@article{yang2013multiscale, title={Multiscale segmentation of the skull in MR images for MRI-based attenuation correction of combined MR/PET}, author={Yang, Xiaofeng and Fei, Baowei}, journal={Journal of the American Medical Informatics Association}, volume={20}, number={6}, pages={1037--1045}, year={2013}, publisher={BMJ Publishing Group BMA House, Tavistock Square, London, WC1H 9JR} }