Evidence map›Paper›PMID 33856643›Full record

ArticleInternational journal of computer assisted radiology and surgery2021

Effect of marker position and size on the registration accuracy of HoloLens in a non-clinical setting with implications for high-precision surgical tasks.

Laura Pérez-Pachón, Parivrudh Sharma, Helena Brech, Jenny Gregory, Terry Lowe, Matthieu Poyade, Flora Gröning

Abstract read
In one paragraph

Article in International journal of computer assisted radiology and surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Trial
  2. Article
  3. Markerless augmented reality registration for surgical guidance: a multi-anatomy clinical accuracy study.International journal of computer assisted radiology and surgery · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. An Augmented Reality System with Advanced User Interfaces for Image-Guided Intervention Applications.Proceedings of SPIE--the International Society for Optical Engineering · 2023
    Article
  9. Article
  10. Article
  11. Mixed reality guided root canal therapy.Healthcare technology letters
    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

7 authors.

Laura Pérez-PachónSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK. laura.perezpachon@gmail.com.ORCID http://orcid.org/0000-0002-8014-6565
Parivrudh SharmaSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.ORCID http://orcid.org/0000-0001-5244-8446
Helena BrechSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.ORCID http://orcid.org/0000-0002-6178-7543
Jenny GregorySchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.ORCID http://orcid.org/0000-0002-6328-4560
Terry LoweSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.ORCID http://orcid.org/0000-0002-1610-8652
Matthieu PoyadeSchool of Simulation and Visualisation, Glasgow School of Art, Glasgow, UK.ORCID http://orcid.org/0000-0002-7229-949X
Flora GröningSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.ORCID http://orcid.org/0000-0002-8127-4112

Funding

The Roland Sutton Academic Trust RSAT 0053/R/17
6 · The paper itself

Abstract

purposeEmerging holographic headsets can be used to register patient-specific virtual models obtained from medical scans with the patient's body. Maximising accuracy of the virtual models' inclination angle and position (ideally, ≤ 2° and ≤ 2 mm, respectively, as in currently approved navigation systems) is vital for this application to be useful. This study investigated the accuracy with which a holographic headset registers virtual models with real-world features based on the position and size of image markers.

methodsHoloLens

resultsSome image marker positions and the smallest image marker (4 × 4 cm) led to larger errors in the perceived dimensions of the virtual models than other image marker positions and larger markers (8 × 8 and 12 × 12 cm). ≤ 2° and ≤ 2 mm errors were found in 70.7% and 76% of cases, respectively.

conclusionErrors obtained in a non-negligible percentage of cases are not acceptable for certain surgical tasks (e.g. the identification of correct trajectories of surgical instruments). Achieving sufficient accuracy with image marker sizes that meet surgical needs and regardless of image marker position remains a challenge.

Indexed as

HumansImaging, Three-DimensionalReproducibility of ResultsSurgery, Computer-AssistedAugmented realityHolographic headsets’ registration errorImage-guided surgeryImage marker

Identifiers

PMID33856643
PMCPMC8166698

What OpenQuestion holds

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LicenceCC BY
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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.