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Ali Zifan
Ali Zifan holds the position of Assistant Professor of Medicine IV in the Division of Gastroenterology at the University of California, San Diego (UCSD). Having obtained his PhD from City University London, United Kingdom, Zifan has been a resident of the United States since 2012.

Education
Zifan earned a BSc in Electrical Engineering in 2002, a MSc in Medical Engineering in  2006,  MPhil in Information Engineering in 2008 and a PhD in Information Engineering in 2011 at City, University of London. He subsequently carried out 2 post-doctoral fellowships in Bioinformatics, and Gastroenterology at UC San Diego.

Career
Dr. Zifan's main area of research centers around Esophageal Dysphagia and gastrointestinal motility, specifically examining gastroesophageal reflux and swallowing disorders. Alongside this, Dr. Zifan is also involved in research endeavors related to machine learning, pattern recognition, and computer vision, with a particular emphasis on their applications in gastrointestinal image and signal processing. He has authored numerous publications focused on gastrointestinal motility and esophageal diseases.

Select Publications
Omari, Taher I., et al. "Distension contraction plots of pharyngeal/esophageal peristalsis: next frontier in the assessment of esophageal motor function." American Journal of Physiology-Gastrointestinal and Liver Physiology 323.3 (2022): G145-G156.

Zifan, Ali, Vignesh Gandu, and Ravinder K. Mittal. "Esophageal wall compliance/stiffness during peristalsis in patients with functional dysphagia and high-amplitude esophageal contractions." American Journal of Physiology-Gastrointestinal and Liver Physiology 323.6 (2022): G586-G593.

Zifan, Ali, et al. "Bolus flow and biomechanical properties of the esophageal wall during primary esophageal peristalsis: effects of bolus viscosity and posture." Neurogastroenterology & Motility 34.6 (2022): e14281.

Muta, Kazumasa, Ravinder K. Mittal, and Ali Zifan. "Rhythmic contraction but arrhythmic distension of esophageal peristaltic reflex in patients with dysphagia." Plos one 17.1 (2022): e0262948.

Zifan, Ali, Kazumasa Muta, and Ravinder K. Mittal. "Distension‐contraction profile of peristalsis in patients with nutcracker esophagus." Neurogastroenterology & Motility 33.11 (2021): e14138.

Mittal, Ravinder K., Kazumasa Muta, Melissa Ledgerwood-Lee, and Ali Zifan. "Relationship between distension-contraction waveforms during esophageal peristalsis: effect of bolus volume, viscosity, and posture." American Journal of Physiology-Gastrointestinal and Liver Physiology 319, no. 4 (2020): G454-G461.