Time-Resolved Spinal MR Angiography: Initial Clinical Experience in the Evaluation of Spinal Arteriovenous Shunts

Saad, Ali; Cashen, Ty A.; Carroll, Timothy J.; McComb, Erin N.; Muzaffar, Marium; Shaibani, Ali; Walker, Matthew T.

doi:10.3174/ajnr.a0639

Cited by 45 publications

(40 citation statements)

References 14 publications

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“…Ali et al 23 described the use of a TR-MRA (TRICKS) sequence to predict the level of SDAVF to within 1 vertebral level in 6 patients. The authors also suggested that the technique was accurate for excluding the presence of SDAVFs and in confirming successful fistula occlusion following treatment.…”

Section: Discussionmentioning

confidence: 99%

Time-Resolved Contrast-Enhanced MR Angiography of Spinal Vascular Malformations

Amarouche¹,

Hart

Siddiqui

et al. 2014

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE:The diagnosis of spinal vascular malformations may be challenging on conventional MR imaging because neither the location of the signal abnormality in the spinal cord nor the level of the abnormal flow voids correlates with the level of the fistula. We conducted a retrospective evaluation of the utility of using a time-resolved imaging of contrast kinetics sequence in the diagnosis, characterization, and localization of spinal vascular malformations, comparing it with the criterion standard of spinal DSA.

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Section: Discussionmentioning

confidence: 99%

Time-Resolved Contrast-Enhanced MR Angiography of Spinal Vascular Malformations

Amarouche¹,

Hart

Siddiqui

et al. 2014

AJNR Am J Neuroradiol

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“…However, spinal angiography is invasive and associated with several risks 2) . Recanalization or collateral development should be considered and confirmed by spinal angiography in patients whose symptoms recur or become aggravated during the early follow-up period after embolization therapy.…”

Section: Follow-up Strategymentioning

confidence: 99%

Spinal Dural Arteriovenous Fistulas: Clinical Experience with Endovascular Treatment as a Primary Therapeutic Modality

Park

Han

Jahng

et al. 2008

J Korean Neurosurg Soc

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“…Other published reports demonstrating high sensitivity and reasonably high specificity of dynamic Gd-enhanced MRA for detection of spinal DAVFs support this assertion. 3,10,26 Clinical history and the suspicion of a spinal DAVF should ultimately remain the deciding factors that determine whether one should proceed with spinal angiography. However, in cases involving patients who do not present with diagnostic MRI findings or typical symptoms of a spinal DAVF, MRA examination may provide compelling evidence to go on to invasive conventional angiography.…”

Section: Discussionmentioning

confidence: 99%

Absence of abnormal vessels in the subarachnoid space on conventional magnetic resonance imaging in patients with spinal dural arteriovenous fistulas

Miller

Eskey

Mamourian

2012

FOC

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Spinal dural arteriovenous fistula (DAVF) is an uncommon condition that can be difficult to diagnose. This often results in misdiagnosis and treatment delay. Although conventional MRI plays an important role in the initial screening for the disease, the typical MRI findings may be absent. In this article, the authors present a series of 4 cases involving patients with angiographically proven spinal DAVFs who demonstrated cord T2 prolongation on conventional MRI but without abnormal subarachnoid flow voids or enhancement. These cases suggest that spinal DAVF cannot be excluded in symptomatic patients with cord edema based on conventional MRI findings alone. Dynamic Gd-enhanced MR angiography (MRA) was successful in demonstrating abnormal spinal vasculature in all 4 cases. This limited experience provides support for the role of spinal MRA in patients with abnormal cord signal and symptoms suggestive of DAVF even when typical MRI findings of a DAVF are absent.

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Time-Resolved Spinal MR Angiography: Initial Clinical Experience in the Evaluation of Spinal Arteriovenous Shunts

Abstract: BACKGROUND AND PURPOSE:Spinal arteriovenous shunts usually require digital subtraction angiography (DSA) for evaluation. We report a unique time-resolved spinal MR angiographic (TRSMRA) technique with a temporal resolution of 3-6 seconds and spatial resolution of approximately 1 mm

Cited by 45 publications

References 14 publications

Time-Resolved Contrast-Enhanced MR Angiography of Spinal Vascular Malformations

Time-Resolved Contrast-Enhanced MR Angiography of Spinal Vascular Malformations

Spinal Dural Arteriovenous Fistulas: Clinical Experience with Endovascular Treatment as a Primary Therapeutic Modality

Absence of abnormal vessels in the subarachnoid space on conventional magnetic resonance imaging in patients with spinal dural arteriovenous fistulas

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