Evidence map›Paper›PMID 39093415›Full record

ArticleEuropean radiology2025

Multicenter and inter-software evaluation of ablative margins after thermal ablation of colorectal liver metastases.

Gregor Laimer, Koen H M Verdonschot, Lina Kopf, Susan van der Lei, Yannick Scharll, Gerjon Hannink, Sjoerd F M Jenniskens, Martijn R Meijerink, Reto Bale, Christiaan G Overduin

Abstract readMulticenter Study
In one paragraph

Article in European radiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Trial
  2. Estimation of tumor coverage after RF ablation of hepatocellular carcinoma using single 2D image slices.International journal of computer assisted radiology and surgery · 2025
    Trial
  3. Trial
  4. [Interventional therapeutic strategies for metastatic liver cancer].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Gregor Laimer *Department of Radiology, Interventional Oncology, Stereotaxy and Robotics, Medical University Innsbruck, Innsbruck, Austria.
Koen H M Verdonschot *Department of Medical Imaging, Radiology, Radboud University Medical Center, Nijmegen, Netherlands.
Lina KopfDepartment of Radiology, Interventional Oncology, Stereotaxy and Robotics, Medical University Innsbruck, Innsbruck, Austria.
Susan van der LeiDepartment of Radiology and Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, Netherlands.
Yannick ScharllDepartment of Radiology, Interventional Oncology, Stereotaxy and Robotics, Medical University Innsbruck, Innsbruck, Austria.
Gerjon HanninkDepartment of Medical Imaging, Radiology, Radboud University Medical Center, Nijmegen, Netherlands.
Sjoerd F M JenniskensDepartment of Medical Imaging, Radiology, Radboud University Medical Center, Nijmegen, Netherlands.
Martijn R MeijerinkDepartment of Radiology and Nuclear Medicine, Amsterdam UMC location Vrije Universiteit Amsterdam, Amsterdam, Netherlands.
Reto BaleDepartment of Radiology, Interventional Oncology, Stereotaxy and Robotics, Medical University Innsbruck, Innsbruck, Austria.
Christiaan G OverduinDepartment of Medical Imaging, Radiology, Radboud University Medical Center, Nijmegen, Netherlands. kristian.overduin@radboudumc.nl.ORCID http://orcid.org/0000-0002-4589-4357

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the association between minimal ablative margin (MAM) and local tumor progression (LTP) following CT-guided thermal ablation of colorectal liver metastases (CRLM) in a multicenter cohort and across two confirmation software. MATERIALS AND

methodsThis multicenter retrospective study included patients who underwent CT-guided radiofrequency or microwave ablation for CRLM between 2009 and 2021 in three institutions. Three-dimensional (3D) MAM was retrospectively assessed using dedicated ablation confirmation software by automatic non-rigid (Ablation-fit) or semi-automatic rigid co-registration (SAFIR) of intraprocedural pre- and post-ablation contrast-enhanced CT scans by two independent reader teams blinded to patient outcomes. LTP was assessed on a per-tumor basis. Factors associated with LTP-free survival were assessed using multivariable Cox regression analysis.

resultsOverall, 113 patients (mean age: 67 ± 10 years; 78 men) who underwent thermal ablation for 189 CRLM (mean diameter: 1.9 ± 1.1 cm) met the inclusion criteria. 173/189 (92%) CRLM could be successfully analyzed using both software. Over a median follow-up of 31 months (IQR: 22-47), 21 of 173 CRLM (12.1%) developed LTP. On multivariable analysis, 3D MAM was independently associated with LTP in both software (Ablation-fit: HR 0.47, 95% CI: 0.36-0.61, p < 0.001; SAFIR: HR 0.42, 95% CI: 0.32-0.55, p < 0.001). No LTP was observed in CRLM ablated with MAM ≥ 4 mm (Ablation-fit) and ≥ 5 mm (SAFIR). The per-tumor median absolute difference in MAM quantification between both software was 2 mm (IQR: 1-3).

conclusionMAM was independently associated with LTP after thermal ablation of CRLM across multicenter data and two confirmation software. Ablations achieving a MAM ≥ 5 mm were associated with local control in both software. CLINICAL RELEVANCE STATEMENT: MAMs from intraprocedural contrast-enhanced CT were independently associated with LTP after thermal ablation of CRLM across multicenter data and two confirmation software, with a margin ≥ 5 mm associated with local control in both software. KEY POINTS: Sufficient ablative margins are critical for local control following thermal ablation of CRLM. Intraprocedural CT-derived MAM was the only independent factor associated with LTP across two confirmation software. No LTP was observed in CRLM ablated with a MAM ≥ 5 mm.

Indexed as

Colorectal NeoplasmsLiver NeoplasmsMargins of ExcisionRadiofrequency AblationSoftwareTomography, X-Ray ComputedAgedFemaleHumansMaleMicrowavesMiddle AgedRetrospective StudiesTreatment OutcomeImaging (three-dimensional)Liver neoplasmsRadiofrequency ablationTreatment outcome

Identifiers

PMID39093415
PMCPMC11782453

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.