Diffusion imaging quality control via entropy of principal direction distribution. - Mahshid Farzinfar; Ipek Oguz; Rachel Gimpel Smith; Audrey R. Verde; Cheryl Dietrich; Aditya Gupta; Maria L. Escolar; Joseph Piven; Sonia Pujol; Clement Vachet; Sylvain Gouttard; Guido Gerig; et al. (NeuroImage, 2013)