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 is a special X-ray test. Itâs. done to find out if your coronary arteries are blocked. or narrowed, where and by how much. An angiogram. can help your doctor see if you need treatment such as. angioplasty or stent, coronary artery bypass surgery. (CABG) or medical therapy.