Evidence map›Paper›PMID 28936629›Full record

ArticleWorld journal of surgery2018

A Comparative Study of Generic Visual Components of Two-Dimensional Versus Three-Dimensional Laparoscopic Images.

Michael El Boghdady, Gobinath Ramakrishnan, Benjie Tang, Afshin Alijani

Abstract readComparative Study
In one paragraph

Article in World journal of surgery, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. 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

4 authors.

Michael El BoghdadyCuschieri Skills Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD19SY, UK. m.elboghdady@dundee.ac.uk.
Gobinath RamakrishnanCuschieri Skills Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD19SY, UK.
Benjie TangCuschieri Skills Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD19SY, UK.
Afshin AlijaniCuschieri Skills Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD19SY, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThere is a strong evidence to suggest that 3D imaging improves the laparoscopic task performance when compared against 2D. However, to date, no study has explained why that might be. We identified six generic visual components during laparoscopic imaging and aimed to study each component in both 2D and 3D environments for comparison.

methodsTwenty-four consented laparoscopic novices performed specific isolated tasks in a laparoscopic Endo Trainer in 2D and 3D separately. The six endpoints were the accuracy in detecting changes in the laparoscopic images in the following components: distance, area, angle, curvature, volume and spatial coordinates. All the components except the spatial coordinates were assessed by creation, measurement and comparison. Each component was analysed between 2D and 3D groups and within each group at different values. Tests of spatial coordinates were video-recorded and analysed for error number and error types by human reliability analysis technique. Errors types included past-pointing, not reaching the object and touching the wrong object. The results were statistically analysed with independent T test.

resultsThere was no statistically significant difference between 2D and 3D accuracy in the angle, area, distance and curvature. 3D performed more accurately in comparing volumes (p = 0.05). In spatial coordinates, there were a statistically significant higher number of errors in 2D as compared to 3D (p < 0.001). Past-pointing and touching the wrong objects were significantly higher in 2D (p < 0.05).

conclusionBetween all the visual components, detecting change in volume and the spatial coordinates showed significant improvement in 3D environment when compared to 2D.

Indexed as

Imaging, Three-DimensionalLaparoscopyTask Performance and AnalysisHumansRandom AllocationSpatial ProcessingVideo Recording

Identifiers

PMID28936629
PMCPMC5801375

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Registered trials

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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.