Energy Modulated Luminescence Tomography for Neural Circuit Mapping
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Solution Overview
Problem
Current imaging modalities are inadequate for mapping neural circuits with sufficient resolution, particularly in neurological and neuromuscular activities, failing to provide detailed structural and functional maps of neural networks.
Innovation Solution
A neural activity monitoring system utilizing functionalized nanoparticles that emit photons in response to physiological events, combined with X-ray modulated tomographic imaging, allows for high-resolution imaging of neural activity by detecting changes in photon emission rates and energies associated with action potentials or field potentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional imaging modalities are used, then the imaging process is simple and equipment is readily available, but the resolution and detail of neural circuit mapping is insufficient
Solution Approach 1:
The patent introduces nanoparticles as intermediary agents that are injected into the subject. These nanoparticles serve as mediators between the X-ray imaging system and the neural circuits, enabling high-resolution mapping by accumulating in neural tissues and providing contrast enhancement without requiring direct modification of the imaging equipment
Solution Approach 2:
The imaging system combines multiple components into a composite approach: nanoparticles with specific properties (size, composition, surface characteristics) are used in conjunction with X-ray imaging technology. This composite material strategy enables the system to achieve both high resolution and neural-specific targeting that neither component could achieve alone
2Loss of information
If higher resolution imaging of neural activity is achieved, then detailed neural circuit maps are obtained, but the complexity and cost of the imaging system increases
Solution Approach 1:
Nanoparticles act as information intermediaries that carry neural activity signals from deep within neural circuits to the external detection system. By functionalizing nanoparticle surfaces with neural-specific ligands, the system captures detailed neural activity information without requiring direct intrusion into neural tissue or complex surgical instrumentation
Solution Approach 2:
The patent replaces complex mechanical neural recording systems (such as electrode arrays requiring surgical implantation) with a non-invasive X-ray based detection system. The mechanical complexity of direct neural interfacing is substituted with optical/X-ray detection of nanoparticle signals, simplifying the overall system while maintaining high information fidelity
3Measurement precision
If nanoparticles are used to enhance imaging resolution, then neural circuit mapping precision improves, but the procedure becomes more complex requiring nanoparticle injection
Solution Approach 1:
The nanoparticles are designed with multi-functionality: they serve as contrast agents for X-ray imaging, target specific neural structures through surface functionalization, and provide long-term stability for repeated imaging sessions. This universal design allows a single nanoparticle formulation to address multiple imaging requirements, reducing the need for multiple different agents or procedures
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 the generation of detailed, high-resolution images and maps of neural activity, capable of observing single cells and neural circuits in action, providing spatial and time-domain information for assessing functional mappings of neural communications.
Implementation Method 1
an X-ray beam that is one or both of focused or micro-modulated is directed at a tissue-of-interest labeled with functionalized nanophosphors to activate the functionalized nanophosphors
Implementation Method 2
The activated nanoparticles emit photons at a background rate when not further stimulated by an underlying tissue
Implementation Method 3
emit photons in response to physiological events when such a physiological event occurs within the measurement volume... at one or both of a different rate or energy when further stimulated by action potentials or field potentials
Data Source
AI summary
The present approach generally relates to systems and methods for implementing energy modulated tomographic imaging of nanoparticles. In certain embodiments, a first energy is used to activate probe particles labeling an anatomy or tissue of interest. The probe particles, once activated, emit photons at a different rate and/or spectrum in response to an underlying physiological event, such as action potentials propagating in the labeled anatomy or tissue. The emitted photons may then be detected and used to map or image the occurrence of the physiological event.