Automated Artifact Detection in Microwell Plate Heat Maps

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Solution Overview

Problem

High throughput screening in microwell plates is hindered by executional artifacts, which are errors caused by experimental processes, leading to inaccurate measurement values and reduced dataset quality, making it difficult to draw conclusions about compound effectiveness. Manual analysis of heat maps is time-consuming, error-prone, and subjective, often resulting in overlooked or misinterpreted anomalies.

Innovation Solution

A method involving computing spatial features from heat maps, generating feature vectors, and using a trained classifier to automatically detect executional artifacts, providing consistent and objective classification of microwell plates based on spatial patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual analysis of heat maps is performed by human reviewers, then executional artifacts can be identified and annotated, but the process is time-consuming and error-prone

Engineering Contradiction:
Improveartifact detection accuracyVSAvoidanalysis time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical manual review process with an automated computer-based system that uses image processing and machine learning algorithms to detect executional artifacts in heat maps, eliminating the time-consuming and error-prone manual analysis while maintaining or improving detection accuracy

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

Solution Approach 2:

The patent introduces an automated analysis system as an intermediary between the heat map data and the final artifact identification, using computational algorithms to objectively detect and classify executional artifacts without human intervention, thereby resolving the contradiction between accuracy and time efficiency

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If manual review processes are used to identify executional artifacts, then some artifacts can be detected, but the process is subjective and inconsistent across reviewers

Engineering Contradiction:
Improveartifact detection consistencyVSAvoidanalysis system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the subjective human judgment process with an objective automated system that applies consistent algorithms and criteria to all heat maps, eliminating reviewer variability and ensuring uniform artifact detection across the entire dataset

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

Solution Approach 2:

The patent transforms the subjective qualitative assessment into objective quantitative analysis by defining specific parameters and thresholds for artifact detection, allowing consistent and reproducible identification of executional artifacts across different reviewers and datasets

Inventive Principle:
Principle #35Parameter changes

3Productivity

If reviewers analyze only a limited number of heat maps to complete within available time, then time constraints are met, but executional anomalies are overlooked or misinterpreted

Engineering Contradiction:
Improveanalysis throughputVSAvoidanomaly detection completeness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces the limited-capacity manual review process with an automated system that can process all heat maps in the dataset without time constraints, ensuring complete coverage and detection of all executional artifacts while maintaining high productivity

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

Solution Approach 2:

The patent enables continuous automated analysis of all heat maps without interruption or sampling, allowing the system to process the entire dataset thoroughly and detect all executional anomalies that would otherwise be missed in manual review

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS11361438B2Techniques for analyzing and detecting executional artifacts in microwell plates
Publication Date: 2022.06.14 RECURSION PHARMACEUTICALS INC
  • US11361438B2 patent drawing
  • US11361438B2 patent drawing
  • US11361438B2 patent drawing

AI summary

In various embodiments, an experiment analysis application detects executional artifacts in experiments involving microwell plates. The experiment analysis application computes one or more sets of spatial features based on one or more heat maps associated with a microwell plate. The experiment analysis application then aggregates the set(s) of spatial features to generate a feature vector. The experiment analysis application inputs the feature vector into a trained classifier. In response, the trained classifier generates a label indicating that the microwell plate is associated with a first executional artifact.