Utility of 3D SPACE T2-weighted volumetric sequence in the localization of spinal dural arteriovenous fistula
| Autor: | Santhosh Kumar Kannath, Bejoy Thomas, Kapilamoorthy Tirur Raman, Praveen Alampath, P. Sankara Sarma, Jayadevan Enakshy Rajan |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty Fistula Arteriovenous fistula 030218 nuclear medicine & medical imaging 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine Cohen's kappa medicine Humans Aged Retrospective Studies Central Nervous System Vascular Malformations medicine.diagnostic_test business.industry Angiography Digital Subtraction Reproducibility of Results Retrospective cohort study Magnetic resonance imaging General Medicine Digital subtraction angiography Middle Aged medicine.disease Spinal cord Magnetic Resonance Imaging medicine.anatomical_structure Spinal Cord Angiography Female Radiology business 030217 neurology & neurosurgery |
| Zdroj: | Journal of Neurosurgery: Spine. 25:125-132 |
| ISSN: | 1547-5654 |
| DOI: | 10.3171/2015.8.spine141322 |
| Popis: | OBJECTIVE The aim of this study was to investigate the utility of a heavily T2-weighted volumetric MRI sequence (3D sampling perfection with application-optimized contrasts using different flip-angle evolutions [SPACE]) in the feeder localization of spinal dural arteriovenous fistula (SDAVF). METHODS Patients who were diagnosed with SDAVF and who had 3D SPACE source images available for review were identified from a retrospective review of medical records. A total of 16 patients were identified, and MR images were analyzed separately by 2 blinded observers. The accuracy of the observation and interobserver agreement were measured by Kendall's tau and kappa statistics. RESULTS The site of fistula was accurately predicted by Observers 1 and 2 in 81% and 88% of cases, respectively, which improved to 94% when the level was considered within 1 vertebral level. The observer agreement with gold-standard angiography and interobserver agreement were found to be highly significant (p < 0.0001). CONCLUSIONS The 3D SPACE MRI sequence is valuable in the precise detection of the site of SDAVF. It may help to tailor digital subtraction angiography and thereby reduce the radiation exposure, contrast load, and study time. |
| Databáze: | OpenAIRE |
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