post deep brain electrode insertion follow up. Right hippocampal volume loss. There are multiple electrodes inserted on this scan.Specifically, one electrode through the right occipital burr hole and the tip is located at the right hippocampus.There are three more electrodes and the tip locations are anterior middle and posterior aspect of the right hippocampus, through the right temporal burr hole. There is another electrode inserted through the left occipital burr hole and the tip of the electrode is located at the left hippocampus.There are significant metallic artifacts from the electrodes which prevents precise evaluation of electrode track changes. However, there are a couple of changes shown on today's scan.First, there is ovoid shape signal void (series 301, image 97/176) in the frontal horn of left lateral ventricle which corresponds well to intra-ventricular air. This could related to operation related considering one of the right temporal approach electrodes especially toward middle portion of the right hippocampus appears to be traversing right lateral ventricle temporal horn and the right occipital approach electrode traverse right lateral ventricle occipital horn. Second, there is tubular high signal intensity on T2 weighted axial scan which follows the most posteriorly located electrode through the right temporal burr hole. This may represent electrode track edema or fluid collection.A bit prominent enhancement seen on the area of the right side choroidal fissure may represent choroidal plexus enhancement and due to associated electrode related metallic artifact, it appears to be a bit prominent enhancing area. The ventricles size is symmetric and unremarkable. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Post multiple deep brain electrodes insertion status.2. Intraventricular air was seen which is operation related.3. Likely electrode track edema along with right temporal burr hole approach posterior electrode.4. No abnormal enhancement. 