Evidence map›Paper›PMID 33762307›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Artificial intelligence velocimetry and microaneurysm-on-a-chip for three-dimensional analysis of blood flow in physiology and disease.

Shengze Cai, He Li, Fuyin Zheng, Fang Kong, Ming Dao, George Em Karniadakis, Subra Suresh

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
12.0field-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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 118 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Learning in PINNs: Phase transition, diffusion equilibrium, and generalization.Neural networks : the official journal of the International Neural Network Society · 2026
    Article
  9. Review
  10. KKANs: Ku̇rková-Kolmogorov-Arnold networks and their learning dynamics.Neural networks : the official journal of the International Neural Network Society · 2025
    Article
  11. Article
  12. MR-AIV revealsbioRxiv : the preprint server for biology · 2025
    Article
  13. Review
  14. From PINNs to PIKANs: recent advances in physics-informed machine learning.Machine learning for computational science and engineering · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. InferringInterface focus · 2024
    Article
  19. Coagulo-Net: Enhancing the mathematical modeling of blood coagulation using physics-informed neural networks.Neural networks : the official journal of the International Neural Network Society · 2024
    Article
  20. Review
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

7 authors at 3 institutions in 2 countries.

Shengze CaiDivision of Applied Mathematics, Brown University, Providence, RI 02912.ORCID 0000-0003-0122-6864
He LiDivision of Applied Mathematics, Brown University, Providence, RI 02912.
Fuyin ZhengDepartment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139.ORCID 0000-0003-2113-8810
Fang KongSchool of Biological Sciences, Nanyang Technological University, 639798 Singapore.
Ming DaoDepartment of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139; SSuresh@ntu.edu.sg George_Karniadakis@brown.edu mingdao@mit.edu.ORCID 0000-0001-5372-385X
George Em KarniadakisDivision of Applied Mathematics, Brown University, Providence, RI 02912; SSuresh@ntu.edu.sg George_Karniadakis@brown.edu mingdao@mit.edu.ORCID 0000-0002-9713-7120
Subra SureshNanyang Technological University, 639798 Singapore SSuresh@ntu.edu.sg George_Karniadakis@brown.edu mingdao@mit.edu.ORCID 0000-0002-6223-6831
Brown University · USNanyang Technological University · SGMassachusetts Institute of Technology · US

Funding

Multifidelity and multiscale modeling of the spleen function in sickle cell disease with in vitro, ex vivo and in vivo validationsR01HL154150 · NHLBI · BROWN UNIVERSITY · PI Pierre BUFFET, Ming Dao · 2020 to 2026
$3.9M
NHLBI NIH HHS R01 HL154150
6 · The paper itself

Abstract

Understanding the mechanics of blood flow is necessary for developing insights into mechanisms of physiology and vascular diseases in microcirculation. Given the limitations of technologies available for assessing in vivo flow fields, in vitro methods based on traditional microfluidic platforms have been developed to mimic physiological conditions. However, existing methods lack the capability to provide accurate assessment of these flow fields, particularly in vessels with complex geometries. Conventional approaches to quantify flow fields rely either on analyzing only visual images or on enforcing underlying physics without considering visualization data, which could compromise accuracy of predictions. Here, we present artificial-intelligence velocimetry (AIV) to quantify velocity and stress fields of blood flow by integrating the imaging data with underlying physics using physics-informed neural networks. We demonstrate the capability of AIV by quantifying hemodynamics in microchannels designed to mimic saccular-shaped microaneurysms (microaneurysm-on-a-chip, or MAOAC), which signify common manifestations of diabetic retinopathy, a leading cause of vision loss from blood-vessel damage in the retina in diabetic patients. We show that AIV can, without any a priori knowledge of the inlet and outlet boundary conditions, infer the two-dimensional (2D) flow fields from a sequence of 2D images of blood flow in MAOAC, but also can infer three-dimensional (3D) flow fields using only 2D images, thanks to the encoded physics laws. AIV provides a unique paradigm that seamlessly integrates images, experimental data, and underlying physics using neural networks to automatically analyze experimental data and infer key hemodynamic indicators that assess vascular injury.

Indexed as

Artificial IntelligenceBlood Flow VelocityLab-On-A-Chip DevicesComputer SimulationDiabetic RetinopathyHemodynamicsHumansImaging, Three-DimensionalMicroaneurysmMicrofluidic Analytical TechniquesRegional Blood FlowRetinal VesselsRheologyblood flow in microaneurysmdeep learningdiabetic retinopathyimage analysisthree-dimensional flow fields

Identifiers

PMID33762307
PMCPMC8020788
OpenAlexW3139279894

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.