A very fast reconstruction is undertaken in an image reconstruction process by
tomography, by dividing measurements through the subject into a series of subsequent
sets that are inverted by back projections giving partial result blocks used to
search for the change law for the subject. Partial contents of the image can then
be predicted at a reference time and their accumulation gives the image. The law
for how the subject changes with time is evaluated and is used to compensate for
partial results before their accumulation.
