Portable Dual Frequency Comb Photoacoustic Imaging for 3D Diagnosis
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Solution Overview
Problem
Traditional medical imaging modalities are invasive, expensive, and require specialized training, making them unsuitable for point-of-care use, especially in primary care settings.
Innovation Solution
A portable, non-invasive medical imaging device using a photonic integrated circuit (PIC)-scale dual frequency comb (DFC) for emitting light at multiple wavelengths, detecting acoustic waves, and generating three-dimensional images with AI-enabled image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional medical imaging modalities (CT, MRI, X-ray) are used, then imaging capability is achieved, but device size becomes large and requires specialized siting requirements
Solution Approach 1:
The imaging system is divided into separate functional modules: a portable handheld probe containing light sources and detectors, connected via optical fibers to a compact processing unit. This segmentation allows the imaging function to be separated from bulky traditional imaging equipment, enabling point-of-care use while maintaining diagnostic capability.
Solution Approach 2:
The patent replaces traditional mechanical imaging systems (CT scanners, MRI machines) with a photoacoustic imaging system that uses light propagation and acoustic wave detection. This substitution eliminates the need for large magnetic fields, X-ray tubes, and complex mechanical positioning systems, resulting in a much smaller device footprint suitable for primary care settings.
2Measurement precision
If traditional medical imaging modalities are used, then diagnostic imaging is achieved, but operational complexity increases requiring specialized training
Solution Approach 1:
The handheld probe is designed with automated functions including automatic light source activation, sequential detector scanning, and integrated image reconstruction. The system performs complex photoacoustic signal processing and 3D image generation automatically, eliminating the need for manual operation of complex equipment and reducing the training required for non-specialist healthcare providers.
Solution Approach 2:
The imaging system is designed to perform multiple diagnostic functions (vascular imaging, tissue oxygenation assessment, structural imaging) using a single integrated platform. This multi-functionality reduces the need for multiple specialized devices and allows general practitioners to perform diverse diagnostic tasks without extensive specialized training.
3Measurement precision
If traditional medical imaging modalities are used, then imaging is achieved, but cost increases making them expensive and inaccessible
Solution Approach 1:
The system uses inexpensive light-emitting diodes (LEDs) instead of costly laser sources, and employs standard photodetector arrays that can be mass-produced. The handheld probe design allows for economical manufacturing and potential disposable or low-cost replacement units, significantly reducing the overall system cost compared to traditional imaging modalities while maintaining adequate diagnostic performance for primary care applications.
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 affordable, real-time, and non-invasive medical imaging suitable for point-of-care settings, allowing frequent monitoring and reducing the need for specialized equipment and training.
Implementation Method 1
a PIC-scale DFC, a wand, and at least one processing element. The wand comprises (i) at least one emission point for emitting light from the PIC-scale DFC... and (ii) at least three sensors. The at least three sensors are adapted to detect acoustic waves from thermo-elastic changes
Data Source
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AI summary
In accordance with various embodiments of the present disclosure, a device for non-invasive medical imaging is provided. In some embodiments, the device comprises a photonic integrated circuit scale dual frequency comb (DFC), a hand-held wand, and at least one processing element. The wand comprises at least one emission point for emitting light from the DFC at a plurality of different wavelengths and at least three sensors. The wand directs the emitted light at one or more bodily structures. The sensors are adapted to detect acoustic waves from thermo-elastic changes in one or more elements within the bodily structures. The processing element is for generating an optical absorption spectrum from the detected acoustic waves, identifying one or more elements within the bodily structures based on the optical absorption spectrum, and generating a three-dimensional image of the elements based on the optical absorption spectrum from the detected acoustic waves.