Definition: Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
Input: Abstract: Today, echocardiography enjoys a prominent place in the physician's diagnostic armamentarium. Its safe application, accuracy, and reproducibility have made its widespread use popular. The ability of echocardiography to visualize cardiac valves, intracardiac masses, and ventricular wall motion is unique. This article highlights the applications of echocardiography from the physician's vantage point.
Output:
Diagnosis, Differential