MRI-based nomogram predicts Ki-67 index in nasopharyngeal carcinoma
Author Information
Author(s): Wang Yao, Zhang Jing, Li Qiyuan, Sun Li, Zheng Yingmei, Gao Chuanping, Dong Cheng
Primary Institution: Affiliated Hospital of Qingdao University, Qingdao, China
Hypothesis
Can an MRI-based radiomics nomogram effectively predict the Ki-67 index in nasopharyngeal carcinoma patients?
Conclusion
The MRI-based radiomics nomogram effectively predicts the pre-surgical expression level of Ki-67 in nasopharyngeal carcinoma patients.
Supporting Evidence
- The radiomics nomogram showed an AUC of 0.841 in the test set.
- Decision curve analysis indicated that the nomogram outperformed a clinical model.
- Five radiomics features were identified as significant predictors of Ki-67 index.
Takeaway
Doctors can use MRI scans to help guess how aggressive a nasopharyngeal cancer is by looking at a special score called the Ki-67 index, which tells them how fast the cancer cells are growing.
Methodology
The study involved 133 patients with nasopharyngeal carcinoma who underwent MRI, with data split into training and test sets to develop and validate a radiomics nomogram using logistic regression.
Potential Biases
Manual segmentation of MRI images may introduce bias.
Limitations
The study had a relatively small sample size and potential selection bias due to its retrospective nature.
Participant Demographics
The study included 133 patients, with 74 men and 31 women in the training set, and 18 men and 10 women in the test set.
Statistical Information
P-Value
p = 0.035 for lymphatic necrosis, p = 0.048 for lymphatic spread
Confidence Interval
95% CI: 0.654 – 0.951
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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