Image Analysis in Pathology
Expert-defined terms from the Professional Certificate in AI for Digital Pathology course at UK School of Management. Free to read, free to share, paired with a globally recognised certification pathway.
A #
A
Algorithm #
A set of rules or instructions given to an AI system to enable it to complete a task. In image analysis, algorithms are used to identify and classify different features within an image.
Artificial Intelligence (AI) #
The simulation of human intelligence in machines that are programmed to think like humans and mimic their actions.
Automated Image Analysis #
The use of AI algorithms to automatically analyze and interpret digital images, including pathology slides.
C #
C
Computational Pathology #
The use of computer algorithms to analyze and interpret pathology images, with the goal of improving diagnosis, prognosis, and treatment planning.
Convolutional Neural Network (CNN) #
A type of deep learning algorithm commonly used in image analysis. CNNs are designed to automatically and adaptively learn spatial hierarchies of features from images.
D #
D
Deep Learning #
A subset of machine learning that is based on artificial neural networks with representation learning. Deep learning models are capable of learning and improving from experience and data.
Digital Pathology #
The practice of using digital images, instead of traditional glass slides, to diagnose and study diseases.
F #
F
Feature Extraction #
The process of identifying and extracting relevant features from digital images for use in image analysis.
G #
G
Glass Slides #
Traditional pathology slides that are prepared by fixing and staining tissue samples and then mounting them on glass slides.
H #
H
Histology #
The study of the microscopic structure of tissues.
I #
I
Image Analysis #
The process of using algorithms to automatically analyze and interpret digital images, including pathology slides.
Institute of Electrical and Electronics Engineers (IEEE) #
A professional organization that develops and publishes standards for the use of technology in a wide range of fields, including image analysis and digital pathology.
L #
L
Labeling #
The process of assigning a label or classification to a digital image or a feature within an image.
M #
M
Machine Learning #
A subset of AI that is based on the idea that systems can learn and improve from experience without being explicitly programmed.
Medical Image Analysis #
The use of algorithms to automatically analyze and interpret medical images, including pathology slides.
N #
N
Neural Network #
A type of algorithm that is inspired by the structure and function of the human brain. Neural networks are composed of interconnected nodes or "neurons" that process information and learn from experience.
P #
P
Pathology #
The study of the causes and effects of disease.
Pixel #
The smallest unit of a digital image, representing a single color or intensity value.
R #
R
Region of Interest (ROI) #
A specific area within a digital image that is selected for analysis.
S #
S
Slide Scanning #
The process of digitizing glass slides by capturing high-resolution images of the entire slide.
Supervised Learning #
A type of machine learning in which the algorithm is trained on a labeled dataset, with the goal of learning to recognize and classify similar data in the future.
T #
T
Tissue Samples #
Small pieces of tissue that are removed from a patient's body for examination and analysis.
U #
U
Unsupervised Learning #
A type of machine learning in which the algorithm is trained on an unlabeled dataset, with the goal of identifying patterns and structure in the data.
V #
V
Visualization #
The process of creating graphical representations of data, including digital images and pathology slides.
W #
W
Whole Slide Imaging (WSI) #
The process of creating high-resolution digital images of entire pathology slides. WSI is used to create digital archives of pathology slides and to enable remote consultation and analysis.
Automated image analysis is a subfield of AI that involves the use of algorithms… #
Image analysis algorithms are designed to identify and extract relevant features from images, and to classify and interpret those features in a meaningful way.
One common type of image analysis algorithm is the convolutional neural network… #
CNNs are designed to automatically and adaptively learn spatial hierarchies of features from images, without the need for explicit feature engineering.
Image analysis is a critical tool in digital pathology, which is the practice of… #
Digital pathology has a number of advantages over traditional pathology, including the ability to easily share and collaborate on cases, the ability to perform automated image analysis, and the ability to create digital archives of pathology slides.
To enable image analysis in digital pathology, glass slides must first be scanne… #
This is typically done using a slide scanner, which captures high-resolution images of the entire slide. The resulting digital images are then analyzed using image analysis algorithms to identify and extract relevant features.
There are a number of challenges associated with image analysis in digital patho… #
To address these challenges, the field of computational pathology has emerged, which focuses on the use of computer algorithms to analyze and interpret pathology images.
Computational pathology is a multidisciplinary field that draws on expertise fro… #
In addition to image analysis, computational pathology also encompasses a range of other techniques, including machine learning, data mining, and visualization.
Machine learning is a subset of AI that is particularly well #
suited to image analysis tasks. In machine learning, algorithms are trained on labeled datasets, with the goal of learning to recognize and classify similar data in the future. There are two main types of machine learning: supervised learning and unsupervised learning.
In supervised learning, the algorithm is trained on a labeled dataset, with the… #
For example, an image analysis algorithm might be trained on a dataset of pathology slides that have been labeled with specific diagnoses. The algorithm would then learn to recognize the features that are indicative of each diagnosis, and would be able to classify new slides based on those features.
In unsupervised learning, the algorithm is trained on an unlabeled dataset, with… #
For example, an image analysis algorithm might be trained on a dataset of pathology slides without any labels, and might be able to identify clusters of slides that correspond to different tissue types or disease states.
In addition to image analysis and machine learning, computational pathology also… #
Data mining is the process of automatically discovering patterns and trends in large datasets, and can be used to identify biomarkers and other clinically relevant features in pathology images. Visualization is the process of creating graphical representations of data, including digital images and pathology slides, and can be used to facilitate communication and collaboration among pathologists and other healthcare professionals.
In summary, image analysis is a critical tool in digital pathology, and is used… #
Image analysis algorithms, such as convolutional neural networks, are designed to identify and extract relevant features from images, and to classify and interpret those features in a meaningful way. Computational pathology is a multidisciplinary field that combines image analysis, machine learning, data mining, and visualization to enable more accurate and efficient diagnosis and treatment of diseases.