{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T02:20:39Z","timestamp":1792203639956,"version":"4.4.0"},"reference-count":16,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2009,10]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>Hemifacial spasm is a clinical syndrome caused by vascular compression of the facial nerve in the cerebellopontine angle, which can be relieved by surgical intervention. Advances in medical imaging technology allow for direct visualization of the offending blood vessels in hemifacial spasm and similar conditions (such as trigeminal neuralgia). The utility of high resolution 3D MR angiography and 3D spoiled-gradient recalled (SPGR) imaging sequences for surgical decision-making in hemifacial spasm, as measured by sensitivity, specificity, and positive and negative predictive values, has not been previously determined.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>A retrospective review was undertaken of 23 patients with hemifacial spasm who underwent operations between January 2001 and December 2006 at Oregon Health &amp; Science University. All patients underwent preoperative high-resolution 3D MR angiography and 3D SPGR imaging. The sensitivity of the SPGR imaging\/MR angiography interpretation of neurovascular compression (NVC) by both a neurosurgeon and 2 neuroradiologists was determined in relation to the presence of actual NVC during surgery.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>All patients were found to have NVC at surgery. After review by a neurosurgeon and 2 neuroradiologists, imaging data from 19 of the 23 patients were evaluated. The neurosurgeon's interpretation had a sensitivity of 79% and a positive predictive value (PPV) of 100%. The first neuroradiologist's interpretation had a sensitivity of 21% with a PPV of 100%. Further interpretation by a blinded second neuroradiologist with expertise in MR imaging of hemifacial spasm and trigeminal neuralgia was conducted, and sensitivity was 59% and PPV was 100%. Specificity was not determined because there were no true negative cases. The negative predictive value was 0% for both the neurosurgeon's and neuroradiologists' evaluations.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Although high-resolution 3D MR angiography and 3D SPGR imaging was helpful in providing information about the anatomical relationship of cranial nerve VII and surrounding blood vessels, the authors determined that in the case of hemifacial spasm these types of imaging did not influence preoperative surgical decisionmaking.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2009.3.jns08393","type":"journal-article","created":{"date-parts":[[2009,4,24]],"date-time":"2009-04-24T14:03:55Z","timestamp":1240581835000},"page":"733-736","source":"Crossref","is-referenced-by-count":23,"title":["Sensitivity of high-resolution three-dimensional magnetic resonance angiography and three-dimensional spoiled-gradient recalled imaging in the prediction of neurovascular compression in patients with hemifacial spasm"],"prefix":"10.3171","volume":"111","author":[{"given":"Ahmed M.","family":"Raslan","sequence":"first","affiliation":[{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reynaldo","family":"DeJesus","sequence":"additional","affiliation":[{"name":"Departments of Neurological Surgery and"},{"name":"Hospital San Lucas, Ponce, Puerto Rico; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caglar","family":"Berk","sequence":"additional","affiliation":[{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Zacest","sequence":"additional","affiliation":[{"name":"Departments of Neurological Surgery and"},{"name":"Department of Neurosurgery, Royal Adelaide Hospital, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jim C.","family":"Anderson","sequence":"additional","affiliation":[{"name":"Radiology, Oregon Health & Science University, Portland, Oregon;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kim J.","family":"Burchiel","sequence":"additional","affiliation":[{"name":"Departments of Neurological Surgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-1110733","series-title":"Ann Neurol","first-page":"502","article-title":"Hemifacial spasm: evaluation by magnetic resonance imaging and magnetic resonance tomographic angiography","volume":"32","author":"Adler","year":"1992"},{"key":"b2-1110733","series-title":"J Neurosurg","first-page":"201","article-title":"Microvascular decompression for hemifacial spasm","volume":"82","author":"Barker","year":"1995"},{"key":"b3-1110733","series-title":"Neurosurg Rev","first-page":"131","article-title":"Is preoperative high-resolution magnetic resonance imaging accurate in predicting neurovascular compression in patients with trigeminal neuralgia? A single-blind study","volume":"28","author":"Benes","year":"2005"},{"key":"b4-1110733","series-title":"J Neurosurg","first-page":"342","article-title":"Hemifacial spasm: a note on the etiology in two cases","volume":"4","author":"Campbell","year":"1947"},{"key":"b5-1110733","series-title":"J Neurosurg","first-page":"240","article-title":"Hemifacial spasm\u2014a reversible pathophysiologic state","volume":"19","author":"Gardner","year":"1962"},{"key":"b6-1110733","series-title":"Neuroradiology","first-page":"46","article-title":"Three-dimensional MRI of hemifacial spasm with surgical correlation","volume":"39","author":"Girard","year":"1997"},{"key":"b7-1110733","article-title":"Manual of Disease of the Nervous System","author":"Gowers","year":"1884"},{"issue":"Suppl","key":"b8-1110733","series-title":"J Neurosurg","first-page":"S159","article-title":"Arterial compression of the trigeminal nerve at the pons in patients with trigeminal neuralgia","volume":"26","author":"Jannetta","year":"1967"},{"key":"b9-1110733","series-title":"Neurochirurgia (Stuttg)","first-page":"145","article-title":"Observations on the etiology of trigeminal neuralgia, hemifacial spasm, acoustic nerve dysfunction and glossopharyngeal neuralgia. Definitive microsurgical treatment and results in 117 patients","volume":"20","author":"Jannetta","year":"1977"},{"key":"b10-1110733","series-title":"Bull Los Angeles Neurol Soc","first-page":"93","article-title":"Transtentorial retrogasserian rhizotomy in trigeminal neuralgia by microneurosurgical technique","volume":"31","author":"Jannetta","year":"1966"},{"key":"b11-1110733","series-title":"Neurosurgery","first-page":"767","article-title":"Hemifacial spasm in young people treated with microvascular decompression of the facial nerve","volume":"20","author":"Jho","year":"1987"},{"key":"b12-1110733","series-title":"Surg Neurol","first-page":"178","article-title":"Threedimensional imaging for presentation of the causative vessels in patients with hemifacial spasm and trigeminal neuralgia","volume":"47","author":"Kumon","year":"1997"},{"key":"b13-1110733","series-title":"Neurol Med Chir (Tokyo)","first-page":"884","article-title":"Hemifacial spasm due to compression of the facial nerve by vertebral artery-posterior inferior cerebellar artery aneurysm and elongated vertebral artery\u2014case report","volume":"36","author":"Moriuchi","year":"1996"},{"key":"b14-1110733","series-title":"Ophthal Plast Reconstr Surg","first-page":"72","article-title":"Advanced magnetic resonance imaging techniques for patients with hemifacial spasm","volume":"18","author":"Port","year":"2002"},{"key":"b15-1110733","series-title":"Surg Neurol","first-page":"329","article-title":"Gardner neurovascular decompression of the trigeminal and facial nerves for tic douloureux and hemifacial spasm","volume":"16","author":"Rand","year":"1981"},{"key":"b16-1110733","series-title":"Surg Neurol","first-page":"251","article-title":"Hemifacial spasm: a review","volume":"36","author":"Wilkins","year":"1991"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/111\/4\/article-p733.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/111\/4\/article-p733.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/111\/4\/article-p733.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T09:24:19Z","timestamp":1679909059000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/111\/4\/article-p733.xml"}},"subtitle":["Clinical article"],"short-title":[],"issued":{"date-parts":[[2009,10]]},"references-count":16,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.3171\/2009.3.jns08393","relation":{},"ISSN":["0022-3085","1933-0693"],"issn-type":[{"value":"0022-3085","type":"print"},{"value":"1933-0693","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,10]]}}}