Conditions like fluid imbalance or local swelling that lead to puffy or swollen eyelids can cause shadows that make the area under the eyes appear darker. Trauma (a black eye) can cause darkening of the entire eye area. Some people notice that dark circles under the eyes tend to run in families, as well. In most cases, dark circles under the eyes are not a sign of a serious medical condition.
A full-body scanner is a device that detects objects on a person's body for security screening purposes, without physically removing clothes or making physical contact. full-body scanner is a device that detects objects on a person's body for security screening purposes, without physically removing clothes or making physical contact.
Positron Emission Tomography-Computed Tomography (PET/CT). Positron emission tomography (PET) uses small amounts of radioactive materials called radiotracers, a special camera and a computer to help evaluate your organ and tissue functions.By identifying body changes at the cellular level, PET may detect the early onset of disease before it is evident on other imaging tests.ET and PET/CT scans are performed to: 1  detect cancer. 2  determine whether a cancer has spread in the body. 3  assess the effectiveness of a treatment plan, such as cancer therapy. 4  determine if a cancer has returned after treatment.