In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection. Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation.
Computed Tomography Angiogram (CT Angiogram). Guide. A computed tomography angiogram (CT angiogram) is a test that uses X-rays to provide detailed pictures of the heart and the blood vessels that go to the heart, lung, brain, kidneys, head, neck, legs, and arms.
A coronary angiogram, which can help diagnose heart conditions, is the most common type of heart catheterization procedure. During a coronary angiogram, a type of dye that's visible by an X-ray machine is injected into the blood vessels of your heart.oronary angiograms are part of a general group of procedures known as heart (cardiac) catheterization. Heart catheterization procedures can both diagnose and treat heart and blood vessel conditions.