Method for positioning pulmonary nodules
A positioning method and technology for small nodules, which can be used in radiological diagnosis instruments, medical science, surgery, etc., can solve the problems of puncture complications, patient pain, and high costs, so as to reduce complications, reduce positioning steps, and reduce The effect of positioning costs
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Embodiment 1
[0047] like figure 1 As shown, a pulmonary nodule 100 located deep in the middle lobe of the right lung (the vertical distance under the pleura is more than 5 mm) is taken as an example for illustration. The location of the small nodule is deep, and it is difficult to locate by vision, finger palpation, and strong instrument sliding during the operation, but it can be located by the positioning method provided by the present invention. Specific steps are as follows:
[0048] S0: Determine the location of the small pulmonary nodule in the lung: First, determine the specific location of the small pulmonary nodule in the lung according to the preoperative CT image, such as: at the height of the fifth rib on the transverse plane, and at the level of the 5th rib on the sagittal plane 10cm from the midline and 15cm from the anterior chest wall;
[0049] S1: Establishment of a 3D model of the thorax: According to the preoperative CT image, 3D modeling is performed by a computer, an...
Embodiment 2
[0075] The difference between this embodiment and Embodiment 1 is:
[0076] On the basis of Example 1, the virtual puncture location point P1 on the lung surface confirmed by S3 is checked and calibrated, and the operator determines the real chest wall projection point P2 of the small pulmonary nodule under direct vision of the thoracoscope according to the traditional location method. , compare with the virtual puncture location point P1 on the lung surface determined in step S3, check the validity of the virtual puncture location point P1 on the lung surface, and calibrate the model.
[0077] Traditional localization methods include locating small pulmonary nodules through the operator's vision and touch.
[0078] The above test and calibration are suitable for the case where the nodule is close to the lung surface. When the nodule is far away from the lung surface or it is difficult to locate according to the traditional positioning method due to anatomical reasons, the tes...
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