Spectral computed tomography fingerprinting

A system, comprising:

• a memory storing instructions, including a spectral CT fingerprint module;
• and
• a processor configured to execute at least instructions corresponding to the spectral CT fingerprint module, which causes the processor to:
• generate spectral projection data of a subject, including at least first spectral projection data corresponding to a first energy range and second spectral projection data corresponding to a second energy range, wherein the first and the second energy range are different;
• construct an image from a combination of the spectral projection data;
• construct a set of basis images for the energy ranges and from the spectral projection data;
• construct a multi-dimensional histogram from the set of basis images, wherein the multi-dimensional histogram includes at least two axes, a first corresponding to a first basis component and a second corresponding to a second basis component, and the multi-dimensional histogram includes a set of clusters, including one cluster for each material represented in the spectral projection data;
• and
• visually present, concurrently, the image and the multi-dimensional histogram.

A computer readable medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to:

• generate spectral projection data of a subject, including at least first spectral projection data corresponding to a first energy range and second spectral projection data corresponding to a second energy range, wherein the first and the second energy range are different;
• construct an image from a combination of the spectral projection data;
• construct a set of basis images for the energy ranges and from the spectral projection data;
• construct a multi-dimensional histogram from the set of basis images, wherein the multi-dimensional histogram includes at least two axes, a first corresponding to a first basis component and a second corresponding to a second basis component, and the multi-dimensional histogram includes a set of clusters, including one cluster for each material represented in the spectral projection data;
• and
• visually present, concurrently, the image and the multi-dimensional histogram.