Olivier did his medical training and undertook specialist training in paediatrics and paediatric cardiology in Paris, France. He graduated from medical school at the Paris Descartes University in 2014. Afterwards, he became Assistant Professor in Pediatric Cardiology at Necker Hospital Enfants Malades (Paris) for two years.

In addition to his medical training, he studied cardiovascular physiology (M.Sc., Paris Descartes University, 2014) and acoustic physics. Between 2014 and 2017, he worked at the Langevin Institute (Paris), a laboratory specialized in acoustic physics.  This resulted in a PhD thesis on the new applications of ultrasound in cardiology in 2017. He worked full-time again in this laboratory, between November 2018 and July 2019, as a collaborator. In July 2019, he was appointed as a Clinician Investigator and Staff Cardiologist at SickKids.

Jerome Baranger's portrait


Jérôme completed is engineering training in Paris, France. He graduated in 2015 from the Ecole Centrale Paris, with a specialty in applied physics. He also holds a master of science in Biophysics, oriented in Biological Systems & Physical Concepts from Sorbonne University, Paris.

He has been involved in the field of medical ultrasound since 2013. He conducted several internships at the Langevin Institute as a research trainee. He also worked as a research and development trainee for Supersonic Imagine, an ultrasound company. From 2016 to 2019, he undertook a PhD at the Physics for Medicine lab in Paris, focusing on the application of ultrafast ultrasound to the study of transient vascular and neuronal phenomena.

He is in charge of the technical development of the Villemain Lab.



Jaclyn joined the SickKids team in February 2020. She holds a Bachelor of Commerce degree from Ryerson University with a Major in Global Management. Her studies focused on identifying and critically analyzing the economic, technological, political and social impacts globalization has on different parts of the world. During her time at Ryerson, Jaclyn founded “Healing in Harmony” a SickKids fundraiser in support of the Hospital’s Child Life Department. Jaclyn advocates for the integration of music, art and creative expression in every child’s care.

Jaclyn is also proud to be a SickKids Activator – recognized by the SickKids Foundation as a young professional who has created and managed a fundraising event in her community.

Fellows & Students


Julien graduated from the University of Lausanne, Switzerland in 2011 with a degree in medicine. He trained as a radiologist at the University hospitals of Lausanne and Bern upon which he obtained his title as a specialist in radiology in 2018. He completed his doctoral thesis on dose reduction in computed tomography of the shoulder joint at the University of Lausanne in 2019. Desiring to pursue his career in pediatrics, he subspecialized in pediatric radiology at the University Children’s Hospital of Zürich from 2017 to 2019 before joining SickKids to continue his training in general pediatric radiology and cardiac diagnostic imaging with interests in fetal cardiac MRI.

He will lead a project on brain perfusion imaging using ultrafast ultrasound and MRI.



Minh graduated with a degree in medicine from the Albert Einstein College of Medicine in 2014.  He completed his general pediatrics training at the Children’s Hospital at Montefiore in 2017 and recently completed his pediatric cardiology training at Children’s Hospital Los Angeles in 2019.

He is interested in improving our understanding of diastolic function, and has continued his training at SickKids as a clinical research fellow. He will lead a project on coronary ultrafast doppler angiography



Naiyuan is a PhD student who likes knowledge integration and innovation. He holds a master of applied science in Electrical & Computer Engineering. He also holds a bachelor’s degree in Optoelectronic Information Science and Engineering.

He will continue his research in the field of ultrasound imaging and medical image processing in the Villemain Lab.



Aimen Malik is a 4th year undergraduate student at University of Toronto Mississauga. Aimen is majoring in Biology of Health Sciences, with a specialization in Biomedical Physics. She has worked on G protein coupled receptors, in particular Muscarinic type 2 in the Gradinaru lab at UTM. As a transfer student from a medical school in Pakistan, Aimen has gained hands on experience working with patients with congenital cardiac anomalies. This leads to her interest in learning about using ultrasound imaging techniques to distinguish pathology in pediatric hearts.

Mark Friedberg's portrait

Mark Friedberg

Collaborator - Expert in cardiac explorations, right ventricle assessment, and pre-clinical models
Luc Mertens' portrait

Luc Mertens

Collaborator - Expert in clinical translation of new ultrasound technology
Mathieu Pernot's portrait

Mathieu Pernot

International Collaborator

Mathieu is the Deputy Director of Physics for Medicine lab (Inserm U1273) in Paris, France. He works with the Villemain Lab as a direct contact for collaboration between Physics for Medicine Paris and SickKids Research Institute.

Learn more about Physics for Medicine Paris.