Machine learning to identify lymph node metastasis from thyroid cancer in patients undergoing contrast-enhanced CT studies.
We compared the diagnostic performance of morphological methods such as the major axis, the minor axis, the volume and sphericity and of machine learning with texture analysis in the identification of lymph node metastasis in patients with thyroid cancer who had undergone contrast-enhanced CT studie...
| Publicado en: | Radiography Vol. 27; no. 3; pp. 920 - 927 |
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| Autores principales: | , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
W B Saunders
Aug2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=151431317&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 151431317 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10788174 DPD jtl: Radiography issn: 10788174 maglogo: N pubinfo: dt: Aug2021 vid: 27 iid: 3 pid: 1351 pub: W B Saunders place: Philadelphia, Pennsylvania artinfo: ui: 151431317 151431317 151431317 10.1016/j.radi.2021.03.001 151431317 ppf: 920 ppct: 7 formats: tig: atl: Machine learning to identify lymph node metastasis from thyroid cancer in patients undergoing contrast-enhanced CT studies. aug: au: Masuda, T. Nakaura, T. Funama, Y. Sugino, K. Sato, T. Yoshiura, T. Baba, Y. Awai, K. affil: Department of Radiological Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima 730-8655, Japan sug: subj: Machine Learning Lymph Nodes Pathology Neoplasm Metastasis Diagnosis Thyroid Neoplasms Contrast Media Administration and Dosage Tomography, X-Ray Computed Human Logistic Regression Univariate Statistics Descriptive Statistics Cancer Patients ab: We compared the diagnostic performance of morphological methods such as the major axis, the minor axis, the volume and sphericity and of machine learning with texture analysis in the identification of lymph node metastasis in patients with thyroid cancer who had undergone contrast-enhanced CT studies. We sampled 772 lymph nodes with histology defined tissue types (84 metastatic and 688 benign lymph nodes) that were visualised on CT images of 117 patients. A support vector machine (SVM), free programming software (Python), and the scikit-learn machine learning library were used to discriminate metastatic-from benign lymph nodes. We assessed 96 texture and 4 morphological features (major axis, minor axis, volume, sphericity) that were reported useful for the differentiation between metastatic and benign lymph nodes on CT images. The area under the curve (AUC) obtained by receiver operating characteristic analysis of univariate logistic regression and SVM classifiers were calculated for the training and testing datasets. The AUC for all classifiers in training and testing datasets was 0.96 and 0.86, at the SVM for machine learning. When we applied conventional methods to the training and testing datasets, the AUCs were 0.63 and 0.48 for the major axis, 0.70 and 0.44 for the minor axis, 0.66 and 0.43 for the volume, and 0.69 and 0.54 for sphericity, respectively. The SVM using texture features yielded significantly higher AUCs than univariate logistic regression models using morphological features (p = 0.001). For the identification of metastatic lymph nodes from thyroid cancer on contrast-enhanced CT images, machine learning combined with texture analysis was superior to conventional diagnostic methods with the morphological parameters. Our findings suggest that in patients with thyroid cancer and suspected lymph node metastasis who undergo contrast-enhanced CT studies, machine learning using texture analysis is high diagnostic value for the identification of metastatic lymph nodes. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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