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.
An angiogram is an X-ray image of the blood vessels. Itâs also called an arteriogram. Itâs done to look at blood vessels that have problems. A pulmonary angiogram is an angiogram of the blood vessels of the lungs. The procedure is done with a special contrast dye injected into the bodyâs blood vessels. This is done in the groin or arm. The dye shows up on X-rays.