About

I am a postdoctoral researcher at EPFL, working on wavefront shaping for ultrasound imaging and micromanipulation in scattering media.

My research lies at the intersection of acoustics, wave physics, signal processing, and biomedical ultrasound. I am interested in using waves both to image and control complex systems.

During my PhD at the Physics for Medicine laboratory in ESPCI Paris - PSL, advised by Dr. Mathieu Pernot and Dr. Guillaume Goudot, I developed volumetric Doppler imaging, contrast-enhanced ultrasound and ultrasound localization microscopy methods for vascular imaging.

Since July 2026, my work with Prof. Romain Fleury at the Laboratory of Wave Engineering (LWE) at EPFL has focused on recovering precise acoustic control and images through scattering environments.

Research interests

  • Wavefront shaping. Controlling acoustic propagation through strongly scattering media by measuring and shaping complex wavefronts.
  • Ultrasonic micromanipulation. Designing focused acoustic fields for precise, contactless manipulation of microscopic objects in complex environments.
  • Volumetric ultrasound imaging. Developing fast and flexible 3D and 3D+time ultrasound methods with row-column arrays and other wide-field probes.
  • Doppler imaging. Creating novel Doppler estimation algorithms or clutter filtering techniques
  • Super-resolution ultrasound. Developing and applying ultrasound localization microscopy (ULM), null subtraction imaging (NSI),...

Selected publications

Full list
  1. 2026 · arXiv preprint · arXiv:2608.18252

    Angle-domain null subtraction imaging from beamformed plane-wave data

    H. Leroy

  2. 2026 · Ultrasonics · 166, 108126

    Revisiting XDoppler estimator for high spatiotemporal resolution volumetric axial velocity measurement using row-column arrays

    H. Leroy, A. Bertolo, T. Deffieux, G. Goudot, M. Tanter & M. Pernot

  3. 2025 · EBioMedicine · 111, 105528

    Assessment of microvascular flow in human atherosclerotic carotid plaques using ultrasound localization microscopy

    H. Leroy, L. Wang, A. Jimenez, ... & M. Pernot

  4. 2026 · Physics in Medicine & Biology · 71(3), 035013

    Exploiting harmonic signature of gas vesicles in amplitude-modulated singular value decomposition for ultrafast ultrasound molecular imaging

    G. Zhang, H. Leroy, ..., M. Shapiro, M. Pernot & M. Tanter

  5. 2027 · Ultrasonics · 169, 108296

    Multi-stage singular value decomposition for ultrafast ultrasound imaging of microbubbles

    G. Zhang, H. Leroy, ... & M. Tanter

  6. 2026 · Ultrasound in Medicine & Biology · 52(6), 1191–1195

    4D wide-field ultrafast ultrasound of the human carotid using a multi-lens probe

    H. Plath, N. Haidour, L. Bolliet, A. Houdouin, H. Leroy, ... & C. Papadacci

Curriculum vitae

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Experience

2026 — present

Postdoctoral researcher

EPFL · Lausanne, Switzerland

Wavefront shaping for ultrasound micromanipulation in scattering media, with Prof. Romain Fleury.

2026

Postdoctoral researcher

ESPCI Paris — PSL · Paris, France

Volumetric vascular ultrasound: Doppler, super-resolution, and contrast imaging.

2022

R&D intern

CSEM · Switzerland

Microfluidic sorting and robotic sample handling for organoids.

2021

Graduate research assistant

Imperial College London

CFD modelling of arterial wall shear stress and LDL transport.

2020

R&D intern

DNA Script · Paris

Hardware and software automation for a DNA printer prototype.

Education

2022 — 2025

PhD in Acoustics

ESPCI Paris — PSL

Towards clinical volumetric Doppler and super-resolution vascular ultrasound imaging.

2021 — 2022

MSc · Diplôme d’ingénieur

Mines Paris — PSL

Major in biotechnology.

2018 — 2021

MSc · Cycle ingénieur polytechnicien

École polytechnique

Major in biophysics and biomechanics.

Awards and grants

2026

Poster award · European Molecular Imaging Meeting

2025

Best oral presentation · SMAER PhD Day

2025

Student travel grant · IEEE International Ultrasonics Symposium

2022

Allocation Moniteur Polytechnicien · Full PhD funding

Teaching

2022-2024
Université Paris Cité

Experimental physics for first- and third-year bachelor students

2019-2020
Lycée Sainte Geneviève

Oral examination in physics for first-year students

Mentoring

2025

Benjamin Le Fustec (Graduate student - Mines Paris)

2024

Yinshuang Zhou (Graduate student - PSL University)

Other

2021 — present
Protection Civile Paris Seine

Volunteer first-aid team leader and instructor

Contact

You can reach me at henri[dot]leroy[at]epfl[dot]ch.