Yes
NITRC
XCEDE Schema
Syam Gadde
XML-Based Clinical Experiment Data Exchange Schema (XCEDE)provides an extensive metadata hierarchy for describing and documenting research and clinical studies.
XCEDE Schema
CT, MR, PET/SPECT, Clinical Neuroinformatics
http://www.nitrc.org/projects/xcede/, http://www.nitrc.org/projects/xcede/
syam.gadde@duke.edu