RT Journal Article
SR Electronic
T1 Temporal Characteristics of CSF-Venous Fistulas on Digital Subtraction Myelography
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 492
OP 495
DO 10.3174/ajnr.A7809
VO 44
IS 4
A1 Mark, I.
A1 Madhavan, A.
A1 Oien, M.
A1 Verdoorn, J.
A1 Benson, J.C.
A1 Cutsforth-Gregory, J.
A1 Brinjikji, W.
A1 Morris, P.
YR 2023
UL http://www.ajnr.org/content/44/4/492.abstract
AB BACKGROUND AND PURPOSE: CSF-venous fistula can be diagnosed with multiple myelographic techniques; however, no prior work has characterized the time to contrast opacification and the duration of visualization. The purpose of our study was to evaluate the temporal characteristics of CSF-venous fistula on digital subtraction myelography.MATERIALS AND METHODS: We reviewed the digital subtraction myelography images of 26 patients with CSF-venous fistulas. We evaluated how long the CSF-venous fistula took to opacify after contrast reached the spinal level of interest and how long it remained opacified. Patient demographics, CSF-venous fistula treatment, brain MR imaging findings, CSF-venous fistula spinal level, and CSF-venous fistula laterality were recorded.RESULTS: Eight of the 26 CSF-venous fistulas were seen on both the upper- and lower-FOV digital subtraction myelography, for a total of 34 CSF-venous fistula views evaluated on digital subtraction myelography. The mean time to appearance was 9.1 seconds (range, 0–30 seconds). Twenty-two (84.6%) of the CSF-venous fistulas were on the right. The highest fistula level was C7, while the lowest was T13 (13 rib-bearing vertebral bodies). The most common CSF-venous fistula levels were T6 (4 patients) followed by T8, T10, and T11 (3 patients each). The mean age was 58.3 years (range, 31.7–87.6 years). Sixteen patients were women (61.5%).CONCLUSIONS: This is the first study to report the temporal characteristics of CSF-venous fistulas using digital subtraction myelography. We found that on average, the CSF-venous fistula appeared 9.1 seconds (range, 0–30 seconds) after intrathecal contrast reached the spinal level.CTMCT myelographyCVFCSF-venous fistulaDSMdigital subtraction myelographySIHspontaneous intracranial hypotension