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  • Title: Feasibility and potential value of flat-panel detector-based computed tomography in myelography after spinal surgery.
    Author: Kau T, Rabitsch E, Celedin S, Jeschofnig B, Illiasch H, Eicher W, Uhl E, Honl M, Hausegger KA.
    Journal: J Neurosurg Spine; 2009 Jan; 10(1):66-72. PubMed ID: 19119936.
    Abstract:
    OBJECT: The purpose of this study was to assess the value of myelography using flat-panel detector-based computed tomography (fpCT) in 5 patients in whom the image quality of multislice CT (MSCT) or MR imaging was limited by metal artifacts. METHODS: The application of fpCT to myelographic imaging of the lumbar spine and cervicothoracic junction after surgery was feasible. Multiplanar, preferably sagittal, and 3D reconstructions adequately depicted disc space implants and provided high resolution images of osseous structures. RESULTS: The images obtained with fpCT allowed evaluation of anatomical details such as single nerve roots and proved especially valuable in a patient with impaired MR imaging results caused by metal artifacts from an intraoperative abrasion. In a case of recurrent disc herniation, imaging results of myelographic fpCT and MSCT scanning were in good agreement. CONCLUSIONS: The novel imaging technique the authors describe yielded adequate results in patients with a history of spinal surgery, may be superior to MSCT scanning in depicting osseous structures and metallic implants, and has the potential to provide multilevel spinal images. Myelographic fpCT scanning may be the preferred modality in patients with expected or known metal artifacts on myelographic MSCT scans and/or MR images.
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