Table 3 Diagnostic criteria for an abscess in CT and MRI
From: MRI of acute neck infections: evidence summary and pictorial review
CT | MRI |
|---|---|
Mass effect | T2 iso- or hyperintense collection |
Central hypodensity | Surrounding soft tissue enhancement |
Rim enhancement | No enhancement in collection |
Bulging | Low ADC consistent with restricted diffusion |
Surrounding edema | Â |
Presence of air | Â |