  The causal stochastic interpretation of relativistic quantum mechanics has
the problems of superluminal velocities, motion backward in time and the
incorrect non-relativistic limit. In this paper, according to the original
ideas of de Broglie, Bohm and Takabayasi, we have introduced simultaneous
quantum mass and quantum metric of curved spacetime to obtain a correct
relativistic theory free of mentioned problems. \keywords{Bohmian mechanics;
Klein-Gordon equation; quantum conformal transformations.
