ClinicalTrials.gg
CompletedNCT04849975CAPEOS®Updated Aug 25, 2023

Comparison of Pelvimetric Measurements Between MRI and Low-dose Stereoradiography (EOS® Imaging System)

An interventional study of Pelvimetric measurements in Breech Fetal Presentation, sponsored by University Hospital, Grenoble. Completed at 1 site in France. Open to female participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-08-25.

Sponsored by University Hospital, Grenoble · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
35
Allocation
Not applicable
Ages
18 Years and older
Sex
Female
01

Study summary

The main objective of this study is to compare pelvimetric measurements performed by Magnetic Resonance Imaging (MRI) and by the EOS imaging system.

Read the detailed description

During pregnancy, after failure of External Manual Version (EMV) in case of breech fetal presentation, a radiological pelvimetry is performed to evaluate the measurements of the pelvis and decide on the appropriate mode of delivery.

Several imaging modalities are used, including pelvic computed tomography (CT),and magnetic resonance imaging (MRI) of the pelvis.

CT scan has the disadvantage of maternal irradiation and MRI has the disadvantage of an inaccurate morphological analysis.The EOS® system is an imaging tool used in radiopediatric to allow precise morphological analysis of bone masses with minimal irradiation.

The quality of the morphological analysis and measurements provided by the EOS® imaging system is the reason for proposing this study comparing the pelvimetric measurements obtained by MRI and by the EOS® imaging system.

02

Conditions studied

  • Breech Fetal Presentation

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Keywords

  • Breech Fetal Presentation
  • MRI
  • EOS imaging system
  • Pelvimetric measurements
03

In context

Breech Presentation

41 studies on the registry are indexed under Breech Presentation; 10 are open to participants now.

This study's enrollment of 35 is below the median of 119 across 31 interventional studies indexed under Breech Presentation.

Browse Breech Presentation studies →

Lead sponsor

University Hospital, Grenoble is the lead sponsor of 837 studies on the registry; 207 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients > 18 years of age
  • Patient requiring pelvimetry (breech fetus)
  • Gestation > 36 SA (weeks of amenorrhea)
  • Patients with \< 35
  • Affiliated to social security or similarly regime
  • Patients who gave their consent to participate in the study (Patient having agreed to perform both examinations: MRI and EOS system)

Exclusion criteria

Exclusion Criteria:

  • Patient with a to MRI (claustrophobia, pace-maker, intracorporeal metallic element)
  • Patient with a contraindication to performing EOS® (person not standing alone)
  • Patient who are in exlusion period of another interventiionnal study
  • Person deprived of freedom by judicial or administrative decision; person hospitalized for psychitric care; person under legal protection measure.
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
35 participants (actual)

Study arms

  • Experimental
    Pelvimetry group

    The participants oh this group will successively perform MRI pelvimetry and EOS imaging.

    Other: Pelvimetric measurements

Interventions

  • OtherPelvimetric measurements

    The patients in this group are pregnant women after failure of external manual version (EMV) in case of breech fetal presentation. The participants will successively perform MRI pelvimetry (conventional management) and EOS imaging.

06

What researchers measure

Primary outcomes

  1. Estimation of the reliability of pelvimetric measurements using Transverse Inlet Diameter measurement

    Transverse Inlet Diameter Measurement obtained by EOS® system versus MRI is evaluated in millimeters.

    Time frame: Up to 1 day

  2. Estimation of the reliability of pelvimetric measurements using ante posterior diameter measurement

    Ante posterior diameter of the pelvic inlet obtained by using EOS® system versus MRI is evaluated in millimeters.

    Time frame: Up to 1 day

  3. Estimation of the reliability of pelvimetric measurements using BiSpinous Diameter measurement

    BiSpinous Diameter obtained by EOS® system versus MRI is evaluated in millimeters.

    Time frame: Up to 1 day

  4. Estimation of the reliability of pelvimetric measurements using Bi-ischiatic mesurement

    Bi-ischiatic measurement obtained by EOS® system versus MRI is evaluated in millimeters.

    Time frame: Up to 1 day

  5. Estimation of the reliability of pelvimetric measurements using Magin's Index calculation

    Magnin's Index calculation obtained by using EOS® system versus MRI is evaluated in millimeters.

    Time frame: Up to 1 day

Secondary outcomes

  1. Pelvis morphological description using Cadwell and Moloy classification

    Caldwell and Moloy classification (scale) obtained by MRI and EOS® system is qualified.

    Time frame: Up to 1 day

  2. Pelvis morphological description using subpubic angle measurement

    The measurement of the subpubic angle (in degree) obtained by MRI and EOS® system is qualified.

    Time frame: Up to 1 day

  3. Pelvis morphological description using obturating holes appearance

    The appearance of the obturating holes (descriptive analysis) obtained by MRI and EOS® system is qualified.

    Time frame: Up to 1 day

  4. Characterization of radiation doses received by EOS® system.

    Estimation of irradiation

    Time frame: Up to 1 day

  5. Evaluation of the intra and inter-observer reproducibility for radiological interpretation

    Blind independent reading of MRI and EOS® images by two radiologists on two different days.

    Time frame: 4 days

  6. Evaluation of the intra and inter-observer reproducibility for clinical interpretation

    Blind independent reading of MRI and EOS® images by two independent clinician on two different days with conclusion on the mode of delivery.

    Time frame: 4 days

07

Study locations

1 site
  • Pr Riethmuller Didier
    Grenoble, 38043, France
08

References and documents

Publications

  • Aubry S, Padoin P, Petegnief Y, Vidal C, Riethmuller D, Delabrousse E. Can three-dimensional pelvimetry using low-dose stereoradiography replace low-dose CT pelvimetry? Diagn Interv Imaging. 2018 Sep;99(9):569-576. doi: 10.1016/j.diii.2018.02.008. Epub 2018 Mar 19. PubMed 29567122 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2021 to primary completion in Jul 2023, 20 months.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 11, 2021
First posted
Apr 20, 2021
StartActual
Nov 9, 2021
Primary completionActual
Jul 24, 2023
CompletionActual
Jul 24, 2023
Last update
Aug 25, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 25, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04849975
Responsible party
Sponsor
First posted
Apr 20, 2021
Start date
Nov 9, 2021
Primary completion
Jul 24, 2023
Completion
Jul 24, 2023
Last update
Aug 25, 2023

Study contacts

Didier R RIETHMULLER, MD, PhD
principal investigator · University Hospital, Grenoble

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.

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