Outcome predictors of odontogenic abscesses in the elderly.

Odontogenic infections have a high prevalence and can lead to severe complications. Due to demographic changes, the number of geriatric patients has increased in recent years. The aim of this study was to analyse odontogenic abscesses in elderly patients and to differentiate them from non-elderly patients regarding clinical presentation, bacterial analysis and therapy.

Parametric response mapping of contrast-enhanced biphasic CT for evaluating tumour viability of hepatocellular carcinoma after TACE.

Objectives: To determine the feasibility and role of parametric response mapping (PRM) for quantitative assessment of regional contrast-enhancement patterns in hepatocellular carcinoma (HCC).

Methods: Biphasic CT of 19 patients receiving repetitive conventional transarterial chemoembolisation (cTACE) for intermediate stage HCC were retrospectively analysed at baseline and follow-up at 3, 6, and 9 months. Voxel-based registration of arterial and porto-venous phases, with segmentation of the largest target lesion was performed.