The investigators will check the feasibility of an intraprocedural vitality diagnostics and the identification of an indication for Percutaneous transluminal coronary angioplasty (PTCA).
After myocard vitality diagnostics with MRI patients will underwent additionally an stress echocardiography within the exploration. By this ultrasound we will measure the LV mass and the ejection fraction per apical 2-, 3- and 4-chamber view. In addition a 2D-strain-analysis will be done to measure the systolic and diastolic strain and also the circumferential and radial strain rate parameter (by depicting three parasternal short axis views in the basal, mid-ventricular and apical plane). These measurements will be compared with the studies-conditioned MRI-finding (as reference) to find the optimal strain-parameter and the optimal cut-off-data for an intraprocedural vitality diagnostics of the single layers (endocardial, myocardial, and epicardial) for this patient group. The data upraised through this are compared off-line to the MRI findings.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
2D-strain-analysis with elevation of the radial and circumferential strain and strain rate parameter(systolic and diastolic)occurs through the echocardiography. Comparison of the echocardiography and the MRI-vitality data, calculation of a cut out of vision value of a vitality diagnosis with the help of 2D-strain-analysis.
University Hospital Aachen
Aachen, Germany
Cut-Off-Value of vital myocardial tissue
It will be determine cutt-off-value of vital myocardial tissue in comparison to MRI myocardial vitality findings.
Time frame: time during hospitalization
feasibility and safety of echocardiography during catheter investigations
it will be analyzed if it is logistically possible to perform echo-test during the actual catheter investigations (feasibility) and if the patient will be exposed to any safety risk for logistic or sterility reasons.
Time frame: time during hospitalization and 1 months afterwards
Determination of Strain-Parameter for identification of vital myocardial tissue
It will be determitated optimal Strain-Parameter(circumferential, systolic or diastolic)for identification of vital myocardial tissue
Time frame: time during hospitalization
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