Post EVAR Endoleak Detection : Model-based Iterative Reconstruction (MBIR) vs Adaptive Statistical Iterative Reconstruction (ASIR) CTA; a Prospective Study

Study Overview
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Brief Summary
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The purpose of the study is to compare the accuracy of the diagnosis of endoleak in patient with EVAR comparing Adaptive statistical iterative reconstruction (ASIR) CTA and Model-based iterative reconstruction (MBIR- VEO TM).

Detailed Description
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Background: The aortic aneurysm is a common and serious disease share its complications (rupture ) , often fatal. It is recognized that pass a certain diameter surgical or endovascular treatment reduces mortality by avoiding treatment in extreme provider of high morbidity and mortality emergency. Endovascular anevrysm repair (EVAR) treatment has proven effective but unfortunately this treatment presents complications ( endoleak ) should be sought systematically by repeated checks CT . The irradiation in these patients is a major problem with repeated exposure radiation. The follow up of these patients requires repeated CT because endoleaks can be delayed. Iterative reconstruction of previous generation have reduced the dose , we dispose the last Model-based iterative reconstruction ( VEO  ) for a further reduction of patient dose . This technique has not yet been evaluated in the detection of endoleaks. The purpose of the study is to compare conventional CTA (ASIR50) ( gold standard now) with Model-based iterative reconstruction (MBIR- VEO TM) in the detection ( and classification ) of endoleaks in patients traited by EVAR. All patient admited in Radiology to follow up his EVAR is included in the study and receive both CT: Adaptive statistical iterative reconstruction (ASIR) CTA and Model-based iterative reconstruction (MBIR- VEO TM) and the result of thoses 2 CT are compared by 2 readers (blinded of the result) The BMI , other complications, the DLP , dose reduction and quality of the examination is noted .

Official Title
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Post EVAR Endoleak Detection : Model-based Iterative Reconstruction (MBIR) vs Adaptive Statistical Iterative Reconstruction (ASIR) CTA; a Prospective Study

Conditions
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Post EVAR Endoleak Detection

Intervention / Treatment
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* Other: abdominal MDCT examination


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: informed and a written consent all patients consulting to follow up his EVAR 18-90 years French Exclusion Criteria: pregnant juvenile patients patient who refusal the study CI of contrast iodine injection : CI of ultravist llergy renal failure creatinemy <30 ml/min

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: EVAR<br> | Other: abdominal MDCT examination<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Presence or absence of endoleak after EVAR using CT evaluation |  | at day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Type of endoleak, BMI (body mass index |  | at day 1 | 
| Diameter of the aneurysm |  | at day 1 | 
| Objective and subjective image quality |  | at day 1 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Endovascular aneurysm repair EVAR, Endoleak/diagnosis, VEOTM, Model-based iterative reconstruction (MBIR), Adaptive statistical iterative reconstruction (ASIR), Aortic Aneurysm, Low dose, Prospective, CTA