Reference Ranges for Placental Perfusion Using Magnetic Resonance Imaging (MRI)PLACENTIMAGE

July 17, 2020 updated by: Assistance Publique - Hôpitaux de Paris
To evaluate the feasibility of functional MRI method developed in an animal model and to construct normal reference ranges for in vivo placental perfusion using functional MRI. This will be based on imaging studies in patients undergoing termination of pregnancy (TOP) at 16 to 32 weeks' for fetal reason in a tertiary referral center.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Objective:

To evaluate the feasibility of functional MRI method developed in an animal model and to construct normal reference ranges for in vivo placental perfusion using functional MRI. This will be based on imaging studies in patients undergoing termination of pregnancy (TOP) at 16 to 32 weeks' for fetal reason in a tertiary referral center.

Method:

All patients undergoing TOP at 16 to 32 weeks will be offered to participate in this study.

120 patients will be included. 15 per group of weeks of gestation: 16+0-17+6 SA, 18+0-19+6 SA, 20+0-21+6 SA, 22+0-23+6 SA, 24+0-25+6 SA, 26+0-27+6 SA, 28+0-29+6 SA, 30+0-31+6 WG.

MRI will be performed in the same hospital, during hospital stay, within 45 minutes.

Two MRI sequences will be used to measure placental perfusion:

  • dynamic sequences using Gd contrast agent.
  • " spin tagging ", which do not need any contrast agent. Perfusion will be modelled using compartmental analysis. Reference ranges will be build up by statistical modelling. Gadolinium assays will be performed on amniotic fluid and placental tissue following TOP.

Duration of inclusion: 24 months.

Duration of patient participation: 45 minutes.

Expected results:

  • Feasibility in routine practice.
  • Reference ranges for placental perfusion.
  • Comparison between the two measurements methods.

Adverse outcome measure:

Nausea, vomiting, lack of comfort and other adverse outcome.

Study Type

Observational

Enrollment (Actual)

135

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Paris, France, 75015
        • Necker Enfants Malades

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

All patients undergoing TOP at 16 to 32 weeks will be offered to participate in this study.

Description

Inclusion Criteria:

  • Women > 18 years,
  • Undergoing TOP for fetal reason,
  • Informed signed consent.

Exclusion Criteria:

  • Placental adhesion anomaly,
  • Growth restriction,
  • Contrast agent allergy,
  • Absent consent,
  • Contraindication of MRI or Gadolinium,
  • Renal insufficiency,
  • Placental abnormality at pathological examination.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Establishment of physiological reference range of placental perfusion
Time Frame: 45 MIN
Establishment of physiological reference range of placental perfusion
45 MIN

Secondary Outcome Measures

Outcome Measure
Time Frame
To quantify in vivo and by a not invasive way the microscopic physiological phenomena relative to the placental perfusion and in the local transcapillary exchanges of the placenta
Time Frame: 45 MIN
45 MIN
Comparison between the two measurements methods.
Time Frame: 45 MIN
45 MIN

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assistance Publique - Hôpitaux de Paris

Investigators

  • Principal Investigator: Laurent Salomon, MCU PH, Assistance Publique - Hôpitaux de Paris

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 1, 2010

Primary Completion (Actual)

March 1, 2018

Study Completion (Actual)

September 1, 2018

Study Registration Dates

First Submitted

February 26, 2010

First Submitted That Met QC Criteria

March 24, 2010

First Posted (Estimate)

March 25, 2010

Study Record Updates

Last Update Posted (Actual)

July 20, 2020

Last Update Submitted That Met QC Criteria

July 17, 2020

Last Verified

July 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • P 081111
  • 2009-A01024-63 (Registry Identifier: IDRCB)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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