Dr. Andrew Callen

Publications



Carlton Jones L, Ryan D, Lützen N, Mamlouk MD, Callen AL, Scoffings D, Kranz PG. Advanced CT Myelography for Spontaneous Spinal CSF Leaks. Radiographics. Accepted for publication. Accepted manuscript; PubMed record not yet available.

Helal A, Moseley R, Callen AL, Lennarson P. Safety and Post-Operative Outcomes Following Nerve Root Ligation and Transection for Patients with CSF-Venous Fistula. Journal of Neurosurgery. Accepted for publication. Accepted manuscript; PubMed record not yet available.

Callen AL, Jenkins K. Imaging and Physiology Across the High-Low Cerebrospinal Fluid Pressure Spectrum: Navigating Diagnostic Uncertainty in Headache Practice. Headache. 2026. PMID: 41933933.

Callen AL, Montes D, Amrhein TJ, Beck J, Barvulsky E, Bhaumik D, Boyke AE, Cagnazzo F, Carlton Jones L, Dobrocky T, Kranz PG, Lennarson P, Madhavan A, Mamlouk MD, Mark IT, Maya M, Piechowiak EI, Schievink WI, Volz F, Wolf K, Urbach H, Lützen N. Sacral Dural Tears in Spontaneous Intracranial Hypotension: Imaging Phenotype and Treatment Outcomes in a Multicenter Cohort. AJNR Am J Neuroradiol. 2026. PMID: 41839613.

Habibi P, Callen AL, Verdoorn J, Benson J, Madhavan A, Salehi S, Cutsforth-Gregory J, Mark I. Chiari Decompression in Patients with Spontaneous Intracranial Hypotension: Presenting Symptoms and Treatment Response. AJNR Am J Neuroradiol. 2026. PMID: 41654330.

Campbell C, Montes D, Bhaumik D, Lennarson P, Callen AL. The Association of Spinal Meningeal Diverticula Number and Size with the Detection of CSF-Venous Fistulas: Evidence from a Contemporary Myelography Cohort. AJNR Am J Neuroradiol. 2025. PMID: 41386989.

Puello Baron M, Trivedi P, Kerrigan K, Walters A, Bhaumik D, Lennarson P, Callen AL. Disparities in Access to Specialized Care for Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol. 2025. PMID: 41062183.

Sunshine A, Honce GH, Callen AL, Zander DA, Tanabe JL, Pisani Petrucci SL, Lin CT, Honce JM. Evaluating the Quality and Understandability of Radiology Report Summaries Generated by ChatGPT: Survey Study. JMIR Form Res. 2025;9:e76097. PMID: 40864905.

Petrucci S, Bhaumik D, Callen AL. Technical Aspects of Dynamic CT Myelography: Optimizing Patient Positioning for the Detection of CSF Leaks. AJNR Am J Neuroradiol. 2025;46(9):1952. PMID: 40675809.

Callen AL, Montes D, Bhaumik D, Lennarson P, Mamlouk MD, Lützen N, Beck J, Urbach H, Scoffings D, Butteriss D, Carlton Jones L. Outcomes of CT-Guided Targeted Epidural Patching for Lateral Dural Tears in Spontaneous Intracranial Hypotension: A Multicenter Retrospective Cohort Study. AJNR Am J Neuroradiol. 2025. PMID: 40541530.

Mecum AV, Kleinschmidt-DeMasters BK, Bhaumik D, Pisani Petrucci SL, Lennarson PJ, Callen AL. Histopathologic Analysis of 5 Patients with CSF-Venous Fistulas after Surgical Nerve Root Ligation and Resection. AJNR Am J Neuroradiol. 2025;46(10):1967-1971. PMID: 40210461.

Callen AL, Khanwalkar AR, Cunningham ML, Pisani Petrucci SL, Bhaumik D, Wilhour D, Trivedi P, Lennarson P, Zander DA. Revisiting a Rare Anomaly Described 25 Years Ago in the AJNR: A Journey from Pediatric Hemifacial Microsomia and Middle Cranial Fossa Aplasia to CSF-Lymphatic Fistula and Spontaneous Intracranial Hypotension as an Adult. AJNR Am J Neuroradiol. 2025;46(10):2208-2213. PMID: 40147836.

Callen AL, Pisani Petrucci SL, Bhaumik D, Lennarson P, Birlea M, MacKenzie J, Ettenberg J, Carlton Jones L. Enhancing Clarity in Dynamic Myelography Reporting: Results of a Survey of Patients and Referring Providers Evaluating a Standardized Reporting System in the Myelographic Work-Up of Patients with Suspected Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol. 2025;46(10):2200-2207. PMID: 40139902.

Callen AL, Pisani Petrucci SL, Lennarson P, Sedrak MF, Gutierrez A, Mamlouk MD. Efficacy of Traditional Epidural Patching versus Patching within Spinal Longitudinal Extradural Collections for Ventral Dural Cerebrospinal Fluid Leaks. Radiology. 2025;314(3):e242194. PMID: 40131109.

Montes D, Pisani Petrucci SL, Bhaumik D, Andonov N, Lennarson P, Callen AL. Patterns of Epidural Patch Distribution: The Influence of Spinal Level, Injection Technique, and Patch Volume/Composition on Craniocaudal and Ventral Epidural Dispersion. AJNR Am J Neuroradiol. 2025;46(9):1931-1938. PMID: 40000121.

Kranz PG, Amrhein TJ, Brinjikji W, Callen AL, Carroll I, Chazen JL, Cutsforth-Gregory J, Friedman DI, Hutchins TA, Lehman VT, Madhavan AA, Mamlouk MD, Mark IT, Maya MM, Moser FG, Parikh SK, Schievink WI, Shah LM, Shah VN, Thaker AA, Jordan JE. Consensus Guidelines on Diagnostic Brain and Spine Imaging of Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol. 2025;46(12):2457-2467. doi:10.3174/ajnr.A9017. PubMed record not yet available.

Petrucci SL, Andonov N, Lennarson P, Birlea M, O’Brien C, Wilhour D, Anderson A, Bennett J, Callen AL. Assessing the Diagnostic Value of Brain White Matter Hyperintensities and Clinical Symptoms in Predicting the Detection of CSF-Venous Fistula in Patients with Suspected Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol. 2025;46(5):1036-1043. PMID: 39443147.

Madhavan A, Kranz P, Carlton Jones L, Ahn E, Amrhein T, Brinjikji W, Callen AL, Cutsforth-Gregory J, Mamlouk M, Silvera VM, Guerin J. Spontaneous Intracranial Hypotension in Children: A Multi-Institutional Review of Spinal CSF Leaks Localized on Advanced Myelography. AJNR Am J Neuroradiol. 2024;45(12):1921-1927. PMID: 39555913.

Mamlouk MD, Callen AL, Madhavan A, Lützen N, Carlton Jones L, Mark I, Brinjikji W, Benson J, Verdoorn J, Kim DK, Amrhein T, Gray L, Dillon W, Maya M, Huynh T, Shah V, Dobrocky T, Piechowiak E, Chazen J, Malinzak M, Houk J, Kranz P. Spinal CSF Leaks: The Neuroradiologist Transforming Care. AJNR Am J Neuroradiol. 2024;45(11):1613-1620. PMID: 39209484.

Callen AL, Han L, Pisani Petrucci S, Andonov N, Lennarson P, Birlea M, O’Brien C, Wilhour D, Anderson A, Bennett J, Carroll I. Patterns of Clinical and Imaging Presentations in Patients with Spontaneous Intracranial Hypotension due to Spinal Cerebrospinal Fluid Venous Fistula: A Single-Center Retrospective Cross-Sectional Study. Headache. 2024;64(8):939-949. PMID: 39129307.

Carroll I, Han L, Zhang N, Cowan R, Lanzman B, Hashmi S, Barad M, Peretz A, Moskatel L, Ogunlaja O, Hah J, Hindiyeh N, Barch C, Bozkurt S, Hernandez-Boussard T, Callen AL. Long-Term Epidural Patching Outcomes and Predictors of Benefit in Patients With Suspected CSF Leak Nonconforming to ICHD-3 Criteria. Neurology. 2024;102(12):e209449. PMID: 38820488.

Sechrist E, Pisani Petrucci S, Andonov N, Lennarson P, Callen AL. The Spatial Relationship between Spinal Osteoarthritis and CSF Venous Fistulas in Patients with Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol. 2024;45(7):957-960. PMID: 38697794.

Callen AL, Pisani Petrucci S, Lennarson P, Birlea M, MacKenzie J, Buchanan A; the “Spinal CSF Leak: Bridging the Gap” Study Group. Perspectives from the Inaugural “Spinal CSF Leak: Bridging the Gap” Conference: A Convergence of Clinical and Patient Expertise. AJNR Am J Neuroradiol. 2024;45(7):841-849. PMID: 38697790.

Callen AL, Friedman DI, Parikh S, Rau J, Schievink W, Cutsforth-Gregory J, Amrhein T, Haight E, Cowan R, Barad M, Hah J, Jackson T, Deline C, Buchanan A, Carroll I. Diagnosis and Treatment of Spontaneous Intracranial Hypotension: Role of Epidural Blood Patching. Neurol Clin Pract. 2024;14(3):e200290. PMID: 38699599.

Carroll I, Callen AL. Beyond Myths: Transformative Insights into Spinal Cerebrospinal Fluid Leaks and Their Role in Persistent Headache Syndromes. Headache. 2024;64(3):229-232. doi:10.1111/head.14677. PubMed record not yet available.

Callen AL, Fakhri M, Timpone VM, Thaker AA, Dillon WP, Shah VN. Temporal Characteristics of CSF-Venous Fistulas on Dynamic Decubitus CT Myelography: A Retrospective Multi-Institution Cohort Study. AJNR Am J Neuroradiol. 2024;45(1):100-104. PMID: 38123910.

Callen AL, Wojcik R, Bojanowski M. A Novel Patient-Positioning Device for Dynamic CT Myelography. AJNR Am J Neuroradiol. 2023;44(11):1352-1355. PMID: 37827715.

Callen AL, Carlton Jones L, Timpone V, Pattee J, Scoffings D, Butteriss D, Huynh T, Shen P, Mamlouk M. Factors Predictive of Treatment Success in CT-Guided Fibrin Occlusion of CSF-Venous Fistulas: A Multicenter Retrospective Cross-Sectional Study. AJNR Am J Neuroradiol. 2023;44(11):1332-1338. AJNR Editor’s Choice Award. PMID: 37798111.

Callen AL, Lennarson P, Carroll I. A Causative Role for Remote Dural Puncture and Resultant Arachnoid Bleb in New Daily Persistent Headache: A Case Report. Headache. 2023;63(7):981-983. PMID: 37358488.

Callen A, Pattee J, Thaker AA, Timpone VM, Zander D, Turner R, Birlea M, Wilhour D, O’Brien C, Evan J, Grassia F, Carroll I. Relationship of Bern Score, Spinal Elastance, and Opening Pressure in Patients With Spontaneous Intracranial Hypotension. Neurology. 2023;100(22):e2237-e2246. PMID: 37015821.

Turner R, Zander D, Thaker A, Timpone V, Callen AL. Structured Reporting for Findings of Spontaneous Intracranial Hypotension on Brain MRI. AJR Am J Roentgenol. 2023;221(2):282-283. PMID: 36919883.

Callen AL, Dillon W, Shah V. Unusual Neuroimaging Findings in Spontaneous Intracranial Hypotension. Neuroradiology. 2023. PubMed record not yet available.

Callen AL, Timpone V, Schwertner A, Zander D, Grassia F, Lennarson P, Seinfeld J, Lillehei K, Birlea M, Thaker A. Algorithmic Multimodality Approach to Diagnosis and Treatment of Spinal CSF Leak and Venous Fistula in Patients With Spontaneous Intracranial Hypotension. AJR Am J Roentgenol. 2022;219(2):292-301. doi:10.2214/AJR.22.27485. PubMed record not yet available.

Department of Radiology

CU Anschutz

Leprino Building

12401 East 17th Avenue

Aurora, CO 80045


720-848-0000

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