Scholars@Duke

• Background
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  Education, Training, & Certifications

  • M.D., University of Minnesota, Twin Cities 2008
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  Previous Appointments & Affiliations

  • 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

    • Pung, Leland, James S. Ronald, Nicholas T. Befera, Brendan C. Cline, and Jonathan G. Martin. “Utility of CBCT and AVD for intraprocedural diagnosis and treatment of lower GI bleeding.” Clin Imaging 94 (February 2023): 103–7. https://doi.org/10.1016/j.clinimag.2022.11.016.
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    • Ronald, James, Charles Y. Kim, Meghana Konanur, Rui Dai, Nicholas Befera, James Knutson, and Brendan C. Cline. “Coaxial Stent Graft inside a Constraining Stent for Transjugular Intrahepatic Portosystemic Shunt Reduction.” J Vasc Interv Radiol 33, no. 12 (December 2022): 1513-1518.e1. https://doi.org/10.1016/j.jvir.2022.08.030.
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    • Seyferth, Elisabeth, Rui Dai, James Ronald, Jonathan G. Martin, Alan A. Sag, Nicholas Befera, Waleska M. Pabon-Ramos, Paul V. Suhocki, Tony P. Smith, and Charles Y. Kim. “Safety Profile of Particle Embolization for Treatment of Acute Lower Gastrointestinal Bleeding.” J Vasc Interv Radiol 33, no. 3 (March 2022): 286–94. https://doi.org/10.1016/j.jvir.2021.11.006.
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    • Kemp, Jennifer, Ryan Short, Sean Bryant, Linda Sample, and Nicholas Befera. “Patient-Friendly Radiology Reporting-Implementation and Outcomes.” J Am Coll Radiol 19, no. 2 Pt B (February 2022): 377–83. https://doi.org/10.1016/j.jacr.2021.10.008.
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    • Zanolli, Nicole C., Brendan C. Cline, Nicholas T. Befera, and Jonathan G. Martin. “Diagnostic accuracy of clinically reported adenomyosis on pelvic ultrasound and MRI compared to surgical pathology.” Clin Imaging 82 (February 2022): 117–20. https://doi.org/10.1016/j.clinimag.2021.11.012.
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    • 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 32, no. 9 (September 2021): 1310-1318.e2. 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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    • Angeli, Stelios, Nicholas Befera, Jean-Marc Peyrat, Evan Calabrese, George Allan Johnson, and Christakis Constantinides. “A high-resolution cardiovascular magnetic resonance diffusion tensor map from ex-vivo C57BL/6 murine hearts.” J Cardiovasc Magn Reson 16, no. 1 (October 16, 2014): 77. https://doi.org/10.1186/s12968-014-0077-x.
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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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    • 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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    • 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 (2014): 161–68. https://doi.org/10.1002/cmmi.1557.
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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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