[Phantom substances for quantitative evaluation of MRT images. III. Effect of various protein concentrations on MRT intensity values].

The use of heavy water (D2O) in paramagnetic agar phantoms can yield tissue equivalent values of the proton spin density p. In this manner all the MRI parameters that are typical of tissues can be realised in phantom substances. It is shown that the use of heavy water results in some enhancement of relaxation time, T2, that can be easily controlled via the agar concentration.