Detection of Amyloid Deposits in the Wrist by MRI With Mapping and High Resolution Sequences in Systemic Amyloidosis (AMYLOCARP)

Study Overview
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Brief Summary
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This study is based on the hypothesis that MRI could make it possible to non-invasively detect these amyloid deposits at the level of the wrist using parametric sequences known as T1 mapping, in the form of an extension of T1 in the wrists. areas where amyloid deposits are found in the wrist.

Official Title
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Detection of Amyloid Deposits in the Wrist by MRI With Mapping and High Resolution Sequences in Systemic Amyloidosis

Conditions
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Amyloid, Systemic Amyloidosis

Intervention / Treatment
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* Procedure: MRI


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient group: Woman or man over 18 years old With ATTR or AL cardiac amyloidosis with or without carpal tunnel. The diagnosis of amyloidosis must be proven by a positive myocardial biopsy or diphosphonate scintigraphy. Affiliate or beneficiarie of a social security scheme. Having signed the free and informed consent. Healthy volunteers: Woman or man over 18 years old Affiliate or beneficiarie of a social security scheme. Having signed the free and informed consent. Exclusion Criteria: Patient group: Patients participating in another clinical study. Patients suffering from rheumatoid arthritis or other autoimmune disease (vasculitis, lupus, scleroderma, etc.) Patients with a medical history of wrist surgery (exclude the operated side). Patients with a contraindication to performing an MRI (pacemaker, etc.) Pregnant or breastfeeding women. Protected patients: Adults under guardianship, curatorship or other legal protection, deprived of their liberty by judicial or administrative decision. Healthy volunteer: Volunteers participating in another clinical study. Volunteers suffering from rheumatoid arthritis or other autoimmune disease (vasculitis, lupus, scleroderma, etc.) Pregnant or breastfeeding women. Volunteer with a contraindication to performing an MRI (pacemaker, etc.) Protected volunteers: Adults under guardianship, guardianship or other legal protection, deprived of their liberty by judicial or administrative decision.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Screening
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Patients with cardiac amyloidosis<br> | Procedure: MRI<br>* Wrist MRI<br>|
| Placebo Comparator: Healthy volunteers<br> | Procedure: MRI<br>* Wrist MRI<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| T1 measurement (ms) associated with each of the 5 regions of interest at the wrist |  | 1 day |