Evidence map›Paper›PMID 23781901›Full record

ArticleMicrocirculation (New York, N.Y. : 1994)2013

Quantitative mapping of hemodynamics in the lung, brain, and dorsal window chamber-grown tumors using a novel, automated algorithm.

Andrew N Fontanella, Thies Schroeder, Daryl W Hochman, Raymond E Chen, Gabi Hanna, Michael M Haglund, Narasimhan Rajaram, Amy E Frees, Timothy W Secomb, Gregory M Palmer and 1 more

Erratum issuedAbstract read
In one paragraph

Article in Microcirculation (New York, N.Y. : 1994), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
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

14 citing papers in PubMed.

  1. Article
  2. Hyperspectral wide-field-of-view imaging to study dynamic microcirculatory changes during hypoxia.American journal of physiology. Heart and circulatory physiology · 2022
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4 · The record

Corrections and comments

  • Erratum issued
    Rajaram, Narasimhan [added]; Frees, Amy E [added]
5 · Who and what money

Authors and funding

11 authors.

Andrew N FontanellaDepartment of Biomedical Engineering, Duke University, Durham, North Carolina, USA.
Thies Schroeder
Daryl W Hochman
Raymond E Chen
Gabi Hanna
Michael M Haglund
Narasimhan Rajaram
Amy E Frees
Timothy W Secomb
Gregory M Palmer
Mark W Dewhirst

Funding

Heat And Radiation Effects On Tumor MicrocirulationR01CA040355 · NCI · DUKE UNIVERSITY · PI DEWHIRST, MARK WESLEY · 1985 to 2013
$4.5M
Luminescent Oxygen Nanosensors for Tumor Hypoxia ImagingR01CA167250 · NCI · UNIVERSITY OF VIRGINIA · PI FRASER, CASSANDRA L · 2012 to 2016
$1.7M
NCI NIH HHS 1R01 CA167250 01NCI NIH HHS 5R01 CA040355 28NCI NIH HHS R01 CA040355NCI NIH HHS R01 CA167250
6 · The paper itself

Abstract

objectiveHemodynamic properties of vascular beds are of great interest in a variety of clinical and laboratory settings. However, there presently exists no automated, accurate, technically simple method for generating blood velocity maps of complex microvessel networks.

methodsHere, we present a novel algorithm that addresses the problem of acquiring quantitative maps by applying pixel-by-pixel cross-correlation to video data. Temporal signals at every spatial coordinate are compared with signals at neighboring points, generating a series of correlation maps from which speed and direction are calculated. User-assisted definition of vessel geometries is not required, and sequential data are analyzed automatically, without user bias.

resultsVelocity measurements were validated against the dual-slit method and against in vitro capillary flow with known velocities. The algorithm was tested in three different biological models in order to demonstrate its versatility.

conclusionsThe hemodynamic maps presented here demonstrate an accurate, quantitative method of analyzing dynamic vascular systems.

Indexed as

AlgorithmsModels, CardiovascularAnimalsBlood Flow VelocityBrainFemaleLungMammary Neoplasms, ExperimentalMiceMice, Nudeblood flowcomputationalimage processingtumor microcirculation

Identifiers

PMID23781901
PMCPMC3843942

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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.