Evidence map›Paper›PMID 32808429›Full record

ArticleThe international journal of medical robotics + computer assisted surgery : MRCAS2020

Comparing the accuracy of the da Vinci Xi and da Vinci Si for image guidance and automation.

James M Ferguson, Bryn Pitt, Alan Kuntz, Josephine Granna, Nicholas L Kavoussi, Naren Nimmagadda, Eric J Barth, Stanley Duke Herrell, Robert J Webster

Abstract read
In one paragraph

Article in The international journal of medical robotics + computer assisted surgery : MRCAS, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Evolution of Robotic-Assisted Hepatobiliary Surgery.Bioengineering (Basel, Switzerland) · 2025
    Review
  5. A Safe Framework for Quantitative In Vivo Human Evaluation of Image Guidance.IEEE open journal of engineering in medicine and biology · 2024
    Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Review
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

9 authors.

James M FergusonDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA.ORCID https://orcid.org/0000-0002-8436-2804
Bryn PittDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA.ORCID https://orcid.org/0000-0003-1839-6616
Alan KuntzRobotics Center and School of Computing, University of Utah, Salt Lake City, Utah, USA.ORCID https://orcid.org/0000-0003-0017-3932
Josephine GrannaDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA.
Nicholas L KavoussiVanderbilt Institute for Surgery and Engineering (VISE), Nashville, Tennessee, USA.
Naren NimmagaddaVanderbilt Institute for Surgery and Engineering (VISE), Nashville, Tennessee, USA.
Eric J BarthDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA.
Stanley Duke HerrellVanderbilt Institute for Surgery and Engineering (VISE), Nashville, Tennessee, USA.
Robert J WebsterDepartment of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA.

Funding

Image Guided Robotic Nephron-Sparing SurgeryR01EB023717 · NIBIB · VANDERBILT UNIVERSITY · PI HERRELL, S DUKE, MIGA, MICHAEL IAN · 2017 to 2020
$1.5M
NIBIB NIH HHS R01 EB023717NIH HHS R01-EB023717
6 · The paper itself

Abstract

backgroundCurrent laparoscopic surgical robots are teleoperated, which requires high fidelity differential motions but does not require absolute accuracy. Emerging applications, including image guidance and automation, require absolute accuracy. The absolute accuracy of the da Vinci Xi robot has not yet been characterized or compared to the Si system, which is now being phased out. This study compares the accuracy of the two.

methodsWe measure robot tip positions and encoder values assessing accuracy with and without robot calibration.

resultsThe Si is accurate if the setup joints are not moved but loses accuracy otherwise. The Xi is always accurate.

conclusionThe Xi can achieve submillimetric average error. Calibration improves accuracy, but excellent baseline accuracy of the Xi means that calibration may not be needed for some applications. Importantly, the external tracking systems needed to account for setup joint error in the Si are no longer required with the Xi.

Indexed as

LaparoscopyRobotic Surgical ProceduresHumansTreatment Outcomeimage-guided surgerysurgical automationsurgical robot calibrationsurgical robotics

Identifiers

PMID32808429
PMCPMC9540612

What OpenQuestion holds

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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.