Surgical Navigation Using Diffusion Tensor Imaging for Anatomical Targeting
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Solution Overview
Problem
Surgical procedures, particularly neurosurgical ones, face challenges in identifying and accessing anatomical targets within the brain or nervous system due to their visual similarity with surrounding tissues, making it difficult to perform precise interventions like deep brain stimulation or tumor removal without causing side effects to adjacent tissue.
Innovation Solution
A computer-assisted surgical navigation system utilizing diffusion tensor imaging (DTI) and magnetic resonance imaging (MRI) to generate detailed images of brain structures, allowing for the identification of specific anatomical and functional targets, such as fiber tracts, and guiding instruments to precise locations within the brain or nervous system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional surgical navigation without diffusion tensor imaging is used, then the surgical procedure can be performed with simpler equipment, but the precision of anatomical target identification is insufficient and side effects to adjacent tissue cannot be avoided
Solution Approach 1:
The patent introduces diffusion tensor imaging (DTI) as an intermediary imaging modality between conventional MRI and the surgical navigation system. DTI serves as a mediator that provides fiber tract information, enabling precise identification of anatomical targets like the internal capsule and corticospinal tract without requiring direct visual differentiation of these structures from surrounding tissue during surgery.
Solution Approach 2:
The patent applies preliminary action by acquiring DTI data and generating fiber tract models before the surgical procedure. The navigation system is pre-configured with these preprocessed images and anatomical information, allowing the surgeon to plan the approach and avoid critical structures in advance, rather than attempting to identify and avoid them during the actual surgery.
2Manufacturing precision
If functional targets are stimulated without precise anatomical identification, then the surgical procedure can be performed more quickly, but the accuracy of stimulation and risk of side effects increase
Solution Approach 1:
The patent creates a virtual copy of the patient's brain anatomy through DTI imaging and navigation system modeling. This digital replica includes detailed fiber tract information that allows precise identification of functional targets and planning of stimulation pathways, enabling accurate stimulation without requiring time-consuming intraoperative anatomical exploration or trial-and-error approaches.
3Reliability
If diffusion tensor imaging and advanced imaging techniques are used, then the accuracy of anatomical target identification improves, but the cost and complexity of the system increases
Solution Approach 1:
The patent designs the navigation system to be multi-functional, integrating DTI image processing, fiber tract modeling, anatomical landmark identification, and surgical guidance capabilities into a single unified system. This universal platform can handle various neurological procedures and anatomical regions, distributing the complexity across a comprehensive system rather than requiring separate specialized tools for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and efficient targeting of specific anatomical structures, reducing side effects by accurately stimulating or treating only the intended areas, thereby improving the accuracy and safety of neurosurgical procedures.
Implementation Method 1
The data can be used to measure the flow of water or diffusion of water as measured in the image data
Implementation Method 2
various imaging techniques, such as magnetic resonance imaging (MRI) can be used to obtain a detailed image of the brain
Data Source
AI summary
A method and apparatus can be used to guide or navigate an instrument relative to a body. Various types of information can be used to assist in the navigation, such as MRI data, diffusion tensor image data, and the like. The information can assist in identifying the portions of the body.