Evidence map›Paper›PMID 32038856›Full record

ArticleHealthcare technology letters2019

Determining blood flow direction from short neurovascular surgical microscope videos.

Reid Vassallo, Adam Rankin, Stephen P Lownie, Hitoshi Fukuda, Hidetoshi Kasuya, Benjamin W Y Lo, Terry Peters, Yiming Xiao

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Healthcare technology letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.2field-weighted citation impact, top 43% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Article
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

8 authors at 4 institutions in 3 countries.

Reid VassalloRobarts Research Institute, Western University, London, Canada.
Adam RankinRobarts Research Institute, Western University, London, Canada.ORCID 0000-0002-7247-6249
Stephen P LownieDepartment of Clinical Neurological Sciences, Western University, London, Canada.
Hitoshi FukudaDepartment of Neurosurgery, Kochi University Hospital, Kochi, Japan.
Hidetoshi KasuyaDepartment of Neurosurgery, Tokyo Women's Medical University Medical Center East, Tokyo, Japan.
Benjamin W Y LoDepartment of Neurosurgery and Neurointensive Care, Lenox Hill Hospital, New York City, USA.
Terry PetersRobarts Research Institute, Western University, London, Canada.
Yiming XiaoRobarts Research Institute, Western University, London, Canada.
Western University · CALenox Hill Hospital · USTokyo Women's Medical University Adachi Medical Center · JPUniversity of Kochi · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neurovascular surgery aims to repair diseased or damaged blood vessels in the brain or spine. There are numerous procedures that fall under this category, and in all of them, the direction of blood flow through these vessels is crucial information. Current methods to determine this information intraoperatively include static pre-operative images combined with augmented reality, Doppler ultrasound, and injectable fluorescent dyes. Each of these systems has inherent limitations. This study includes the proposal and preliminary validation of a technique to identify the direction of blood flow through vessels using only video segments of a few seconds acquired from routinely used surgical microscopes. The video is enhanced to reveal subtle colour fluctuations related to blood pulsation, and these rhythmic signals are further analysed in Fourier space to reveal the direction of blood flow. The proposed method was validated using a novel physical phantom and retrospective analysis of surgical videos and demonstrated high accuracy in identifying the direction of blood flow.

Indexed as

augmented realitybiomechanicsbiomedical optical imagingbiomedical ultrasonicsbloodblood flow directionblood pulsationblood vesselsbonebraindamaged blood vesselsdiseasesFourier spacehaemodynamicsimage segmentationmedical image processingneurophysiologyneurovascular surgeryphantomsphysical phantomroutinely used surgical microscopesshort neurovascular surgical microscope videosstatic pre-operative imagessubtle colour fluctuationssurgerysurgical videosvideo segments

Identifiers

PMID32038856
PMCPMC6952245
OpenAlexW2980119938

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.