Fig. 6From: The feasibility of contrast enhanced ultrasonography (CEUS) in the diagnosis of non-cardiac thoracic disorders of dogs and catsSignal intensity in arbitrary units (a.u.) as a function of time in seconds of two representative cases included in the study. Grey line refers to a crossbreed dog with pneumonia while the black line refers to a crossbreed dog with pulmonary carcinoma. Note the delayed contrast agent arrival (expressed as arrival time [AT]) shown by the carcinoma in comparison to the pneumonia. PI, peak intensity (expressed in arbitrary units [a.u.]); Wi, wash-in slope (expressed in a.u./sec)Back to article page