1. A system for analyzing multidimensional data, the data characterizing a least a portion of a subject, comprising: an input module able to accept a dataset comprising at least one multidimensional dataset, where the dataset may be derived from any of several types of data sources; a registration module coupled to the input module and accepting the dataset from the input module, the registration module being able to register the dataset from the input module to a selected anatomical model to provide a registered dataset; a processing module coupled to the registration module and accepting the registered dataset from the registration module, the processing module determining a core region within the registered dataset and associated core region information, and, using the core region information and the registered dataset, performing acts including computing threshold characteristics of the registered dataset; and a segmentation module coupled to the processing module and accepting the registered dataset, the core region information from the processing module and the threshold characteristics; and segmenting the registered dataset to provide a segmented description of an organ from the registered dataset and core region information, the segmented, registered dataset describing characteristics of the organ of the subject.