The main advantage of ECG compared to echo is that it's represent the functionality of the heart and overall CVD rather than structure like echo.
CT scan is not for screening and risk prediction, it's normally recommended after discovery of CVD related symptoms.
Having said that even CT cannot detect some of CVDs since it mainly cover the vascular part of the CVD not cardio engine (heart).
ECG is the only one technique that cover comprehensive CVDs screening and it's non-invasive.
The main advantage of ECG compared to echo is that it's represent the functionality of the heart and overall CVD rather than structure like echo.
CT scan is not for screening and risk prediction, it's normally recommended after discovery of CVD related symptoms.
Having said that even CT cannot detect some of CVDs since it mainly cover the vascular part of the CVD not cardio engine (heart).
ECG is the only one technique that cover comprehensive CVDs screening and it's non-invasive.