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Fig. 2 | BMC Medical Imaging

Fig. 2

From: Power of computed-tomography-defined sarcopenia for prediction of morbidity after pancreaticoduodenectomy

Fig. 2

Software tool for quantification of Visceral and Subcutaneous Adipose Tissue areas. Axial CT slice at the level L3-L4 (right). ROIs are assigned as “A” for total abdominal tissue (ATAT), “B” for visceral adipose compartment (AVAT), “C” for M. psoas (AMPSO) and “D” for the paraspinal muscle compartments (AMSPI). Based on the histogram (left), voxel count can be adjusted by selection of lower and upper density limits, on this screenshot specific for adipose tissue (−190 to −30 Hounsfield Units); named tissue 1 (T1) and depicted as blue range in the histogram. The corresponding adipose tissue pixels are colored blue and resulting AVAT is given in the table on the lower left. Note that intial values for the selected voxel volumes are corrected for slice thickness: e.g. for ROI A 45.63 cm3/ 1 mm slice thickness = 45.63 cm3/0.1 cm = 456.3 cm2

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