Evidence map›Paper›PMID 27659702›Full record

Trial reportEuropean radiology2017

MR and CT imaging characteristics and ablation zone volumetry of locally advanced pancreatic cancer treated with irreversible electroporation.

Laurien G P H Vroomen, Hester J Scheffer, Marleen C A M Melenhorst, Marcus C de Jong, Janneke E van den Bergh, Cornelis van Kuijk, Foke van Delft, Geert Kazemier, Martijn R Meijerink

Abstract readClinical Trial
In one paragraph

Trial report in European radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. MRI and CT in the follow-up after irreversible electroporation of small renal masses.Diagnostic and interventional radiology (Ankara, Turkey) · 2021
    Trial
  5. Review
  6. Article
  7. Review
  8. PIRET-A Platform for Treatment Planning in Electroporation-Based Therapies.IEEE transactions on bio-medical engineering · 2023
    Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Diffusion MRI of cancer: From low to high b-values.Journal of magnetic resonance imaging : JMRI · 2019
    Review
  19. Article
  20. Radiology · 2018
    Article
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.

Laurien G P H VroomenDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands. la.vroomen@vumc.nl.
Hester J SchefferDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Marleen C A M MelenhorstDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Marcus C de JongDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Janneke E van den BerghDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Cornelis van KuijkDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Foke van DelftDepartment of Gastroenterology and Hepatology, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Geert KazemierDepartment of Surgery, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Martijn R MeijerinkDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess specific imaging characteristics after irreversible electroporation (IRE) for locally advanced pancreatic carcinoma (LAPC) with contrast-enhanced (ce)MRI and ceCT, and to explore the correlation of these characteristics with the development of recurrence.

methodsQualitative and quantitative analyses of imaging data were performed on 25 patients treated with percutaneous IRE for LAPC. Imaging characteristics of the ablation zone on ceCT and ceMRI were assessed over a 6-month follow-up period. Contrast ratio scores between pre- and post-treatment were compared. To detect early imaging markers for treatment failure, attenuation characteristics at 6 weeks were linked to the area of recurrence within 6 months.

resultsPost-IRE, diffusion-weighted imaging (DWI)-b800 signal intensities decreased in all cases (p < 0.05). Both ceMRI and ceCT revealed absent or decreased contrast enhancement, with a hyperintense rim on ceMRI. Ablation zone volume increase was noted on both modalities in the first 6 weeks, followed by a decrease (p < 0.05). In the patients developing tumour recurrence (5/25), a focal DWI-b800 hyperintense spot at 6 weeks predated unequivocal recurrence on CT.

conclusionThe most remarkable signal alterations after pancreatic IRE were shown by DWI-b800 and ceMRI. These early imaging characteristics may be useful to establish technical success and predict treatment outcome. KEY POINTS: • This study describes imaging characteristics after irreversible electroporation (IRE) for pancreatic adenocarcinoma. • Familiarity with typical post-IRE imaging characteristics helps to interpret ablation zones. • Post-IRE, no central and variable rim enhancement are visible on contrast-enhanced imaging. • DWI-b800 may prove useful to predict early tumour recurrence. • Post-IRE examinations reveal an initial volume increase followed by a decrease.

Indexed as

AdenocarcinomaAdultAgedDiffusion Magnetic Resonance ImagingElectroporationFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedMultimodal ImagingNeoplasm Recurrence, LocalPancreatic NeoplasmsTomography, X-Ray ComputedTreatment OutcomeAblationComputed tomographyMagnetic resonance imagingPancreatic neoplasmsTumour volume

Identifiers

PMID27659702
PMCPMC5409808

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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.