Abstract
Purpose
To assess the value of orthogonal axial images (OAI) of MRI in gastric cancer T staging.
Methods
This retrospective study enrolled 133 patients (median age, 63 [range, 24–85] years) with gastric adenocarcinoma who underwent both CT and MRI followed by surgery. MRI lacking or incorporating OAI and CT images were evaluated, respectively. Diagnostic performance (accuracy, sensitivity, and specificity) for each T stage, overall diagnostic accuracy and rates of over- and understaging were quantified employing pathological T stage as a reference standard. The McNemar’s test was performed to compare the overall accuracy.
Results
Among patients with pT1–pT4 disease, MRI with OAI (accuracy: 88.7–94.7%, sensitivity: 66.7–93.0%, specificity: 91.5–100.0%) exhibited superior diagnostic performance compared to MRI without OAI (accuracy: 81.2–88.7%, sensitivity: 46.2–83.1%, specificity: 85.5–99.1%) and CT (accuracy: 88.0–92.5%, sensitivity: 53.3–90.1%, specificity: 88.7–98.1%). The overall accuracy of MRI with OAI was significantly higher (83.5%) than that of MRI without OAI (67.7%) (p < .001). However, there was no significant difference in the overall accuracy of MRI with OAI and CT (78.9%) (p = .35). The over- and understaging rates of MRI with OAI (12.0, 4.5%) were lower than those of MRI without OAI (21.8, 10.5%) and CT (12.8, 8.3%).
Conclusion
OAI play a pivotal role in the T staging of gastric cancer. MRI incorporating OAI demonstrated commendable performance for gastric cancer T-staging, with a slight tendency toward its superiority over CT.
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All data are available upon request.
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Acknowledgements
We great thank Miao LIN for her time and valuable contributions to the study.
Funding
This study was funded by Guangdong Province Basic and Applied Basic Research Foundation (2020A1515010796), Shen-** YU.
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QML drafted and revised the manuscript; analyzed data; collected imaging data. YC analyzed data and interpreted imaging data; revised the manuscript and enhanced the intellectual content of the manuscript. WJF, XHW, ZWZ, BLL, YRM and YYL collected clinical and pathological data. YZW revised the manuscript. SPY obtained funding to support the study; revised the manuscript; made contributions to the design of the work. WZQ responsible for the designing of the study; analyzed and interpreted imaging data; acquired imaging data. All authors read and approved the final manuscript.
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Yun-zhu WU is a staff member of Siemens Healthineers. The other authors have no competing interests to declare that they are relevant to the content of this article.
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Liu, Qm., Chen, Y., Fan, Wj. et al. Value of orthogonal axial MR images in preoperative T staging of gastric cancer. Abdom Radiol (2024). https://doi.org/10.1007/s00261-024-04322-8
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DOI: https://doi.org/10.1007/s00261-024-04322-8