FAST SPIN-ECHO MR OF CONTACT POINTS ON IMPLANTED INTRACEREBRAL STAINLESS-STEEL MULTICONTACT ELECTRODES

A three-dimensional fast spin-echo MR technique is proposed for locati ng contact points on implanted intracerebral multicontact electrode bu ndles. Coronal or sagittal reformatting shows the entire trajectory of the electrode bundles, The contact points are clearly visible owing t o the absence of coating material associated with a slightly larger su sceptibility artifact, Potentially, this technique may preclude postim plantation thin-section CT, with its associated high radiation dose.