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W. Apoutou N’DJIN received the M. Eng. degree in Instrumentation from the National Graduate School of Engineering & Research Center of Caen (Ensicaen) in 2004, the M.S. degree in image & signal processing from the Centrale Graduate School of Lyon, France, in 2005, and the Ph.D. degree in biomedical engineering from the University of Lyon, Claude Bernard Lyon I, in 2008. He worked from 2005 at the French National Institute of Health and Medical Research, INSERM U556, Lyon, on the development of USgHIFU for intraoperative thermal ablations of liver metastases. From 2009, he joined for 3 years the Sunnybrook Research Institute (SRI), Imaging Research, Toronto, Canada, as a post-doctoral research fellow to study conformal MRgHICU therapies for endocavitary/interstitial thermal ablations of localized tumors in prostate and brain. Since 2012, he works as a Research Associate at LabTAU, INSERM U1032, Lyon. His research interests include image-guided HIFU for focal/conformal ablative therapies (localized cancers; dysfunctional tissues), novel ultrasound technologies (CMUTs), mechanisms and applications of ultrasound neurostimulation. Dr. N’Djin is involved in translational research from numerical modeling to experimental development of therapeutic and image-guidance strategies. In 2019, he received the Frederic LIZZI Early Career Award of the International Society of Therapeutic Ultrasound (ISTU) at the 19th International Symposium for Therapeutic Ultrasound (ISTU 2019, Barcelona, Spain), for his contributions in therapeutic ultrasound.

  • 2019: Frederic LIZZI Early Career Award of the International Society of Therapeutic Ultrasound (ISTU) at the 19th International Symposium for Therapeutic Ultrasound (ISTU 2019, Barcelona, Spain), for his contributions in therapeutic ultrasound (;
  • 2017 : Best Paper Award at the 16th International Workshop on Micromachined Ultrasonic Transducers (MUT 2017, Glasgow, United Kingdom) for their work on the in vivo feasibility of high intensity ultrasound generation with CMUTs for interstitial MR-guided brain ablation in the porcine model
  • 2015 – 2016 : Scholarship from the Mitacs Globalink Research Award – Campus France: 9 675$. Scientific exchange for the PhD student Mr. Jérémy VION with the Department of Physics, Ryerson University of Toronto, Canada (Supervion: Drs. W. Apoutou N’DJIN and Jahan TAVAKKOLI).
  • 2015 – 2016 : Post-doctoral Scholarship from the Whitaker international award: 101 000$. Funding of the post-doctoral fellowship of Dr. Christopher BAWIEC (Supervisor: Dr. W. A. N’DJIN). LabTAU (INSERM U556), University Claude Bernard of Lyon, France)
  • 2006 : Co-laureate of the Antonin Poncet Prize (5000€) for their work on HIFU liver treatments in the porcine model under intra-operative approach for the treatment of liver metastases of colorectal cancers (LMCC). Vascular and biliary tolerance.
  • 2005 – 2008 : Doctoral scholarship from the French Ministry of Education: 60 000€. Funding of the PhD student Mr. W. Apoutou N’DJIN. LabTAU (INSERM U556), University Claude Bernard of Lyon, France

Selected publications :

  • Vion-Bailly J, Suarez-Castellanos IM, Chapelon JY, Carpentier A, N’Djin WA. Neurostimulation success rate of repetitive pulse focused ultrasound in an in vivo giant axon model: An acoustic parametric study. Medical Physics. 2022, 49(1), 682-701.
  • Suarez-Castellanos IM, Dossi E, Vion-Bailly J, Salette L, Chapelon JY, Carpentier A, Huberfeld G, N'Djin WA. Spatiotemporal characterization of causal electrophysiological activity stimulated by single pulse Focused Ultrasound: an ex vivo study on hippocampal brain slices. Journal of Neural Engineering. 2021. 18(2), 026022.
  • Daunizeau L, Nguyen A, Le Garrec M, Chapelon JY, N'Djin WA. Robot-assisted ultrasound navigation platform for 3D HIFU treatment planning: Initial evaluation for conformal interstitial ablation. Computers Biol Med. 2020, 124, 103941.
  • Vion-Bailly J, N’Djin WA, Mauricio Suarez Castellanos I, Mestas JL, Carpentier A & Chapelon JY. A causal study of the phenomenon of ultrasound neurostimulation applied to an in vivo invertebrate nervous model. Scientific Reports 2019; 9: 13738.
  • Petrusca L, Varray F, Souchon R, Bernard A, Chapelon JY, Liebgott H, N'Djin WA, Viallon M. Fast Volumetric Ultrasound B-Mode and Doppler Imaging with a New High-Channels Density Platform for Advanced 4D Cardiac Imaging/Therapy. Appl Sci 2018; 8(2) :200.
  • N’Djin WA, Gerold B, Vion J, Canney M, Sénégond N, Roy M, Carpentier A, Chapelon JY. Capacitive Micro-machined Ultrasound Transducers for Interstitial High Intensity Ultrasound Therapies. IEEE Trans Ultrason Ferroelectr Freq Control 2017; 64(8): 1245-1260.
  • N'Djin WA, Burtnyk M, Lipsman N, Bronskill M, Kucharczyk W, Schwartz M, Chopra R. Active MR-temperature feedback control of dynamic interstitial ultrasound therapy in brain: in vivo experiments and modeling in native and coagulated tissues. Medical Physics 2014; 41(9): 093301.
  • Chopra R, Colquhoun A, Burtnyk M, N’Djin WA, Kobelevskiy I, Boyes A, Siddiqui K, Foster H,  Sugar  L,  Haider  M,  Bronskill  M, Klotz  L.  MR imaging-controlled  transurethral  ultrasound therapy for conformal treatment of prostate tissue:  Initial feasibility in humans.  Radiology 2012; 265(1):303-313.
  • Melodelima D, N’Djin WA, Parmentier H, Chesnais S, Rivoire M, Chapelon JY. Thermal ablation by high-intensity-focused ultrasound using a toroid transducer increases the coagulated volume. Results of Animal Experiments. Ultrasound in Medicine and Biology 2009; 35(3):425-435.
  • Parmentier H, Melodelima D, N’Djin WA, Chesnais S, Chapelon JY, Rivoire M. High Intensity Focused Ultrasound ablation for the treatment of colorectal liver metastases during an open procedure. Study on the pig. Annals of Surgery 2009; 249(1):129-136.