Multimodal Spectroscopy for Pancreatic Tissue Classification

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Solution Overview

Problem

Current diagnostic procedures for pancreatic adenocarcinoma are inadequate for early detection and often misdiagnose the disease due to symptom overlap with pancreatitis, leading to unnecessary surgeries and poor survival rates.

Innovation Solution

The use of multimodal spectroscopy systems that direct electromagnetic radiation onto pancreatic tissue to collect spectroscopic response data, including fluorescence and reflectance spectra, and compare it with photon-tissue interaction models to classify tissue as normal, adenocarcinoma, or pancreatitis, facilitating non-invasive, real-time diagnosis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If endoscopic ultrasound-guided fine needle aspiration is used for diagnosis, then the disease can be detected, but the sensitivity is only 54% and misdiagnosis occurs due to symptom overlap with pancreatitis

Engineering Contradiction:

Improvediagnostic accuracyVSAvoiddisease detection reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent combines multiple spectroscopic techniques (fluorescence spectroscopy, reflectance spectroscopy, and Raman spectroscopy) into a unified diagnostic system. By merging these different optical methods, the system captures complementary information about tissue biochemical composition and structure, thereby improving diagnostic accuracy and reliability for distinguishing pancreatic adenocarcinoma from pancreatitis

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent analyzes multiple spectral parameters across different wavelengths and spectroscopic modes simultaneously. By examining changes in fluorescence emission spectra, reflectance spectra, and Raman shift patterns, the system identifies characteristic biochemical signatures that differentiate cancerous tissue from inflammatory tissue, overcoming the limitations of single-parameter diagnostic methods

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If current diagnostic procedures are used, then diagnosis can be obtained, but early stage detection is unable to be achieved

Engineering Contradiction:

Improveearly disease detection capabilityVSAvoidtime for accurate diagnosis

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary biochemical characterization of tissue using multimodal spectroscopy before invasive procedures are undertaken. By obtaining spectral data that reveals early biochemical changes in tissue, the system enables early detection of pancreatic adenocarcinoma before structural changes become apparent, allowing for earlier intervention and treatment planning

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If EUS-FNA is performed to diagnose pancreatic lesions, then tissue sampling is obtained, but unnecessary surgeries occur due to misdiagnosis

Engineering Contradiction:

Improvediagnostic procedure feasibilityVSAvoidharm from unnecessary surgery

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent introduces multimodal spectroscopy as an intermediary diagnostic step between initial lesion detection and definitive surgical intervention. This intermediate assessment provides additional biochemical information that helps distinguish benign from malignant lesions, reducing the rate of unnecessary Whipple surgeries while maintaining appropriate treatment for confirmed cancer cases

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This approach enables accurate classification of pancreatic tissue, potentially reducing unnecessary surgeries and improving survival rates by distinguishing adenocarcinoma from pancreatitis and normal tissue, and can be used in vivo, reducing the invasiveness of current diagnostic methods.

Implementation Method 1

collecting spectroscopic response data from the spectroscopic event, wherein the response data includes measurements derived from steady-state reflectance, steady-state fluorescence, and time-resolved fluorescence signals

Methodology Applied

Scientific EffectFluorescence: Fluorescence

Implementation Method 2

Methodology Applied

Scientific EffectReflectance: Reflection

Data Source

PatentUS8694266B2Multimodal spectroscopic systems and methods for classifying biological tissue

Publication Date: 2014.04.08 THE RGT UNIV OF MICHIGAN

AI summary

Multimodal optical spectroscopy systems and methods produce a spectroscopic event to obtain spectroscopic response data from biological tissue, either ex vivo or in vivo, and compare the response data with a model configured to correlate the measured response data and the most probable attributes of the tissue, thus facilitating classification of the tissue based on those attributes.