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Retrospective Study
Copyright: ©Author(s) 2026.
World J Gastrointest Oncol. Sep 15, 2026; 18(9): 119889
Published online Sep 15, 2026. doi: 10.4251/wjgo.119889
Figure 3
Figure 3 High/Low-frequency energy ratio distributions of endoscopic ultrasound images derived from the two centers. Center A represents the training data from the Beijing Friendship Hospital, and Center B represents the external validation data from the Beijing Tiantan Hospital. The subscript 0 indicates the cancerous category (Center A_0, Center B_0), while the subscript 1 indicates the noncancerous category (Center A_1, Center B_1).


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