Fig. 1
From: Exocrine pancreatic function is preserved in systemic sclerosis
HRCT of the chest including the upper abdomen. The image shows from left to right a region of interest for measurement of the CT number (Hounsfield units) placed in the liver, pancreatic body and tail, and spleen respectively. The measurements of the spleen were used for normalization of attenuation (Hounsfield units) to compensate for variability between different CT machines