Spatial Metric Measurement for Multiplex Imaging Analysis

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Solution Overview

Problem

Current methods for analyzing multiplexed spatial protein data in cancer tissues are complex and inefficient, particularly in stratifying patients with refractory or relapsed Hodgkin lymphoma, and predicting outcomes for salvage chemotherapy and autologous stem-cell transplantation.

Innovation Solution

A method involving the computation of enrichment scores for specific cell types around target cells in tissue samples, using distance measurements and spatial metrics to identify key cell interactions, and applying these scores to predict treatment outcomes and guide therapy decisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If complex graph-based or nearest neighbor approaches are used to analyze multiplexed spatial protein data, then measurement precision may be improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:
Improvespatial analysis accuracyVSAvoidanalysis pipeline complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the complex spatial analysis problem into distinct computational components: (1) defining tumor regions through clustering algorithms, (2) calculating spatial metrics (distance, area, density) as separate quantifiable features, and (3) integrating these features into machine learning models. This segmentation transforms an intractable complex analysis into manageable modular steps that maintain precision while reducing overall system complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces spatial metrics (distance, area, density calculations) as intermediary representations between the raw multiplexed imaging data and the final clinical predictions. These metrics serve as a simplified intermediate layer that captures essential spatial relationships without requiring complex graph-based computations, thereby reducing analysis pipeline complexity while preserving measurement precision.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If comprehensive spatial analysis is performed on multiplexed imaging data, then measurement precision is improved, but loss of time increases

Engineering Contradiction:
Improvespatial metric accuracyVSAvoiddata processing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary computational actions during the imaging data acquisition phase by automatically defining tumor regions and calculating spatial metrics as the data is being collected. This preliminary processing ensures that when clinical predictions are made, the spatial analysis is already complete, eliminating the need for time-consuming post-processing and reducing overall analysis time while maintaining measurement precision.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If simplified analysis methods are used to process multiplexed spatial protein data, then ease of operation is improved, but measurement precision deteriorates

Engineering Contradiction:
Improveanalysis simplicityVSAvoidspatial analysis accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces complex manual spatial analysis methods with automated computational algorithms that calculate spatial metrics (distance, area, density) and integrate them into machine learning models. This substitution maintains measurement precision by using rigorous mathematical calculations while dramatically improving ease of operation, as the automated system handles the complexity without requiring manual intervention.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If detailed spatial analysis is performed to stratify patients, then reliability of prognosis is improved, but device complexity increases

Engineering Contradiction:
Improveprognosis accuracyVSAvoidanalysis system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the prognosis prediction process into distinct stages: (1) extracting spatial metrics from multiplexed imaging data, (2) integrating these metrics with clinical features, and (3) applying machine learning models to generate predictions. This segmentation allows detailed spatial analysis to be performed systematically, improving prognosis reliability while managing system complexity through modular architecture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent develops a universal analysis framework that can process multiple types of spatial data (distance, area, density metrics) and integrate them with various clinical features through a single machine learning pipeline. This multi-functional system maintains high prognosis reliability by comprehensively analyzing all relevant spatial parameters while reducing overall system complexity through unified processing architecture.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240402183A1Spatial metric measurement methods for multiplex imaging and uses in tumor sample analysis
Publication Date: 2024.12.05 BC CANCER PART OF THE PROVINCIAL HEALTH SERVICES AUTHORITY
  • US20240402183A1 patent drawing
  • US20240402183A1 patent drawing
  • US20240402183A1 patent drawing

AI summary

Spatial analysis methods based on nearest neighbor analysis are provided of specific regions of tissue to describe cancer states and develop biomarkers to predict outcomes. In various embodiments, the spatial analysis methods involve an interaction radius to computationally isolate local interactions and prevent the data from being influenced by cells that are very far away. Thereby, spatial analysis of cancer tissue can be quickly and consistently performed in an automated fashion to focus on tumor-immune cell biology, which occurs at a localized level.