[Theoretical aspects of the formation of a roentgenokymographic image]

A procedure for estimating optimal values of parameters for the roentgenokymographic devices, including the basic parameter--the slit width, has been devised. An interrelation between the slit width in ordinary and perspective protective roentenokymographic devices was determined. The optimal slit width in the ordinary roentgenokymographic device was found to equal 0.5+0.03 mm, and in the protected roentgenokymographic device the investigation of adults and children indicated 0.15+0.02 and 0.22+0.02 mm, respectively. The resulting theoretical values are supported by experimental findings.