Contrast
131contrast color — an illusory tinge of complementary hue or brightness induced by a vivid hue or luminance on the area surrounding it in the visual field …
132contrast echocardiography — echocardiography in which the ultrasonic beam detects tiny intravascular bubbles produced by intravascular injection of a liquid, such as the patient s blood, saline, or dextrose in water, or of small amounts of carbon dioxide gas; bubble… …
