{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T01:09:14Z","timestamp":1792804154684,"version":"4.5.0"},"reference-count":42,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2000,11]]},"abstract":"<jats:p content-type=\"fine-print\"><jats:italic>Object.<\/jats:italic> The actual distortion present in a given series of magnetic resonance (MR) images is difficult to establish. The purpose of this study was to validate an MR imaging\u2014based methodology for stereotactic targeting of the internal globus pallidus during electrode implantation in children in whom general anesthesia had been induced.<\/jats:p><jats:p content-type=\"fine-print\"><jats:italic>Methods.<\/jats:italic> Twelve children (mean follow up 1 year) suffering from generalized dystonia were treated with deep brain stimulation by using a head frame and MR imaging. To analyze the influence of distortions at every step of the procedure, the geometrical characteristics of the frame were first controlled using the localizer as a phantom. Then pre- and postoperative coordinates of fixed anatomical landmarks and electrode positions, both determined with the head frame in place, were statistically compared.<\/jats:p><jats:p content-type=\"fine-print\">No significant difference was observed between theoretical and measured dimensions of the localizer (Student's t-test, |t| &gt; 2.2 for 12 patients) in the x, y, and z directions.<\/jats:p><jats:p content-type=\"fine-print\">No significant differences were observed (Wilcoxon paired-sample test) between the following: 1) pre- and postoperative coordinates of the anterior commissure (AC) (\u0394x = 0.3 \u00b1 0.29 mm and \u0394y = 0.34 \u00b1 0.32 mm) and posterior commissure (PC) (\u0394x = 0.15 \u00b1 0.18 mm and \u0394y = 0.34 \u00b1 0.25 mm); 2) pre- and postoperative AC\u2014PC distance (\u0394L = 0.33 \u00b1 0.22 mm); and 3) preoperative target and final electrode position coordinates (\u0394x = 0.24 \u00b1 0.22 mm; \u0394y = 0.19 \u00b1 0.16 mm).<\/jats:p><jats:p content-type=\"fine-print\"><jats:italic>Conclusions.<\/jats:italic> In the authors' center, MR imaging distortions did not induce detectable errors during stereotactic surgery in dystonic children. Target localization and electrode implantation could be achieved using MR imaging alone after induction of general anesthesia. The remarkable postoperative improvement in these patients confirmed the accuracy of the procedure (Burke\u2014Marsden\u2014Fahn Dystonia Rating Scale score \u0394 = \u221283.8%).<\/jats:p>","DOI":"10.3171\/jns.2000.93.5.0784","type":"journal-article","created":{"date-parts":[[2009,5,13]],"date-time":"2009-05-13T17:27:13Z","timestamp":1242235633000},"page":"784-790","source":"Crossref","is-referenced-by-count":82,"title":["Magnetic resonance imaging stereotactic target localization for deep brain stimulation in dystonic children"],"prefix":"10.3171","volume":"93","author":[{"given":"Nathalie","family":"Vayssiere","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simone","family":"Hemm","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michel","family":"Zanca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie Christine","family":"Picot","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alain","family":"Bonafe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Cif","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philippe","family":"Frerebeau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philippe","family":"Coubes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"315","DOI":"10.1097\/00006123-199902000-00036","article-title":"Microelectrode recording during posteroventral pallidotomy: impact on target selection and complications.","volume":"44","author":"Alterman","year":"1999"},{"key":"b2","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"1156","DOI":"10.1097\/00006123-199911000-00028","article-title":"Evaluation of the spatial accuracy of magnetic resonance imaging-based stereotactic target localization for gamma knife radiosurgery of functional disorders.","volume":"45","author":"Bednarz","year":"1999"},{"key":"b3","series-title":"Neurology","doi-asserted-by":"publisher","first-page":"1564","DOI":"10.1212\/WNL.49.6.1564","article-title":"Pallidal stimulation for Parkinson's disease. 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