Surgical Guide Path Determination via 3D-2D Image Matching
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Solution Overview
Problem
Current methods for determining a target spot path during surgical operations lack accuracy, leading to increased radiation exposure and patient discomfort due to the need for multiple X-ray shots and invasive procedures.
Innovation Solution
A method involving a system with a shooting device and a locating device, where a three-dimensional partial image is obtained and matched with a simulated two-dimensional image to determine a surgical guide path, allowing for precise adjustment of a pointing structure to align with the target spot path, thereby improving surgical accuracy and reducing the need for invasive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgical instruments are inserted into the interior of the affected part to accurately obtain the path, then the accuracy of the operation is improved, but the invasiveness of the procedure increases and patient pain is exacerbated
Solution Approach 1:
The patent creates a virtual three-dimensional model (copy) of the affected part based on medical images, and performs path planning on this virtual model instead of directly inserting instruments into the patient. This virtual copying approach allows accurate path determination without invasive procedures, resolving the contradiction between measurement precision and patient harm.
Solution Approach 2:
The patent replaces the mechanical insertion of surgical instruments with a computational imaging and virtual path planning system. By using image processing, three-dimensional reconstruction, and virtual path simulation, the system determines the surgical path without physical intrusion, thereby maintaining accuracy while eliminating invasiveness.
2Measurement precision
If multiple X-ray shootings are performed to determine the path, then the path accuracy is improved, but the radiation exposure to the patient increases
Solution Approach 1:
The patent performs preliminary three-dimensional reconstruction and virtual path planning before the actual surgical procedure. By pre-determining the path using non-radiation medical images and virtual simulation, the system reduces the need for multiple intraoperative X-ray shots, thereby maintaining path accuracy while minimizing radiation exposure.
Solution Approach 2:
The patent creates a virtual three-dimensional copy of the anatomical structure and performs path planning on this digital model. This virtual copying eliminates the need for repeated physical X-ray shootings during surgery, as the path can be accurately determined in advance using the virtual model, thus reducing radiation exposure while maintaining precision.
3Measurement precision
If the shooting device is used continuously to obtain accurate path information, then the measurement accuracy is improved, but the occupation of surgical space increases
Solution Approach 1:
The patent performs path determination and three-dimensional reconstruction in advance before the surgical procedure begins. By completing the measurement and planning phases preliminarily, the shooting device can be removed after calibration, eliminating continuous occupation of surgical space while maintaining measurement accuracy through pre-acquired data.
Solution Approach 2:
The patent extracts the measurement function from the surgical procedure by performing three-dimensional reconstruction and path planning separately before surgery. The shooting device is used only for initial calibration and data acquisition, then removed, leaving only the locating device and pointing structure for the actual surgery. This extraction reduces surgical space occupation while preserving measurement precision.
Data Source
AI summary
The present disclosure relates to a method for determining a target spot path, which is applied to a determining system including a shooting device and a locating device that are separate from each other, and a calibration device connected to the shooting device, the method comprising: S1. obtaining a three-dimensional partial image for an affected part and a virtual path located in the three-dimensional partial image; S2. matching a simulated two-dimensional image obtained based on projection of the three-dimensional partial image with a two-dimensional projection image obtained based on the affected part; S3. determining a surgical guide path on the two-dimensional projection image that corresponds to the virtual path according to position information of the virtual path on the simulated two-dimensional image, when the simulated two-dimensional image and the two-dimensional projection image are matched; and/or S4.