The non-overlapping tiling approach on second stage candidate region C2. Note that the grid shows the output tiles of size 44 × 44 × 28 (x, y, z-directions). Each predicted tile is a larger input of 132 × 132 × 116 that the network processes .Our test set is different from our training and validation data. Itoriginates from a different hospital, scanners, and research study withgastric cancer patients. 150 abdominal CT scans were acquired in theportal venous phase. Each CT volume consists of 263–1061 slices of512 × 512 pixels. Voxel dimensions are [0.55–0.82, 0.55–0.82,0.4–0.80] mm. The pancreas, liver, and spleen were semi-automaticallydelineated by three trained researchers and confirmed by a clinician.Fig. 8 shows surface renderings for comparison of the different stages ofthe algorithm. A typical testing case in the first and second stages isshown using non-overlapping and overlapping tiles. Dice similarityscores are listed in Table 2.