In a medical therapy or diagnostic system, magnetic resonance (MR) techniques are used in order to determine the position of the focal point of an ultrasound wave with respect to a patient''s body. Therefore, it is an object of the present invention to provide an ultrasound waveguide which could be used within a magnetic resonance environment. To better address these concerns, it is an aspect of the present invention to provide an ultrasound waveguide comprising an electrically conducting section and an electrically isolating section. A reduction of the length of an electrically isolating section possibly decreases the electromagnetic coupling of the high frequency electromagnetic field in the MR environment to the electrically conducting section.
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