What describes a Star Artifact in nuclear imaging?

A Star Artifact in nuclear imaging is characterized by a bright central point with radiating lines. This phenomenon usually occurs in images due to issues related to scattering, detector response, or problems with the imaging system itself. The central bright spot often represents the location of a high-intensity source, such as a radionuclide, while the radiating lines are a result of the non-uniform response of the imaging system or the processing algorithms used to create the final image.

Understanding the appearance of this artifact is crucial for interpreting nuclear medicine images accurately, as it can mimic or obscure real anatomical structures or functional activity. Recognizing the distinct pattern of the star artifact enables professionals to distinguish it from genuine findings, thus preventing potential misdiagnosis.

The other options describe different types of artifacts or image characteristics that do not specifically represent the star artifact in nuclear imaging.