MRI and Orbital Tumours (MEDORT) (MEDORT)

April 15, 2024 updated by: Fondation Ophtalmologique Adolphe de Rothschild

MRI for the Etiological Diagnosis of Orbital Tumours

Orbital masses develop at the expense of the orbital structures lacrimal glands, oculomotor muscles, optic nerve, meningeal spaces, peripheral nerves, bone wall, orbital fat, lymphoid structures or vascular structures. These masses can be tumors, benign or malignant, or pseudotumor, mainly represented by specific or non-specific orbital inflammation.

Pathology is of considerable importance for the diagnosis and the treatment of those masses. However, biopsy or surgical resection of the orbital masses is sometimes difficult and dangerous outside expert centers.

The identification of a non-invasive technique for distinguishing tumors from pseudotumors, thus avoid in some cases a biopsy, would be a major contribution for the patients.

The MRI assessment performed routinely in a patient with an orbital mass includes morphological sequences T1, T2 fat suppression, T1 injected fat suppression, diffusion. This exploration requires, regardless of the performed research, a contrast agent injection (0.1 mg / kg weight of Gadobutrol®).

In this research protocol, during the injection of the contrast agent performed during the MRI assessment performed routinely, a DCE perfusion sequence, which consists of a repeated acquisition at short intervals of a volume gradient echo T1, will be added. This acquisition will be preceded by two short series for calibration. The post treatment will include parametric permeability cards (Ktrans) and plasmatic volume (Vp), evaluating one or more regions of interest in the tumor, normal lacrimal glands, jaw muscles and nasal mucosa being the reference. It will also be added a magnetic susceptibility EPI sequence type. All the qualitative parameters (T1, T2, T1 injected, distribution, low signal intensity in susceptibility) and quantitative (Ktrans, Vp, relative intensity enhancement, apparent diffusion coefficient) parameters will be collected.

The result of the pathological exam of the biopsy or of the surgical specimen, which is the gold-standard, will be collected.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

200

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, 75019
        • Fondation ophtalmique Adolphe de Rothschild

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

Sampling Method

Non-Probability Sample

Study Population

Patient aged over 18 years, with an orbital mass for which a biopsy or a resection is planned, coming for an MRI, before any surgical treatment

Description

Inclusion Criteria:

  • Patient aged over 18 years, with an orbital mass for which a biopsy or a resection is planned, coming for an MRI, before any surgical treatment

Exclusion Criteria:

  • Absolute or relative contra-indication to MRI or to a contrast agent gadolinium injection (including pregnant or likely to be, breastfeeding women)
  • Patient under guardianship
  • Patient not willing to participate.
  • Lack of affiliation to social security or medical state aid (AME) or universal health coverage (CMU)
  • Motion artifact on the sequences, not corrected by the repeat sequences
  • Metal artifact prohibiting the analysis of the region of interest
  • Biopsy or resection not performed, particularly if the orbital mass is due to an infection
  • MRI findings allowing a diagnosis without the need for pathology

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: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Sensitivity and specificity based on the patterns of the intra voxel incoherent motion, the dynamic susceptibility contrast and enhancement, for distinguishing orbital tumors from orbital pseudotumor, the gold standard being the pathological exam.
Time Frame: 1 month
1 month

Collaborators and Investigators

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

Sponsor

Fondation Ophtalmologique Adolphe de Rothschild

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

May 27, 2015

Primary Completion (Actual)

May 25, 2020

Study Completion (Actual)

May 25, 2020

Study Registration Dates

First Submitted

March 17, 2015

First Submitted That Met QC Criteria

March 24, 2015

First Posted (Estimated)

March 30, 2015

Study Record Updates

Last Update Posted (Actual)

April 16, 2024

Last Update Submitted That Met QC Criteria

April 15, 2024

Last Verified

April 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ALR_2015-8

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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