C-Rank Tool

C-Rank allows automatic comparison between segmentations of 3D models or between volumetric images (CBCT/CT) of frontal and sphenoid sinuses.

Comparative Radiography

Comparative Radiography (CR) is a forensic identification method that consists of the comparison of skeletal structures using missing persons and unidentified radiographic images. There are several structures that, due to their variability between individuals, are more useful for radiographic comparison, such as the frontal sinuses, maxillary sinuses, or the clavicle, for example. The forensic expert reproduces the acquisition conditions and the pose of the skeletal structure of the radiographic image with the remains to carry out the comparison subsequently.

What does C-Rank do?

C-Rank allows the forensic expert to compare large numbers of segmentations of 3D models or volumetric images (CBCT/CT) by automatically creating rankings and alignments. This makes it very useful in large-scale identification scenarios and for Disaster Victim Identification (DVI) where it is necessary to compare large amounts of data.

Databases

C-Rank permits the creation of databases for segmentations of 3D models and volumetric images (CBCT/CT). C-Rank automatically extracts morphological information for each case and matches those with similar characteristics using 3D registration techniques.

Ranking

It then generates a ranking between missin person and unidentified cases, or between individual cases selected by the expert. The software determines points of interest by studying the curvature of the segmentation. These points of interest are aligned between each missing person and unidentified case for comparison and the resulting ranking shows the cases organized by probability.  

Visual Evaluation

The ranking also allows the expert to access a visual evaluation to manually assess differences and similarities.