Walker et al give us a nice picture and high-yield tutorial on the reversed halo sign, in this case from cryptogenic organizing pneumonia: J Thorac Imaging 2011;26:w80. (FREE)
Reversed Halo Sign (Image)
Reversed Halo Sign (Image)
Reversed Halo Sign (Image)
Walker et al give us a nice picture and high-yield tutorial on the reversed halo sign, in this case from cryptogenic organizing pneumonia: J Thorac Imaging 2011;26:w80. (FREE)