Radiofrequency-based Speckle Tracking Echocardiography to Evaluate Diastolic Function
Radiofrequency-based Speckle Tracking Echocardiography to Evaluate Diastolic Function
The purpose of this study is to evaluate a novel ultrasound system's ability to assess the
 relaxing properties of the heart compared to current techniques.
Inclusion Criteria:

 -  Patients scheduled to undergo a clinically indicated left heart cardiac
 catheterization will be recruited for the study.

 Exclusion Criteria:

 -  Suspected acute ST elevation myocardial infarction.

 -  Acute coronary syndrome with active ongoing chest pain

 -  Known or suspected acute aortic dissection

 -  Known or suspected cardiac tamponade

 -  Known history of unoperated constrictive pericarditis

 -  Known or suspected severe aortic stenosis or severe mitral regurgitation

 -  Heart rhythm other than sinus rhythm on pre-cath EKG

 -  Age < 18 years old

 -  Unable to provide informed consent