Non-Enhanced Magnetic Resonance Angiography With the t-SLIP Technique

Study Overview
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Brief Summary
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The purpose of the study is to create MR images using an investigative technique called pulse sequences with new computer software programs. The sequence will allow us to image vessels without injecting contrast agents.

Detailed Description
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The t-SLIP Investigational Study Sequences are designed to compare t-SLIP to standard MR contrast enhanced imaging techniques to establish the diagnosic benefits of t-SLIP compared to contrast enhanced MR techniques. The t-SLIP Investigational Study Sequences will be used for vascular MRI Imaging including, but no limited to, MRA of the renal, mesenteric, abdominal aortic, iliac and femoral arteries. We will be targeting all adult patients undergoing standard body MRA examinations without anesthesia. The time spatial labeling inversion pulse (t-SLIP) technique is used for non contrast enhanced MR angiography imaging. It produces bright blood spin labeling images by using a single acquisition with a combination of a spatially nonselective inversion pulse and a spatially selective inversion pulse. The nonselective pulse inverts the magnetization of the entire imaging area. The spatially selective pulse, applied upstream of the arteries of interest, reverts those protons to full magnetization. A pre defined time delay between tagging and imaging allows the tagged spins to reach the imaging region and suppresses background tissue within the imaging region to some extent.

Official Title
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Non-Enhanced Magnetic Resonance Angiography With the t-SLIP Technique

Conditions
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Focus of Study is MRI

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients that are considered candidates and scheduled for standard contrast enhanced MRA can be included in the study. Exclusion Criteria: Patients that can not undergo standard MRA

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 95 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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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Standard Sequence Imaging MRI<br>Patients requiring MRI. All Comers accepting study participation. | |
| Additional Pulse Sequence Increased<br>Patients requiring MRI. All comers accepting study participation and the run of additional pulse sequences during MRI procedure. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Degree of enhancement by evaluation of the Thoracic, Aortic, Renal, Iliac and Femoral Vasculature Images | The project proposal is to acquire the additional sequence as part of the standard examination and then to compare the sequence to the standard MR contrast enhanced imaging techniques in order to establish the diagnostic benefits of this sequence compared to contrast enhanced MR techniques. | 2 Years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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MRI, Angiography, Pulse Sequence