title: Magnetic resonance imaging artifact following acoustic neurofibroma surgery--case report.
abstract: Metallic artifacts in magnetic resonance (MR) imaging occur mostly in patients who have received an implant at surgery. Similar artifacts are now increasingly recognized in patients in whom high-speed drills have been used. A 15-year-old male with neurofibromatosis 2 had undergone excision of acoustic neurofibroma on the left 1.5 years prior to the present admission. MR imaging to evaluate the acoustic neurofibroma on the right showed a metallic artifact at the site of the previous surgery. Computed tomography did not show any evidence of metal debris. The artifact was probably caused by metallic dust or debris from a high-speed drill during the first surgery. We suggest that care should be taken to prevent deposition of such debris in the operative field to prevent this complication.
authors.affiliation: Dr. A. Lakshmipathi Neurosurgical Centre, VHS Medical Centre, Madras, India.
authors.forename: K
authors.initials: K
authors.lastname: Sridhar
authors.forename: R
authors.initials: R
authors.lastname: Ramamurthi
authors.forename: M C
authors.initials: MC
authors.lastname: Vasudevan
authors.forename: B
authors.initials: B
authors.lastname: Ramamurthi
mesh_terms: D000293:Adolescent; D016477:Artifacts; D002530:Cerebellopontine Angle / Q000473:pathology; D003399:Craniotomy / Q000295:instrumentation; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008670:Metals; D009464:Neuroma, Acoustic / Q000175:diagnosis / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis*; D013525:Surgical Instruments
chemical_list: D008670:Metals