Peripheral Arterial Disease Clinical Trial
— AngioIRMNativeOfficial title:
Comparative Study of Non-enhanced Versus Contrast Enhanced MR Angiography in Peripheral Arterial Disease on a 3T MR Scanner.
Verified date | February 2012 |
Source | Rennes University Hospital |
Contact | n/a |
Is FDA regulated | No |
Health authority | France: Institutional Ethical Committee |
Study type | Observational |
Magnetic Resonance Angiography (MRA) of the peripheral arteries has become essential in the
diagnosis and follow-up of peripheral arterial disease.
In clinical routine, the acquisition uses intravenous injection of a Gadolinium based
contrast agent (gadolinium chelates).
Initially, contrast enhanced MR angiography (CE-MRA) was recommended for diabetic patients,
elderly patients and\or patients with chronic renal insufficiency presenting a
contraindication to CT angiography using iodized contrast agent injection.
However, the increase in nephrogenic systematic fibrosis clinical cases, which would be
secondary to gadolinium chelates injection, in patients with chronic renal insufficiency has
restricted the use of CE-MRA. More than 500 cases were described to date in the world.
Its occurrence is currently estimated around 4 % for patients in terminal chronic renal
insufficiency and its mortality around 30 %.
According to the recommendations of AFSSAPS from August, 2007, two gadolinium contrast
agents (Gadodiamide-OMNISCAN *, General Electric HealthCare and Gadopentetate
Dimeglumine-MAGNEVIST *, Bayer HealthCare) are contraindicated if the glomerular filtration
rate is lower than 30 ml/mn.
Non-contrast enhanced MR angiography (NCE MRA) techniques have been proposed to provide
complete and non-invasive investigation of the peripheral vasculature, from the abdominal
aorta to the calf, thus offering patients with chronic renal insufficiency a surrogate with
no side effects.
Moreover, the use of high field (3T) MR imaging and phased array coils offers high quality
images and good signal to noise ratio for peripheral vasculature analysis.
Besides, the acquisition can be repeated if required as it does not require any contrast
injection.
The main objective is to evaluate the quality of the NCE images obtained for every
investigated station from the abdominal aorta to the calf.
The secondary objective is to compare the diagnostic performances of NCE images with those
of CE MRA.
The third objective is to estimate the contribution of automated and dedicated
post-processing tools in optimizing the diagnostic quality of the images.
Status | Completed |
Enrollment | 22 |
Est. completion date | January 2012 |
Est. primary completion date | January 2012 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Any adult patient known or clinically suspected to present a peripheral arterial disease, the assessment of which requires an MRA of the peripheral arteries. - MRA will be prescribed by the vascular surgery or cardiology departments. The patient should be conscious and cooperative. Clear and intelligible oral and written information will be given to the patient. The patients giving written informed consent will be included in the study. Exclusion Criteria: - A contraindication to MRI, in particular pacemakers or implantable defibrillators, cochlear implants, neurosurgical clips, intra-orbital or brain metallic foreign bodies, endo prothesis since less than 4 weeks or osteosynthesis material since less than 6 weeks - Contraindication to the injection of contrast agent: pregnancy, lactation, history of allergic reaction to contrast agent injection. - Hemodynamically unstability, acute respiratory failure, a precarious condition or a need for continuous monitoring incompatible with the constraints of MR imaging. - Age under 18 or under legal protection measure or without social coverage. - A refusal or inability of obtaining informed consent from the patient. Patients withdrawing their informed consent will be excluded. |
Observational Model: Case-Only, Time Perspective: Prospective
Country | Name | City | State |
---|---|---|---|
France | Rennes University Hospital | Rennes |
Lead Sponsor | Collaborator |
---|---|
Rennes University Hospital |
France,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | To evaluate the quality of the NCE images obtained for every investigated station from the abdominal aorta to the calf. | To evaluate the quality of the NCE images obtained for every investigated station from the abdominal aorta to the calf. | 5 months | No |
Secondary | To compare the diagnostic performances of NCE images with those of CE MRA. | To compare the diagnostic performances of NCE images with those of CE MRA. | 5 months | No |
Secondary | To estimate the contribution of automated and dedicated post-processing tools in optimizing the diagnostic quality of the images. | To estimate the contribution of automated and dedicated post-processing tools in optimizing the diagnostic quality of the images. | 5 months | No |
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