Fujita, H., Doi, K. and Giger, M.L. (1985) Investigation of basic imaging properties in digital radiography. 6. MTFs of II-TV digital imaging systems. Medical Physics, 12, 713-720.
 Giger, M.L., Doi, K. and Fujita, H. (1986) Investigation of basic imaging properties in digital radiography. 7. Noise Wiener spectra of II-TV digital imaging systems. Medical Physics, 13, 131-138.
 Shannon, C.E. (1948) Mathematical theory of communication. Bell System Technical Journal, 27, 379-423, 623- 656.
 Shannon, C.E. and Weaver, W. (1949) The mathematical theory of communication. The University of Illinois Press, Urbana.
 Skerl, D., Likar, B. and Pernus, F. (2006) A protocol for evaluation of similarity measures for rigid registration. IEEE Transactions on Medical Imaging, 25, 779-791.
 Pluim, J.P.W., Maintz, J.B.A. and Viergever, M.A. (2003) Mutual-information-based registration of medical images: A survey. IEEE Transactions on Medical Imaging, 22, 986-1004.
 Tourassi, G.D., Harrawood, B., Singh, S. and Lo, J.Y.(2007) Information-theoretic CAD system in mammography: Entropy-based indexing for computational efficiency and robust performance. Medical Physics, 34, 3193-3204.
 Lee, Y., Tsai, D.Y. and Matsuyama, E. (2007) A simulation study of radiographic image quality measurement based on transmitted information. Japanese Journal of Radiological Technology, 63, 341-344.
 Tsai, D.Y., Lee, Y. and Matsuyama, E. (2008) Information-entropy measure for evaluation of image. Journal of Digital Imaging, 21, 338-347.
 Cover, T.M. and Thomas, J.A. (1991) Elements of information theory. Wiley-Interscience, New York.
 Attneave, F. (1967) Applications of information theory to psychology. Holt, Rinehart and Winston, New York.
 Sprawls, P.Jr. (1995) Physical principles of medical imaging. Medical Physics Publishing, Wisconsin.