Scientific instruments have opened up sensory domains far beyond the constraints of biological perception. Technology has extended our phenotype enormously and has pushed the boundaries of what can be known...
Tomography is the technique of imaging by section. Slice data is generated using an X-ray source that rotates in spiral fashion around the object. A large number of successive scans are taken. The slices are reassembled by computer software which produces a very detailed three-dimensional view of the internal structure.
Neck and thoracic CT scan. Source: Department of Radiology at Brigham and Women's Hospital, Harvard Medical School.