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This document describes changes applied to the Annotation and Image Markup (AIM) model between version 3.0, revision 11 and the AIM Foundation model. You can download the AIM Foundation model. 

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Introduction

This document summarizes the changes in the Annotation and Image Markup (AIM) model between version 3, revision 11 and the current version, which is 4, revision 43. AIM 4.0 is also referred to as the AIM foundation model.

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The most significant changes from version 3.0 to 4.0 of , revision 11 to the AIM Foundation model is the use of ISO 21090 data types, a caBIG® mandate, and the introduction of AIM Statements. An AIM Statement describes a relationship of a finding found on an image or series of images. It represents a relationship between the subject and object entities in the AIM foundation model.

You can download the AIM 3.0 model and the AIM Foundation model.

Why Use AIM Statements?

The AIM 3.0 model reflects relationships between classes using containment of a source class by a target class, and inheritance such as IS-A relationships. The expressive power of the model is limited by these two types of relationships. No other types of relationships in the AIM 3.0 model are possible and not all necessary relationships are present. For instance, there is no direct relationship between instances of the AnatomicEntity class, e.g. right-upper lobe of lung, and the ImagingObservation class, e.g. mass. Such classes can be indirectly linked to each other only via the Annotation class.

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