Ajay Madhavan

Journal article AJNR Am J Neuroradiol · July 17, 2026 Photon counting detector CT is a relatively nascent technology with numerous developing applications in neuroradiology. Its novel x-ray detection mechanism confers several advantages, including higher spatial resolution, inherent spectral sensitivity, and ... Full text Link to item Cite

CSF-venous Fistulas Arising in the Absence of Nerve Root Sleeve Diverticula: A Multi-Center Review.

Journal article AJNR Am J Neuroradiol · June 24, 2026 CSF-venous fistulas are an increasingly recognized cause of spontaneous intracranial hypotension. Most CSF-venous fistulas arise from meningeal diverticula along the nerve root sleeves. Therefore, the presence of diverticula on spine MRI may serve as an im ... Full text Link to item Cite

Photon-Counting Detector CTA for Localization of the Artery of Adamkiewicz.

Journal article AJNR Am J Neuroradiol · June 3, 2026 Photo-counting detector CT is a relatively new technology that is becoming increasingly prevalent. In recent years, photon-counting CT has been shown to have benefits in numerous neuroradiologic clinical applications, including temporal bone imaging, detec ... Full text Link to item Cite

Direct Injection of Meningeal Diverticula for Localization of CSF-Venous Fistulas: Technique and Clinical Applications.

Journal article AJNR Am J Neuroradiol · May 29, 2026 The recognition of CSF-venous fistulas as a cause of spontaneous intracranial hypotension has increased dramatically in recent years, in large part due to the more pervasive use of lateral decubitus myelography. Lateral decubitus positioning is critical fo ... Full text Link to item Cite

CSF-Venous Fistulas Occurring in First-Degree Relatives: A Multicenter Case Series.

Journal article AJNR Am J Neuroradiol · April 2, 2026 CSF-venous fistulas are a common cause of spontaneous intracranial hypotension. Though these fistulas are increasingly recognized and diagnosed, their risk factors and pathogenesis remain incompletely understood. Previous studies have elucidated many nonhe ... Full text Link to item Cite

Evaluation of the C1-C2 False Localizing Sign in Spontaneous Intracranial Hypotension: Prevalence and Clinical Insights.

Journal article AJNR Am J Neuroradiol · March 25, 2026 BACKGROUND AND PURPOSE: Dural tears are a major cause of spontaneous intracranial hypotension. The existence of a dural tear can be inferred by the presence of extradural CSF on spine MRI. However, extradural CSF usually spans multiple spinal levels, precl ... Full text Link to item Cite

Enhancing the Characterization of Dural Tears on Photon-Counting CT Myelography: An Analysis of Reconstruction Techniques.

Journal article AJNR Am J Neuroradiol · February 3, 2026 Photon-counting detector CT myelography is an effective technique for the localization of spinal CSF leaks. The initial studies describing this technique used a relatively smooth Br56 kernel. However, subsequent studies have demonstrated that the use of th ... Full text Link to item Cite