{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T06:39:02Z","timestamp":1776753542826,"version":"3.51.2"},"reference-count":10,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SPI"],"published-print":{"date-parts":[[2014,12]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>Accurate intraoperative localization of small intradural extramedullary thoracolumbar (T-1 to L-3 level) spinal cord tumors is vital when minimally invasive techniques, such as hemilaminectomy, are used to excise these lesions. In this study, the authors describe a simple and effective method of preoperative MRI localization of small intradural extramedullary tumors using cod liver oil capsules.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>Thirty-five patients with intradural tumors underwent preoperative MRI localization the evening prior to surgery. Patients were positioned prone in the MRI gantry, mimicking the intraoperative position. Nine capsules were placed in 3 rows to cover the lesion. This localization was used to guide the level for a minimally invasive approach using a hemilaminectomy to excise these tumors.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>The mean patient age was 51.5 \u00b1 14.3 years, and the mean body mass index was 24.1 \u00b1 3.5 kg\/m<jats:sup>2<\/jats:sup>. Twenty-two tumors involved the thoracic spine, and 13 involved the upper lumbar spine from L-1 to L-3. The mean tumor size was 2.2 \u00b1 1.0 cm. Localization was accurate in 34 patients (97.1%).<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Accurate localization with the described method is quick, safe, cost-effective, and noninvasive with no exposure to radiation. It also reduces operating time by eliminating the need for intraoperative fluoroscopy.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2014.9.spine14199","type":"journal-article","created":{"date-parts":[[2014,10,17]],"date-time":"2014-10-17T14:01:07Z","timestamp":1413554467000},"page":"882-885","source":"Crossref","is-referenced-by-count":8,"title":["Magnetic resonance imaging localization with cod liver oil capsules for the minimally invasive approach to small intradural extramedullary tumors of the thoracolumbar spine"],"prefix":"10.3171","volume":"21","author":[{"given":"Mazda K.","family":"Turel","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vedantam","family":"Rajshekhar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-spine14199","series-title":"Neurosurg Q","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1097\/WNQ.0b013e31825a693f","article-title":"Accuracy of marker placement by magnetic resonance imaging in the determination of the incision site in lumbar disc surgeries","volume":"23","author":"Daghighi","year":"2013"},{"key":"b2-spine14199","series-title":"Br J Radiol","doi-asserted-by":"publisher","first-page":"813","DOI":"10.1259\/0007-1285-67-800-813","article-title":"Technical note: a simple method for skin\/lesion localization using magnetic resonance imaging","volume":"67","author":"English","year":"1994"},{"key":"b3-spine14199","series-title":"World Neurosurg","doi-asserted-by":"publisher","first-page":"585","DOI":"10.1016\/j.wneu.2012.03.017","article-title":"A survey-based study of wrong-level lumbar spine surgery: the scope of the problem and current practices in place to help avoid these errors","volume":"79","author":"Groff","year":"2013"},{"key":"b4-spine14199","series-title":"J Spinal Disord Tech","doi-asserted-by":"publisher","first-page":"72","DOI":"10.1097\/BSD.0b013e3181493194","article-title":"Intraoperative localization of thoracic spine level with preoperative percutaneous placement of intravertebral polymethylmethacrylate","volume":"21","author":"Hsu","year":"2008"},{"key":"b5-spine14199","series-title":"Br J Neurosurg","doi-asserted-by":"publisher","first-page":"74","DOI":"10.1080\/02688690500089209","article-title":"Spinous process marking: a reliable method for preoperative surface localization of intradural lesions of the high thoracic spine","volume":"19","author":"Paolini","year":"2005"},{"key":"b6-spine14199","series-title":"Surg Neurol","doi-asserted-by":"publisher","first-page":"346","DOI":"10.1016\/S0090-3019(02)00863-7","article-title":"Skin markers for surgical planning for intradural lesions of the thoracic spine. 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