A computing system (100) for providing a mapping of a physical quantity on a biological tissue, comprising: an input data interface (10), configured to obtain data from the physical quantity on different spatial points of the biological tissue; a computation module (20), having at least: (a) a digitization unit (220), configured to produce a digitized representation of the biological tissue in voxels and/or pixels, wherein, based on the obtained data, a subset of the voxels and/or pixels is assigned a value of the physical quantity; (b) a concatenation unit (230), configured to spatially correlate the voxels and/or pixels of the produced digitized representation of the biological tissue; and (c) a regression unit (240), configured to process the information of the spatially correlated voxels and/or pixels and generate a regression analysis of the physical quantity on the biological tissue; and an output data interface (30), configured to, based on the generated regression analysis, provide a mapping of the physical quantity on the biological tissue, wherein a value of the physical quantity is assigned to each voxel and/or pixel.