided breast-conserving surgery, the enhanced sensitivity of magnetic resonance (MR) supine imaging may be leveraged. However, accurate tissue correspondence between images and their physical counterpart in the surgical presentation is challenging due to breast deformations (e.g., from patient/arm position changes, and operating room table rotation differences). In this study, standard rigid registration methods are employed and tissue deformation is characterized. On n = 10 healthy breasts, surface displacements were measured by comparing intraoperative fiducial locations as the arm was moved from conventional MR scanning positions (arm-down and arm-up) to the laterally extended surgical configuration. Supine MR images in the arm-down and arm-up positions were registered to mock intraoperative presentations. Breast displacements from a supine MR imaging configuration to a mock surgical presentation were 28.9 ± 9.2 mm with shifts occurring primarily in the inferior/superior direction. With respect to supine MR to surgical alignment, the average fiducial, target, and maximum target registration errors were 9.0 ± 1.7 mm, 9.3 ± 1.7 mm, and 20.0 ± 7.6 mm, respectively. Even when maintaining similar arm positions in the MR image and mock surgery, the respective averages were 6.0 ± 1.0 mm, 6.5 ± 1.1 mm, and 12.5 ± 2.8 mm. From supine MR positioning to surgical presentation, the breast undergoes large displacements (9.9–70.1 mm). The data also suggest that significant nonrigid deformations (9.3 ± 1.7 mm with 20.0 mm average maximum) exist that need to be considered in image guidance and modeling applications.
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影响因子：
3.9
作者：
Cakmak, Guldeniz Karadeniz;Emre, Ali U.;Ozkan, Selcuk
通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1007/s11548-015-1235-9
发表时间：
2015-12
影响因子：
3
作者：
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通讯作者：
Miga MI
影响因子：
3
作者：
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通讯作者：
Murphy, Colleen