动物模型中人工气腹和体位变化引起的骨盆动脉变形。
Deformation of the Pelvic Arteries Caused by Pneumoperitoneum and Postural Changes in an Animal Model.
机构信息
Department of Surgical Oncology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan;
Graduate School of Engineering, The University of Tokyo, Tokyo, Japan.
出版信息
In Vivo. 2021 Jan-Feb;35(1):275-281. doi: 10.21873/invivo.12256.
BACKGROUND/AIM: We investigated pelvic arterial deformation and shift due to intraoperative pneumoperitoneum and postural changes in an animal model.
MATERIALS AND METHODS
Computed tomography images of pigs were acquired in different body positions (supine, head down at 5° and 10°, right lateral recumbent at 5° and 15°) before and after insufflation. We used a free software (3D Slicer) for image analysis. After landmark registration using 10 markers inserted into the pelvis, pelvic arterial deformation and shift of seven arterial bifurcation points were evaluated. The distance moved was the target registration error (TRE) from the points registered in the supine position. Fiducial registration error (FRE) was measured using the 10 pelvic markers.
RESULTS
TRE average from postural changes ranged from 0.7 to 1.2 mm and was 1.4 mm due to pneumoperitoneum. TRE and FRE averages were 2.1 mm and 0.2 mm, respectively.
CONCLUSION
The pelvis was useful for registering anatomical landmarks.
背景/目的：我们在动物模型中研究了术中气腹和体位变化引起的骨盆动脉变形和移位。
材料和方法
在充气前后，对猪的不同体位（仰卧位、头低位 5°和 10°、右侧卧位 5°和 15°）进行了计算机断层扫描成像。我们使用了一个免费的软件（3D Slicer）进行图像分析。在使用 10 个标记物插入骨盆进行了标志点注册后，评估了骨盆动脉变形和七个动脉分叉点的移位。从仰卧位注册的点移动的距离是目标配准误差（TRE）。使用 10 个骨盆标记物测量了基准点配准误差（FRE）。
结果
体位变化引起的 TRE 平均值为 0.7 至 1.2 毫米，气腹引起的 TRE 平均值为 1.4 毫米。TRE 和 FRE 的平均值分别为 2.1 毫米和 0.2 毫米。
结论
骨盆可用于注册解剖标志点。
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