The test 3D volume was acquired by a scanning
electron microscope with energy-dispersive X-ray spectrometry
(SEM-EDS). The imaged object was an artifact from Peru, the Moche
Cast figure. The scanning process yielded a 3D volume with about
236 billion pixels. The 3D dimensions are 11,520 x 9,984 x 2048
pixels with 16 bits per pixel. The dimensions correspond to 2048
wavelength frames of spatial 2D image information. Each pixel
corresponds to 0.9 micrometers in x and y dimensions, and the
acquisition of all pixels took 51.2 hours. Given the data,
material scientists can match peaks along the wavelength
dimensions to material elements and hence determine the presence
or absence of them at any spatial location based on the front and
side views of this 3D volume.