Double density sign (osteoid osteoma)
The double density sign, also sometimes clumsily referred to as the hotter spot within hot area sign, is a bone scan sign of an osteoid osteoma.
It refers to a central focus of intense uptake (the nidus) within a surrounding lower, but nonetheless increased uptake, rim.
See also
Siehe auch:
Assoziationen und Differentialdiagnosen zu double density sign of osteoid osteomas: