1. A System comprising: an organ/anatomic segmentation template, which contains one or more 3D VOI segmentation areas and parameters for adjustment of size, shape and location of a segmentation group; an animal size and weight calculator, to be used for input of animal size and weight and converts into parameters for adjustment of size, shape and location of a segmentation template; an animal spine position calculator, which is used to define animal bone skeleton and identify spine direction and detailed position by the longest bone path for conversion of parameters for adjustment of size and shape of the segmentation template; and a texture analyzer, which is used to define a series of segmentations with similar texture for further match of the segmentation template and an image for adjustment of size, shape and location of the segmentation template.