Non-contrast Enhanced Cardiac Magnetic Resonance Normal Values and Imaging Protocols

Study Overview
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Brief Summary
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One of the main problems in cardiac magnetic resonance (MR) investigations is the strong dependence of the achieved image quality on optimal settings of sequence parameters and anatomical and physiological situations and it is well known that the diagnostic impact of cardiac MR investigations crucially depends on the adaption of imaging protocols to patients' state and ability to cooperate. The aim of the present study is the evaluation and optimization of various 1.5 Tesla and 3 Tesla cardiac MR investigation protocols without application of contrast agent as well as the acquisition of normal values for new cardiac MR images techniques: normal myocardial morphology: T1-, T2- and T2*-weighted imaging and acquisition of normal values of magnetic relaxation times (sequence- and protocol dependent), normal cardiac function: systolic and diastolic function (sequence- and protocol dependent), cardiac anatomy and coronary artery imaging: feasibility to evaluate length, diameter and blood flow (sequence- and protocol dependent), normal blood flow topologies in the heart and the surrounding great vessels: 2D- and 3D blood flow imaging and evaluation techniques (sequence- and protocol dependent).

Official Title
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Optimization of Non-contrast Enhanced 1.5 Tesla and 3 Tesla Cardiac Magnetic Resonance Imaging Techniques and Acquisition of Normal Values

Conditions
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Healthy

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: No history of cardiac or pulmonary diseases ability to give informed consent Exclusion Criteria: General MR exclusion criteria eg. patients with metal devices or other magnetic material in or on the subjects body which will be hazardous for MR investigation (e.g. heart pace-maker, brain aneurysm clip, nerve stimulators, electrodes, penile implants, coloured contact lenses, patch to deliver medications through the skin, any metal implants as rods, joints, plates, pins, screws, nails or clips, embolization coil, or any metal fragments or shrapnel in the body), pregnancy, claustrophobia.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 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 |
| --- | --- |
| healthy volunteers<br>MR compliant volunteers with no history of cardiovascular diseases | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| cardiac volumes | volumes of cardiac chambers in the cardiac cycle [ml], sequence- and protocol dependent | up to 1 week | 
| cardiac performance | ejection fraction of cardiac chambers [%], sequence- and protocol dependent | up to 1 week | 
| cardiac muscle mass | systolic and end-diastolic mass of cardiac chambers [g], sequence- and protocol dependent | up to 1 week | 
| coronary artery anatomy | length and diameter [mm], sequence-, and protocol dependent | up to 1 week | 
| blood flow velocity | maximum, minimum and average velocity [cm/s], sequence-, and protocol dependent | up to 1 week | 
| blood flow vorticity | number of vortices of blood flow in the heart and surrounding great vessels, sequence and protocol dependent | up to 1 week | 
| blood flow timing | time points of characteristic blood flow patterns in the heart and surrounding great vessels in the cardiac cycle [ms], sequence-, and protocol dependent | up to 1 week | 
| magnetic relaxation times | systolic and diastolic T1, T2, T2* [ms], sequence- and protocol dependent | up to 1 week | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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no history of cardiovascular diseases