Magnetic resonance in musculoskeletal tumors; state of the art and recent advances

In recent years there has been a renewed interest in analog cryptology as a consequence of the introduction of chaotic cryptosystems. These systems are based upon the masking of the message signal by a chaotic carrier. For the correct recovering to be accomplished, it is necessary the synchronization of both cryptosystems. In this article the concept of chaotic synchronization is explained and one of the first working chaotic cryptosystems is described. (Author) 6 refs