Skip to main content

Trinity College Dublin, The University of Dublin

Menu Search

Trinity College Dublin By using this website you consent to the use of cookies in accordance with the Trinity cookie policy. For more information on cookies see our cookie policy.

Profile Photo

Professor Barry Mc Mahon

Chief Physicist/Clinical Associate Profe (Clinical Medicine)


Dr. McMahon has a national and international reputation as an Academic Medical Physicist in the fields of novel physiological measurement and medical device innovation and design. He has won a number of prestigious awards for his research and has successfully fostered a number of commercial offshoot companies. He has published a substantial body of work in several high impact journals related to his field of interest. He has secured significant funding from industry and grants to support his work and has funded several PhD and MSc projects both at TCD and ITT Tallaght. Dr. McMahon has established many links in Ireland and internationally and is central to several multidisciplinary projects, in particular he has demonstrated an ability to support translational research programmes. Currently he is Chief Physicist/Clinical Engineer at Tallaght Hospital and a Senior Clinical Lecturer in Medical Physics and Bioengineering in the School of Medicine, Trinity College, Dublin. He is Vice-President and Governor of the Irish College of Medical Physicists. He is a co-founder of TAGG and is driving the development of a strategic medical device innovation centre within the group.
  Bioengineering   Biological Engineering   Biomaterials   Biomechanics, Biomedical Engineering   Biomedical Engineering   Biomedical Research Resources, Other   Biomedical Research Training   Biosensors   Diagnostics   Digestive Diseases & Disorders   Education/Instruction (Health/Safety/Medical)   Gastroenterology   Gastrointestinal Diseases/Disorders   Health Physics   Health/Medical Science--Computer Technology   Instruments/Instrumentation/Devices (Health/M   Medical Devices   Medical Diagnosis   Medical Instrumentation   Medical/Diagnostic Imaging   Physiological Controls and Systems   Technology Assessment/Transfer/Outreach (Hlth   Ultrasound
Details Date
Vice-President & Governor, Irish College of Medical Physicists November 2009
Details Date From Date To
Institute of Physicists & Engineers in Medicine (U.K.) 1993 Present
Association of Physical Scientisits in Medicine (APSM) 1995 Present
Irish Society of Gastroenterology (ISG) 2001 Present
American Gastroenterology Association (AGA) Mar 2006 Present
Biomedical Engineering Association of Ireland (BEAI) 1995 Present
Alqudah, M.M., Drewes, A.M., McMahon, B.P., Measuring recto-anal Inhibitory reflex using functional lumen imaging probe: A pilot study, 2018-March, 2018, pp225-230 , Conference Paper, PUBLISHED  DOI
Liao D, Lottrup C, Fynne L, McMahon BP, Krogh K, Drewes AM, Zhao J, Gregersen H, Axial Movements and Length Changes of the Human Lower Esophageal Sphincter During Respiration and Distension-induced Secondary Peristalsis Using Functional Luminal Imaging Probe., Journal of neurogastroenterology and motility, 2018, Journal Article, PUBLISHED
Arroyo Vázquez JA, Bergström M, Bligh S, McMahon BP, Park PO, Exploring pyloric dynamics in stenting using a distensibility technique., Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society, 30, (12), 2018, Journal Article, PUBLISHED  DOI
Zhao J, McMahon B, Fox M, Gregersen H, The esophagiome: integrated anatomical, mechanical, and physiological analysis of the esophago-gastric segment., Annals of the New York Academy of Sciences, 1434, (1), 2018, p5 - 20, Review Article, PUBLISHED  DOI
Hoff DAL, McMahon B, Gregersen H, Esophageal multimodal stimulation and sensation., Annals of the New York Academy of Sciences, 1434, (1), 2018, p210 - 218, Review Article, PUBLISHED  DOI
Lower Esophageal Sphincter Efficacy Following Laparoscopic Antireflux Surgery with Hiatal Repair: Role of Fluoroscopy, High-Resolution Impedance Manometry and FLIP in Detecting Recurrence of GERD and Hiatal Hernia in, editor(s)Memon, M.A. , Hiatal Hernia Surgery, Switzerland, Springer Nature , 2017, pp153 - 168, [Wong, V. McMahon, B.P. Gregersen, h.], Book Chapter, PUBLISHED  URL
Abdelrahman M, Davis NF, McMahon BP, Walsh M, McDermott TED, Thornhill JA, Manecksha RP., A comparative assessment of irrigation and drainage characteristics for commercially available urethral catheters., Central European journal of urology, 70, (4), 2017, p382-387 , Journal Article, PUBLISHED  DOI
Brock C., McCallum R., Gyawali C., Farmer A., Farmer A., Farmer A., Frøkjær J., McMahon B., Drewes A., Neurophysiology and new techniques to assess esophageal sensory function: an update, Annals of the New York Academy of Sciences, 1380, (1), 2016, p78-90 , Review Article, PUBLISHED  DOI
Christian Lottrup, Barry P. McMahon, Per Ejstrud, Marcin Andrzej Ostapiuk, Peter Funch-Jensen & Asbjørn Mohr Drewes, Esophago-gastric Junction Distensibility in Hiatus Hernia, Diseases of the Esophagus, Early View, 2015, p1 - 5, Journal Article, PUBLISHED
Regan J, Walshe M, Timon C, McMahon B, Endoflip: Evaluation of pharyngo-oesophageal segment tone and swallowing in a clinical population: A total laryngectomy series. , Clinical Otolaryngology, 40, (2), 2015, p121 - 129, Journal Article, PUBLISHED  DOI

Page 1 of 6
Vegesna, A. Chen, D. R. McMahon, B. P. Benias, P. C. Pillai, A. Miller, L. S., DISTENSIBILITY OF THE GASTROESOPHAGEAL JUNCTION HIGH-PRESSURE ZONE IN NON-GERD SUBJECTS PRE AND POST ATROPINE AND IN PATIENTS WITH GERD, Gastroenterology, Digestive Disease Week, June 2018, 154, (6), 2018, ppS488 - S488, Published Abstract, PUBLISHED
Vegesna, A. Chen, D. R. McMahon, B. P. Benias, P. C. Pillai, A. Roland, B. C. Miller, L. S., FLIP 4D COLOR CONTOUR PLOTS TO IDENTIFY REGIONAL DISTENSIBILITY OF THE GASTROESOPHAGEAL JUNCTION HIGH-PRESSURE ZONE, Gastroenterology, Digestive Disease Week, Washington DC, June 2018, 154, (6), 2018, ppS962 - S963, Published Abstract, PUBLISHED
Barry McMahon, Driving Change in Clinical PracticeThrough Innovation, 35th Anniversary Distinguished Lecture Series, School of Medicine Chinese University of Hong Kong, 13th December, 2016, Chinese University of Hong Kong, Invited Talk, PUBLISHED
McMahon, B. P. , Use of FLIP in Transoral Intragastric Surgery, The European School of Laparoscopic Surgery - 2nd Transoral Intragastric Surgery Workshop, Saint Pierre University Hospital , Brussels. , 2008, Invited Talk, PRESENTED
Gregersen, H. and B. P. McMahon , Visualising the GI Tract; New Perspectives on Imaging , Association of Physical Scientists in medicing (APSM) Annual Scientific Meeting , Dublin , 2007, Invited Talk, PUBLISHED
McMahon, B. P. , GERD and FLIP Technology , European Society of Esophagology, Dublin , 2007, Invited Talk, PUBLISHED
McMahon, B. P., J. Browne, et al, Writing Scientific Papers, Association of Physical Scientists in Medicine (APSM) Annual Scientific Meeting, Dublin , 2007, Invited Talk, PUBLISHED
McMahon, B. P. , Use of FLIP in Transoral Intragastric Surgery , The European School of Lapraoscopic Surgery - 2nd Transoral Intragastric Surgery Workshop, Saint Peierre University Hospital, Brussels. , 2007, Invited Talk, PUBLISHED
McMahon, B. P. and H. Gregersen , Do we really understand the function of the Oesophagogastric Junction (OGJ) in Disease? , 3rd Gastro Intestinal Physiology Measurement Meeting, York, England , 2007, Invited Talk, PUBLISHED
McMahon, B. P. , Joint Lecture with the Biomedical Engineering Division "A New Assessment Method for Gastroesophageal Reflux Disease"£ , Engineers Ireland - West Region , Galway, 2007, Invited Talk, PUBLISHED


Page 1 of 5
Award Date
Distinguished Scholar - Chinese University of Hong Kong 13th December 2016
Physiological Measurement, GI Biomechanics & Motility, Non-ionising Diagnositic Imaging in Medicine, Process Improvement, Endoscopic Instrumentation and Techniques