Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes

Abstract Functional ultrasound imaging (fUS) and ultrasound localization microscopy (ULM) are advanced ultrasound imaging modalities for assessing both functional and anatomical characteristics of the brain. However, the application of these techniques at a whole-brain scale has been limited by tech...

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Main Authors: Mathis Vert, Ge Zhang, Adrien Bertolo, Nathalie Ialy-Radio, Sophie Pezet, Bruno Osmanski, Thomas Deffieux, Mohamed Nouhoum, Mickael Tanter
Format: Article
Language:English
Published: Nature Portfolio 2025-04-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-96647-7
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author Mathis Vert
Ge Zhang
Adrien Bertolo
Nathalie Ialy-Radio
Sophie Pezet
Bruno Osmanski
Thomas Deffieux
Mohamed Nouhoum
Mickael Tanter
author_facet Mathis Vert
Ge Zhang
Adrien Bertolo
Nathalie Ialy-Radio
Sophie Pezet
Bruno Osmanski
Thomas Deffieux
Mohamed Nouhoum
Mickael Tanter
author_sort Mathis Vert
collection DOAJ
description Abstract Functional ultrasound imaging (fUS) and ultrasound localization microscopy (ULM) are advanced ultrasound imaging modalities for assessing both functional and anatomical characteristics of the brain. However, the application of these techniques at a whole-brain scale has been limited by technological challenges. While conventional linear acoustic probes provide a narrow 2D field of view and matrix probes lack sufficient sensitivity for 3D transcranial fUS, multi-array probes have been developed to combine high sensitivity to blood flow with fast 3D acquisitions. In this study, we present a novel approach for the combined implementation of transcranial whole-brain fUS and ULM in mice using a motorized multi-array probe. This technique provides high-resolution, non-invasive imaging of neurovascular dynamics across the entire brain. Our findings reveal a significant correlation between absolute cerebral blood volume (ΔCBV) increases and microbubble speed, indicating vessel-level dependency of the evoked response. However, the lack of correlation with relative CBV (rCBV) suggests that fUS cannot distinguish functional responses alterations across different arterial vascular compartments. This methodology holds promise for advancing our understanding of neurovascular coupling and could be applied in brain disease diagnostics and therapeutic monitoring.
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spelling doaj-art-4cc42e1114c44b2fbcb97e97a18c13aa2025-08-20T02:28:05ZengNature PortfolioScientific Reports2045-23222025-04-0115111010.1038/s41598-025-96647-7Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probesMathis Vert0Ge Zhang1Adrien Bertolo2Nathalie Ialy-Radio3Sophie Pezet4Bruno Osmanski5Thomas Deffieux6Mohamed Nouhoum7Mickael Tanter8Physics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSIconeusPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSIconeusPhysics for Medicine Paris, INSERM U1273, ESPCI Paris, PSL University, CNRSAbstract Functional ultrasound imaging (fUS) and ultrasound localization microscopy (ULM) are advanced ultrasound imaging modalities for assessing both functional and anatomical characteristics of the brain. However, the application of these techniques at a whole-brain scale has been limited by technological challenges. While conventional linear acoustic probes provide a narrow 2D field of view and matrix probes lack sufficient sensitivity for 3D transcranial fUS, multi-array probes have been developed to combine high sensitivity to blood flow with fast 3D acquisitions. In this study, we present a novel approach for the combined implementation of transcranial whole-brain fUS and ULM in mice using a motorized multi-array probe. This technique provides high-resolution, non-invasive imaging of neurovascular dynamics across the entire brain. Our findings reveal a significant correlation between absolute cerebral blood volume (ΔCBV) increases and microbubble speed, indicating vessel-level dependency of the evoked response. However, the lack of correlation with relative CBV (rCBV) suggests that fUS cannot distinguish functional responses alterations across different arterial vascular compartments. This methodology holds promise for advancing our understanding of neurovascular coupling and could be applied in brain disease diagnostics and therapeutic monitoring.https://doi.org/10.1038/s41598-025-96647-7Functional ultrasound imagingUltrasound localization microscopyMulti-array probeCerebral blood volumeBrain imaging
spellingShingle Mathis Vert
Ge Zhang
Adrien Bertolo
Nathalie Ialy-Radio
Sophie Pezet
Bruno Osmanski
Thomas Deffieux
Mohamed Nouhoum
Mickael Tanter
Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
Scientific Reports
Functional ultrasound imaging
Ultrasound localization microscopy
Multi-array probe
Cerebral blood volume
Brain imaging
title Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
title_full Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
title_fullStr Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
title_full_unstemmed Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
title_short Transcranial brain-wide functional ultrasound and ultrasound localization microscopy in mice using multi-array probes
title_sort transcranial brain wide functional ultrasound and ultrasound localization microscopy in mice using multi array probes
topic Functional ultrasound imaging
Ultrasound localization microscopy
Multi-array probe
Cerebral blood volume
Brain imaging
url https://doi.org/10.1038/s41598-025-96647-7
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