About this trial
The study will compare standard ultrasound images to high frame rate ultrasound images in patients with heart disease or with a low risk of heart disease to see if a higher frame rate of ultrasound adds to the information obtained from standard ultrasound.
Eligibility criteria
Qualifiers
Ability to give informed consent
age ≥18years and
confirmed inducible wall motion / perfusion abnormality on previous stress echocardiogram
known coronary artery disease - defined by presence of flow-limiting coronary stenosis(>70% diameter stenosis) on coronary angiography.
Disqualifiers
Inability to undertake pharmacological stress, ie previously known intolerance to dipyridamole;
Moderate or Severe aortic or mitral regurgitation or severe mitral stenosis;
Significant pulmonary disease like severe COPD or pulmonary fibrosis;
Atrial fibrillation;
Trial design
Treatments tested in this trial
- Standard echocardiography
- High frame rate echocardiography