Evidence map›Paper›PMID 34800225›Full record

ArticleInternational journal of computer assisted radiology and surgery2022

Research on registration and navigation technology of augmented reality for ex-vivo hepatectomy.

Fengfeng Zhang, Shi Zhang, Long Sun, Wei Zhan, Lining Sun

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Article in International journal of computer assisted radiology and surgery, 2022. 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.

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0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
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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

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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
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4 · The record

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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

5 authors.

Fengfeng ZhangSchool of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215006, China. zhangfengfeng@suda.edu.cn.ORCID http://orcid.org/0000-0001-5250-9421
Shi ZhangCollege of Mechanical and Engineering, Harbin Engineering University, Harbin, 150001, China.
Long SunCollege of Mechanical and Engineering, Harbin Engineering University, Harbin, 150001, China.
Wei ZhanThe First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
Lining SunSchool of Mechanical and Electrical Engineering, Soochow University, Suzhou, 215006, China.

Funding

National Key Research and Development Project 2018YFB1307700
6 · The paper itself

Abstract

purposeThe application of augmented reality technology to the partial hepatectomy procedure has high practical significance, but the existing augmented reality navigation system has major drawbacks in the display and registration methods, which result in low precision. The augmented reality surgical navigation system proposed in this study has been improved in the above two aspects, which can significantly improve the surgical accuracy.

methodsThe use of optical see-through head-mounted displays for imaging displays can prevent doctors from reconstructing the patient's two-dimensional image information in their minds and reduce the psychological burden of doctors. In the registration process, the biomechanical properties of the liver are introduced, and a non-rigid registration method based on biomechanics is proposed and realized by a meshless algorithm. In addition, this study uses the moving grid algorithm to carry out clinical experiments on ex-vivo pig liver for experimental verification.

resultsThe mark-based interactive registration error is 4.21 ± 1.6 mm, and the registration error is reduced after taking the biomechanical properties of the liver into account, which is - 0.153 ± 0.398 mm. The cutting error of the liver model is 0.159 ± 0.292 mm. In addition, with the aid of the navigation system proposed in this paper, the experiment of ex-vivo pig liver cutting was completed with an error of - 1.164 ± 0.576 mm.

conclusionsAs a proof-of-concept study, the augmented reality navigation system proposed in this study improves the traditional image-guided surgery in terms of display and registration methods, and the feasibility of the system is verified by ex-vivo pig liver experiments. Therefore, the navigation system has a certain guiding significance for clinical surgery.

Indexed as

Augmented RealitySurgery, Computer-AssistedAlgorithmsAnimalsHepatectomyImaging, Three-DimensionalSwineTechnologyAugmented realityBiomechanical propertyNon-rigid registrationOptical see-through head-mounted displaysPartial hepatectomy

Identifiers

PMID34800225

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