The "golden standard" for checking the condition of a person's coronary arteries is a heart catheterisation. (angiogram) With this procedure, a catheter is guided from the groin or wrist to the coronary arteries and with the use of a contrast agent the arteries are made visible under X-ray radiation imaging.
An echo does not provide information about the condition of coronary arteries.
There are no medicines that can open heart arteries. There are medicines that can slow or stop the process of deterioration of the arteries.