Evidence map›Paper›PMID 36590551›Full record

ArticleHeliyon2022

The influence of reference electrode in electrical impedance tomography.

Zhimin Lin, Weixiang Huang, Zhijun Gao, Lin Yang, Yimin Li, Yu Lu, Meng Dai, Feng Fu, Ling Sang, Zhanqi Zhao

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

Article in Heliyon, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.4field-weighted citation impact, top 42% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. 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

10 authors at 3 institutions in 2 countries.

Zhimin LinState Key Lab of Respiratory Diseases, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, The First Affiliated Hospital of Guangzhou Medical University, Department of Critical Care Medicine, Guangzhou, China.
Weixiang HuangState Key Lab of Respiratory Diseases, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, The First Affiliated Hospital of Guangzhou Medical University, Department of Critical Care Medicine, Guangzhou, China.
Zhijun GaoDepartment of Aerospace Medicine, Air Force Medical University, Xi'an, China.
Lin YangDepartment of Aerospace Medicine, Air Force Medical University, Xi'an, China.
Yimin LiState Key Lab of Respiratory Diseases, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, The First Affiliated Hospital of Guangzhou Medical University, Department of Critical Care Medicine, Guangzhou, China.
Yu LuHerz Medical, Suzhou, China.
Meng DaiDepartment of Biomedical Engineering, Air Force Medical University, Xi'an, China.
Feng FuDepartment of Biomedical Engineering, Air Force Medical University, Xi'an, China.
Ling SangState Key Lab of Respiratory Diseases, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, The First Affiliated Hospital of Guangzhou Medical University, Department of Critical Care Medicine, Guangzhou, China.
Zhanqi ZhaoDepartment of Biomedical Engineering, Air Force Medical University, Xi'an, China.
Air Force Medical University · CNFirst Affiliated Hospital of Guangzhou Medical University · CNFurtwangen University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Some electrical impedance tomography (EIT) devices equip reference electrodes. In practice, it is not uncommon to observe high contact impedance for the reference electrode. The influence of bad contact reference electrode on data quality is unknown. The study aimed to investigate the influence of reference electrode on EIT image reconstruction. Methods: Thirty lung healthy volunteers were prospectively examined with EIT. The subjects were spontaneously breathing in supine position. Three scenarios were constructed: 1. Normal measurement; 2. Reference electrode disconnected without recalibration; 3. Reference electrode disconnected, and the measurement restarted after recalibration of the system. EIT-based parameters measuring spatial and temporal ventilation distributions were calculated and compared. A so-call deviation score was calculated to assess the differences in EIT parameters between scenarios 2 and 1, between 3 and 1. Results: The absolute differences for all parameters were significantly higher than zero (p < 0.01 for all parameters and scenarios). Deviation score for scenario 2 was 4.5 ± 3.5. Four subjects had a deviation score of 0 in scenario 2 and five subjects had a score of 1. The deviation in scenario 3 was higher (6.1 ± 3.1). No subjects had a score of 0 and only two subjects had a score of 1. Conclusions: For EIT systems that equips with reference electrode, it is important to ensure the proper contact and functionality of the reference electrode. The EIT data quality would remain unchanged in only a small portion of subjects.

Indexed as

Center of ventilationElectrical impedance tomographyGlobal inhomogeneity indexReference electrodeRegional ventilation delayRegions of interestRespiratory rate

Identifiers

PMID36590551
PMCPMC9800185
OpenAlexW4312084291

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.