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. 2022 Mar 9;12:844390. doi: 10.3389/fonc.2022.844390

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Copyright © 2022 Zhang, Yao, Zhang, Huang, Wang and Huang

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Double contrast-enhanced ultrasonography performance to diagnose T1 (A), T2 (B), T3 (C), and T4 (D) gastric cancer. Likelihood ratio (LR) scattergram defining the quadrants of informativeness based on desirable thresholds (positive LR > 10, negative LR < 0.1): left upper quadrant (test suitable both for diagnosis exclusion and confirmation), right upper quadrant (confirmation only), left lower quadrant (exclusion only), and right lower quadrant (neither confirmation nor exclusion).