Scholars@Duke

• Background
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  Education, Training, & Certifications

  • M.D., University of Minnesota, Twin Cities 2008
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  Duke Appointment History

  • Clinical Associate in the Department of Radiology, Radiology, Interventional Radiology, Radiology 2016 - 2018
• Research
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  External Relationships

  • Scanslated, Inc.
• Publications & Artistic Works
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  Selected Publications

  • Academic Articles

    • Dai, Rui, Alan A. Sag, Jonathan G. Martin, Nicholas T. Befera, Waleska M. Pabon-Ramos, Paul V. Suhocki, Tony P. Smith, Charles Y. Kim, Andrew J. Muir, and James Ronald. “Proton pump inhibitor use is associated with increased rates of post-TIPS hepatic encephalopathy: Replication in an independent patient cohort.” Clin Imaging 77 (September 2021): 187–92. https://doi.org/10.1016/j.clinimag.2021.04.034.
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    • Swenson, Christopher, Jonathan G. Martin, Tracy Jaffe, Rajan T. Gupta, Alan A. Sag, Nicholas T. Befera, Waleska M. Pabon-Ramos, et al. “Intravascular Ultrasound-Guided Transvenous Biopsy of Abdominal and Pelvic Targets Difficult to Access by Percutaneous Needle Biopsy: Technique and Initial Clinical Experience.” J Vasc Interv Radiol, May 28, 2021. https://doi.org/10.1016/j.jvir.2021.04.029.
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    • Short, Ryan G., Benjamin Wildman-Tobriner, and Nicholas T. Befera. “Potential Pitfalls of Online Crowdsourcing to Assess Patient Comprehension of Radiology Reports.” Ajr Am J Roentgenol 215, no. 6 (December 2020): W65. https://doi.org/10.2214/AJR.20.23249.
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    • Befera, Nicholas T., James Ronald, Charles Y. Kim, and Tony P. Smith. “Spinal Arterial Blood Supply Does Not Arise from the Bronchial Arteries: A Detailed Analysis of Angiographic Studies Performed for Hemoptysis.” J Vasc Interv Radiol 30, no. 11 (November 2019): 1736–42. https://doi.org/10.1016/j.jvir.2019.07.033.
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    • Short, Ryan G., John Bralich, Dave Bogaty, and Nicholas T. Befera. “Comprehensive Word-Level Classification of Screening Mammography Reports Using a Neural Network Sequence Labeling Approach.” J Digit Imaging 32, no. 5 (October 2019): 685–92. https://doi.org/10.1007/s10278-018-0141-4.
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    • Befera, Nicholas, Andrew S. Griffin, and Erik F. Hauck. “Endovascular repair of an acute symptomatic carotid artery dissection through the false dissecting carotid lumen.” Interv Neuroradiol 25, no. 1 (February 2019): 51–53. https://doi.org/10.1177/1591019918798154.
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    • Griffin, Andrew S., Nicholas Befera, and Erik Hauck. “Onyx embolization of a pial AV fistula with a giant venous varix using a flow-directed Scepter balloon catheter: Technical note.” Interv Neuroradiol 24, no. 6 (December 2018): 702–5. https://doi.org/10.1177/1591019918781670.
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    • Short, Ryan G., Nicholas T. Befera, Jenny K. Hoang, and Tina D. Tailor. “A Normal Thyroid by Any Other Name: Linguistic Analysis of Statements Describing a Normal Thyroid Gland from Noncontrast Chest CT Reports.” J Am Coll Radiol 15, no. 11 (November 2018): 1642–47. https://doi.org/10.1016/j.jacr.2018.04.016.
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    • Short, Ryan G., Dana Middleton, Nicholas T. Befera, Raj Gondalia, and Tina D. Tailor. “Patient-Centered Radiology Reporting: Using Online Crowdsourcing to Assess the Effectiveness of a Web-Based Interactive Radiology Report.” J Am Coll Radiol 14, no. 11 (November 2017): 1489–97. https://doi.org/10.1016/j.jacr.2017.07.027.
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    • Hassanpour, Saeed, Curtis P. Langlotz, Timothy J. Amrhein, Nicholas T. Befera, and Matthew P. Lungren. “Performance of a Machine Learning Classifier of Knee MRI Reports in Two Large Academic Radiology Practices: A Tool to Estimate Diagnostic Yield.” Ajr Am J Roentgenol 208, no. 4 (April 2017): 750–53. https://doi.org/10.2214/AJR.16.16128.
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    • Amrhein, T. J., N. T. Befera, L. Gray, and P. G. Kranz. “CT Fluoroscopy-Guided Blood Patching of Ventral CSF Leaks by Direct Needle Placement in the Ventral Epidural Space Using a Transforaminal Approach.” Ajnr Am J Neuroradiol 37, no. 10 (October 2016): 1951–56. https://doi.org/10.3174/ajnr.A4842.
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    • Amrhein, T. J., B. E. Paxton, M. P. Lungren, N. T. Befera, H. R. Collins, C. Yurko, J. D. Eastwood, and R. K. Kilani. “Physician self-referral and imaging use appropriateness: negative cervical spine MRI frequency as an assessment metric.” Ajnr Am J Neuroradiol 35, no. 12 (December 2014): 2248–53. https://doi.org/10.3174/ajnr.A4076.
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    • “Erratum to: Lee CL, Min H, Befera N, et al. Assessing cardiac injury in mice with dual energy-microCT, 4D-microCT, and microSPECT imaging after partial heart irradiation. Int J Radiat Oncol Biol Phys 2014;88:686-693.” Int J Radiat Oncol Biol Phys 89, no. 5 (August 1, 2014): 1145. https://doi.org/10.1016/j.ijrobp.2014.03.010.
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    • Befera, Nicholas T., Cristian T. Badea, and G Allan Johnson. “Comparison of 4D-microSPECT and microCT for murine cardiac function.” Mol Imaging Biol 16, no. 2 (April 2014): 235–45. https://doi.org/10.1007/s11307-013-0686-z.
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    • Ashton, Jeffrey R., Nicholas Befera, Darin Clark, Yi Qi, Lan Mao, Howard A. Rockman, G Allan Johnson, and Cristian T. Badea. “Anatomical and functional imaging of myocardial infarction in mice using micro-CT and eXIA 160 contrast agent.” Contrast Media Mol Imaging 9, no. 2 (March 2014): 161–68. https://doi.org/10.1002/cmmi.1557.
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    • Lee, Chang-Lung, Hooney Min, Nicholas Befera, Darin Clark, Yi Qi, Shiva Das, G Allan Johnson, Cristian T. Badea, and David G. Kirsch. “Assessing cardiac injury in mice with dual energy-microCT, 4D-microCT, and microSPECT imaging after partial heart irradiation.” Int J Radiat Oncol Biol Phys 88, no. 3 (March 1, 2014): 686–93. https://doi.org/10.1016/j.ijrobp.2013.11.238.
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    • Huang, Steven Y., Charles Y. Kim, Michael J. Miller, Rajan T. Gupta, Mark L. Lessne, Jeffrey J. Horvath, Daniel T. Boll, et al. “Abdominopelvic and lower extremity deep venous thrombosis: evaluation with contrast-enhanced MR venography with a blood-pool agent.” Ajr Am J Roentgenol 201, no. 1 (July 2013): 208–14. https://doi.org/10.2214/AJR.12.9611.
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  • Conference Papers

    • Badea, C. T., N. Befera, D. Clark, Y. Qi, and G. A. Johnson. “Dual-energy micro-CT imaging of pulmonary airway obstruction: Correlation with micro-SPECT.” In Progress in Biomedical Optics and Imaging  Proceedings of Spie, Vol. 9038, 2014. https://doi.org/10.1117/12.2043094.
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