Evidence map›Paper›PMID 32053495›Full record

ArticleRadiology and oncology2020

Safety margin assessment after microwave ablation of liver tumors: inter- and intrareader variability.

Jan Schaible, Benedikt Pregler, Wolf Bäumler, Ingo Einspieler, Ernst-Michael Jung, Christian Stroszczynski, Lukas Philipp Beyer

Open access · goldAbstract read
In one paragraph

Article in Radiology and oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 35 citations in OpenAlex.

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  10. Simulation of Image-Guided Microwave Ablation Therapy Using a Digital Twin Computational Model.IEEE open journal of engineering in medicine and biology · 2024
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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 at 1 institution in 1 country.

Jan SchaibleDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Benedikt PreglerDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Wolf BäumlerDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Ingo EinspielerDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Ernst-Michael JungDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Christian StroszczynskiDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
Lukas Philipp BeyerDepartment of Radiology, University Medical Center Regensburg, Regensburg Germany.
University Hospital Regensburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background The aim of the study was to evaluate the inter- and intrareader variability of the safety margin assessment after microwave ablation of liver tumors using post-procedure computed tomography (CT) images as well as to determine the sensitivity and specificity of identification remnant tumor tissue. Patients and methods A retrospective analysis of 58 patients who underwent microwave ablation (MWA) of primary or secondary liver malignancies (46 hepatocellular carcinoma, 9 metastases of a colorectal cancer and 3 metastases of pancreatic cancer) between September 2017 and June 2019 was conducted. Three readers estimated the minimal safety margin in millimeters using side-by-side comparison of the 1-day pre-ablation CT and 1-day post-ablation CT and judged whether ablation was complete or incomplete. One reader estimated the safety margin again after 6 weeks. Magnetic resonance imaging (MRI) after 6 weeks was the gold standard. Results The intraclass correlation coefficient (ICC) for estimation of the minimal safety margin of all three readers was 0.357 (95%-confidence interval 0.194-0.522). The ICC for repeated assessment (reader 1) was 0.774 (95%-confidence interval 0.645-0.860). Sensitivity and specificity of the detection of complete tumor ablation, defined as no remnant tumor tissue in 6 weeks follow-up MRI, were 93%/82%/82% and 33%/17%/83%, respectively. Conclusions In clinical practice, the safety margin after liver tumor ablation is often assessed using side-by-side comparison of CT images. In the study, we were able to show, that this technique has a poor reliability (ICC 0.357). From our point of view, this proves the necessity of new technical procedures for the assessment of the safety distance.

Indexed as

AdultAgedAged, 80 and overCarcinoma, HepatocellularColorectal NeoplasmsConfidence IntervalsFemaleHumansLiver NeoplasmsMagnetic Resonance ImagingMaleMargins of ExcisionMicrowavesMiddle AgedNeoplasm, ResidualObserver Variationinterindividual variabilityinterventionalintraindividual variabilityliver neoplasmsradiologysafety margintumor ablation

Identifiers

PMID32053495
PMCPMC7087417
OpenAlexW3005785985

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.