CaPTk has been designed as a modular platform, currently incorporating components for:

1. User interaction (e.g., coordinate definition, region annotation, and spherical approximation of abnormalities)
2. Image pre-processing (e.g., smoothing, bias correction, co-registration, normalization)
3. Image segmentation
4. Feature extraction
5. Specialized diagnostic analysis

The components of interaction and pre-processing are available for all integrated applications giving a researcher (whether clinical or computational) a single point of entry and exit for all their tasks.