Image subtraction facilitates assessment of volume and density change in ground-glass opacities in chest CT
Staring, M., Pluim, J.P.W., de Hoop, B.J., Klein, S., van Ginneken, B., Gietema, H.A., Nossent, G.D., Schaefer-Prokop, C., van de Vorst, S., Prokop, W.M.
Investigative Radiology 44 (2), p. 61-66