Magnetic Resonance Imaging Combined With Venous Ultrasonography of the Legs for Pulmonary Embolism (IRM-EP2)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.

ClinicalTrials.gov Identifier: NCT02059551

Recruitment Status : Active, not recruiting

First Posted : February 11, 2014

Last Update Posted : October 2, 2018

Sponsor:

Information provided by (Responsible Party):

Assistance Publique - Hôpitaux de Paris

Study Description

Brief Summary:

Magnetic resonance imaging (MRI) represents a promising technique but can not be used as an alternative test to multidetector CT in patients with suspicion of pulmonary embolism (PE) due to its low sensitivity and high proportion of inconclusive MRI. The purpose of this study is to evaluate diagnostic performances of MRI combined with venous ultrasonography of the legs in patients with suspicion of PE.

Condition or disease	Intervention/treatment	Phase
Pulmonary Embolism	Procedure: MRI combined with venous ultrasonography of the legs	Not Applicable

Study Design


Study Type :	Interventional (Clinical Trial)
Estimated Enrollment :	1058 participants
Intervention Model:	Single Group Assignment
Masking:	None (Open Label)
Primary Purpose:	Diagnostic
Official Title:	Diagnostic Performances of Magnetic Resonance Imaging Combined With Venous Ultrasonography of the Legs for Pulmonary Embolism
Actual Study Start Date :	August 2013
Estimated Primary Completion Date :	November 28, 2018
Estimated Study Completion Date :	November 28, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Diagnostic Imaging MRI Scans Pulmonary Embolism Ultrasound

U.S. FDA Resources

Arms and Interventions

Arm	Intervention/treatment
Experimental: Intervention In case of positive D-dimer testing or in patients with a high clinical probability of PE, these patients have MRI protocol combined with venous ultrasonography of the legs. MRI includes 2 different sequences: Unenhanced steady-state-free precession sequences (SSFP) sequences and angiography sequences. (please see \\\"intervention section\\\" for more details). MRI readings will be performed centrally by two independent readers blinded to the results of diagnostic reference standard. Venous ultrasonography of the legs will be interpreted locally.	Procedure: MRI combined with venous ultrasonography of the legs In case of positive D-dimer testing or in patients with a high probability of PE, MRI and a venous ultrasonography of the legs are done.MRI protocol includes 2 sequences: 1-Unenhanced steady-state-free precession sequences (SSFP) are acquired first without ECG-gating or breath-holding in the axial plane in the multiphase cine mode, with 6 phases per location.The acquisition is repeated to cover 2-3 of the thorax, from the roof of the aorta to the diaphragm. 2- A pulmonary gradient recalled echo (GRE) sequence is performed in the axial plane.The acquisition is triggered to start when contrast enhancement occurred in the right ventricle.Two acquisitions are necessary to cover the anatomy. For each acquisition, 0.15 mL kg-1 body weight of DOTAREM Gadolinium is injected at a rate of 3 mL s-1 followed by an injection of 15 mL of normal saline at 3 mL s-1.Venous ultrasonography of the legs: the examination consists of a real-time B-mode examination of the common femoral and popliteal veins.

Arm

Intervention/treatment

Experimental: Intervention

In case of positive D-dimer testing or in patients with a high clinical probability of PE, these patients have MRI protocol combined with venous ultrasonography of the legs. MRI includes 2 different sequences: Unenhanced steady-state-free precession sequences (SSFP) sequences and angiography sequences. (please see \\\"intervention section\\\" for more details). MRI readings will be performed centrally by two independent readers blinded to the results of diagnostic reference standard. Venous ultrasonography of the legs will be interpreted locally.

Procedure: MRI combined with venous ultrasonography of the legs

In case of positive D-dimer testing or in patients with a high probability of PE, MRI and a venous ultrasonography of the legs are done.MRI protocol includes 2 sequences: 1-Unenhanced steady-state-free precession sequences (SSFP) are acquired first without ECG-gating or breath-holding in the axial plane in the multiphase cine mode, with 6 phases per location.The acquisition is repeated to cover 2-3 of the thorax, from the roof of the aorta to the diaphragm. 2- A pulmonary gradient recalled echo (GRE) sequence is performed in the axial plane.The acquisition is triggered to start when contrast enhancement occurred in the right ventricle.Two acquisitions are necessary to cover the anatomy. For each acquisition, 0.15 mL kg-1 body weight of DOTAREM Gadolinium is injected at a rate of 3 mL s-1 followed by an injection of 15 mL of normal saline at 3 mL s-1.Venous ultrasonography of the legs: the examination consists of a real-time B-mode examination of the common femoral and popliteal veins.

Outcome Measures

Primary Outcome Measures :

To assess diagnostic performances of MRI combined with venous ultrasonography of the legs in reference to Multi-Detector Computed Tomography and 3 months clinical follow-up [ Time Frame: 51 months ]
sensitivity, specificity, positive and negative likelihood ratios of the combination of MRI and venous ultrasonography of the legs

Secondary Outcome Measures :

To assess the diagnostic accuracy of a strategy combining clinical probability, D-dimer measurement, MRI and venous ultrasonography of the legs for PE [ Time Frame: 51 months ]
3-month thromboembolic events rate in patients who were left untreated on the basis of negative D-dimer measurement or negative combination of MRI + venous ultrasonography of the legs
To assess diagnostic performances of each MRI sequence combined or not to venous ultrasonography of the legs in reference to Multi-Detector Computed Tomography and 3 months clinical follow-up [ Time Frame: 51 months ]
sensitivity, specificity, positive and negative likelihood ratios of each MRI sequence (unenhanced 2D steady-state-free-precession (SSFP) and contrast-enhanced 3D angiographic MR sequences) combined or not to venous ultrasonography of the legs in reference to Multi-Detector Computed Tomography and 3 months clinical follow-up
inter-reader agreement for MRI [ Time Frame: 51 months ]
Kappa coefficient of concordance calculated on the diagnoses on MRI by two radiologists blinded to the diagnostic reference strategy (multidetector CT angiography and follow-up 3 months).

Eligibility Criteria

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:	18 Years to 99 Years (Adult, Older Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

Inclusion criteria :

age > or = 18 years
clinical suspicion of PE
Affiliate (e) to a social security
provide written informed consent

Exclusion criteria :

Unstable patient clinically in shock on arrival at the emergency department
Current pregnancy
Life expectancy less than 3 months (eg terminal cancer)
Follow up at 3 months impossible
Anticoagulation curative> 48 hours prior to inclusion
Cons-indication to spiral chest CT: allergy to contrast or creatinine clearance below 30 ml / min calculated by the Cockcroft
Cons-indication to MRI claustrophobia, presence of intraocular metallic implant or a pacemaker, an allergy to gadolinium, morbid obesity (weight> 130 kg, anteroposterior> 60 cm diameter)

Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02059551

Locations


France
Hôpital Européen Georges Pompidou
Paris, France, 75015

Sponsors and Collaborators

Assistance Publique - Hôpitaux de Paris

Investigators


Principal Investigator:	SANCHEZ Olivier, MD, PhD	Université Paris Descartes; Sorbonne Paris Cité; Service de Pneumologie et Soins Intensifs, Hôpital Européen Georges POmpidou; AP-HP

More Information

Publications:

Revel MP, Sanchez O, Lefort C, Meyer G, Couchon S, Hernigou A, Niarra R, Chatellier G, Frija G. Diagnostic accuracy of unenhanced, contrast-enhanced perfusion and angiographic MRI sequences for pulmonary embolism diagnosis: results of independent sequence readings. Eur Radiol. 2013 Sep;23(9):2374-82. doi: 10.1007/s00330-013-2852-8. Epub 2013 May 8.

Revel MP, Sanchez O, Couchon S, Planquette B, Hernigou A, Niarra R, Meyer G, Chatellier G. Diagnostic accuracy of magnetic resonance imaging for an acute pulmonary embolism: results of the 'IRM-EP' study. J Thromb Haemost. 2012 May;10(5):743-50. doi: 10.1111/j.1538-7836.2012.04652.x.

Stein PD, Chenevert TL, Fowler SE, Goodman LR, Gottschalk A, Hales CA, Hull RD, Jablonski KA, Leeper KV Jr, Naidich DP, Sak DJ, Sostman HD, Tapson VF, Weg JG, Woodard PK; PIOPED III (Prospective Investigation of Pulmonary Embolism Diagnosis III) Investigators. Gadolinium-enhanced magnetic resonance angiography for pulmonary embolism: a multicenter prospective study (PIOPED III). Ann Intern Med. 2010 Apr 6;152(7):434-43, W142-3. doi: 10.7326/0003-4819-152-7-201004060-00008.


Responsible Party:	Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier:	NCT02059551 History of Changes
Other Study ID Numbers:	P120133
First Posted:	February 11, 2014 Key Record Dates
Last Update Posted:	October 2, 2018
Last Verified:	September 2018

Keywords provided by Assistance Publique - Hôpitaux de Paris:


pulmonary embolism magnetic resonance imaging venous ultrasonography of the legs diagnostic performances

Additional relevant MeSH terms:


Embolism Pulmonary Embolism Embolism and Thrombosis Vascular Diseases	Cardiovascular Diseases Lung Diseases Respiratory Tract Diseases

To Top