Figure 1From: Comparison of computerized tomography and ultrasound for diagnosing soft tissue abscesses Imaging of abscess cavity debris rating. The degree of visualized detail for both US and CT images was rated using a 4-point scale. A rating of 1 corresponded to visualized changes in the soft tissue but no organized fluid collection. A rating of 2 corresponded to visualization of a discrete abscess cavity but no internal details (i.e. a homogenous center). A rating of 3 corresponded with visualization of heterogeneous contents of the abscess cavity without fine detail, and a rating of 4 corresponded with visualized fine details within the abscess cavity.Back to article page