Evidence map›Paper›PMID 35544570›Full record

ArticleScience advances2022

Real-time 3D optoacoustic tracking of cell-sized magnetic microrobots circulating in the mouse brain vasculature.

Paul Wrede, Oleksiy Degtyaruk, Sandeep Kumar Kalva, Xosé Luis Deán-Ben, Ugur Bozuyuk, Amirreza Aghakhani, Birgul Akolpoglu, Metin Sitti, Daniel Razansky

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
16.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 125 citations in OpenAlex.

  1. Two-Photon Endomicroscopy for Image-Guided Magnetic Micro-Agents.Small (Weinheim an der Bergstrasse, Germany) · 2026
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  13. CAMP: Closed-Loop Acoustic-Magnetic Propulsion of Microrobots for Precision Cell Manipulation.Advanced intelligent systems (Weinheim an der Bergstrasse, Germany) · 2025
    Article
  14. Article
  15. Article
  16. Review
  17. Micro/Nanorobots for Combating Brain Disorders: Challenges, Advances, and Perspectives.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  18. Review
  19. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 3 countries.

Paul WredeInstitute of Pharmacology and Toxicology and Institute for Biomedical Engineering, Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland.ORCID 0000-0002-0702-6428
Oleksiy DegtyarukInstitute of Pharmacology and Toxicology and Institute for Biomedical Engineering, Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland.
Sandeep Kumar KalvaInstitute of Pharmacology and Toxicology and Institute for Biomedical Engineering, Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland.ORCID 0000-0003-1034-7246
Xosé Luis Deán-BenInstitute of Pharmacology and Toxicology and Institute for Biomedical Engineering, Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland.
Ugur BozuyukPhysical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.ORCID 0000-0001-9555-2307
Amirreza AghakhaniPhysical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.ORCID 0000-0002-4301-4053
Birgul AkolpogluPhysical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany.ORCID 0000-0002-2410-0351
Metin SittiInstitute for Biomedical Engineering, Department of Information Technology and Electrical Engineering, ETH Zurich, 8093 Zurich, Switzerland.ORCID 0000-0001-8249-3854
Daniel RazanskyInstitute of Pharmacology and Toxicology and Institute for Biomedical Engineering, Faculty of Medicine, University of Zurich, 8057 Zurich, Switzerland.ORCID 0000-0001-8676-0964
University of Zurich · CHMax Planck Institute for Intelligent Systems · DEKoç University · TR

Funding

Bidirectional optical-acoustic mesoscopic neural interface for image-guided neuromodulation in behaving animalsUF1NS107680 · NINDS · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI RAZANSKY, DANIEL, RINBERG, DMITRY · 2018 to 2020
$3.4M
European Research Council 834531NINDS NIH HHS UF1 NS107680
6 · The paper itself

Abstract

Mobile microrobots hold remarkable potential to revolutionize health care by enabling unprecedented active medical interventions and theranostics, such as active cargo delivery and microsurgical manipulations in hard-to-reach body sites. High-resolution imaging and control of cell-sized microrobots in the in vivo vascular system remains an unsolved challenge toward their clinical use. To overcome this limitation, we propose noninvasive real-time detection and tracking of circulating microrobots using optoacoustic imaging. We devised cell-sized nickel-based spherical Janus magnetic microrobots whose near-infrared optoacoustic signature is enhanced via gold conjugation. The 5-, 10-, and 20-μm-diameter microrobots are detected volumetrically both in bloodless ex vivo tissues and under real-life conditions with a strongly light-absorbing blood background. We further demonstrate real-time three-dimensional tracking and magnetic manipulation of the microrobots circulating in murine cerebral vasculature, thus paving the way toward effective and safe operation of cell-sized microrobots in challenging and clinically relevant intravascular environments.

Indexed as

RoboticsAnimalsBrainGoldMagnetic PhenomenaMagneticsMiceGold

Identifiers

PMID35544570
PMCPMC9094653
OpenAlexW4280508677

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.