Interactive 3D Surgical Planning for Percutaneous Needle Placement
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Solution Overview
Problem
Current methods for preoperative treatment planning in minimally invasive liver tumor ablation, such as percutaneous radiofrequency ablation, rely on 2D scanned slices, which are inadequate for accurate needle placement, increasing the risk of complications and local recurrence.
Innovation Solution
A system and method for interactive 3D medical image processing that allows for the visualization and manipulation of a virtual probe within a 3D volume of a patient's anatomy, enabling more accurate preoperative planning by facilitating the intuitive placement of needles and avoiding obstacles like bones and major arteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If 2D scanned slices are used for preoperative treatment planning, then the planning process is simpler, but the accuracy of needle placement deteriorates
Solution Approach 1:
The patent transforms 2D scanned slices into a 3D volumetric representation of the liver and tumors. This dimensional upgrade allows medical personnel to visualize and plan needle trajectories in three-dimensional space, significantly improving placement accuracy while maintaining operational simplicity through automated processing of the 3D model.
2Device complexity
If 2D scanned slices are used for treatment planning, then the equipment and processing requirements are lower, but the reliability of avoiding complications deteriorates
Solution Approach 1:
By constructing a 3D volumetric model from 2D slices, the system enables comprehensive visualization of spatial relationships between tumors, liver tissue, and surrounding structures. This three-dimensional perspective allows for more reliable identification of safe needle pathways that avoid critical structures, thereby reducing complications while using standard medical imaging equipment.
3Measurement precision
If 3D visualization is implemented for preoperative planning, then the accuracy of needle placement is improved, but the device complexity increases
Solution Approach 1:
The system performs automated 3D reconstruction and virtual probe placement calculations before the actual surgical procedure. By pre-computing optimal needle trajectories and visualizing them in 3D space, the system achieves high placement accuracy without requiring complex real-time computational resources during the surgery itself.
Solution Approach 2:
The patent creates a virtual 3D copy of the patient's liver and tumors based on 2D scan data. This digital replica allows for extensive planning and simulation without requiring complex physical models or specialized surgical equipment, thereby achieving high precision with moderate system complexity.
4Reliability
If 3D visualization is implemented for preoperative planning, then the ability to avoid obstacles like bones and arteries is improved, but the processing time and computational requirements increase
Solution Approach 1:
The system performs 3D reconstruction and obstacle identification in advance of the surgical procedure. By pre-processing the scan data to create a detailed 3D model with marked obstacles (bones, arteries, veins), the system enables rapid planning during surgery without requiring extensive real-time computation, thus reducing actual surgical preparation time.
Data Source
AI summary
The success of percutaneous radiofrequency ablation mainly depends on the accuracy of the needle insertion, making it possible to destroy the whole tumor, while avoiding damages on other organs and minimizing risks of a local recurrence. This invention presents a simulated 3D environment for user to interactively place a treatment probe to a target position.