Texture Analysis of 18 F-FDG PET/CT for Differential Diagnosis Spinal Metastases

Frontiers in Medicine

article

Xin Fan¹  Han Zhang¹  Yuzhen Yin²  Jiajia Zhang¹  Mengdie Yang¹  Shanshan Qin¹  Xiaoying Zhang¹  Fei Yu¹ 

[1] Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine;Shanghai Clinical College, Anhui Medical University

关键词: spinal metastases;    texture analysis;    PET/CT;    diagnosis;    machine learning;   

DOI  :  10.3389/fmed.2020.605746

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Purpose: To evaluate the value of texture analysis for the differential diagnosis of spinal metastases and to improve the diagnostic performance of 2-deoxy-2-[fluorine-18]fluoro-D-glucose positron emission tomography/computed tomography ( 18 F-FDG PET/CT) for spinal metastases. Methods: This retrospective analysis of patients who underwent PET/CT between December 2015 and January 2020 at Shanghai Tenth People's Hospital due to high FDG uptake lesions in the spine included 45 cases of spinal metastases and 44 cases of benign high FDG uptake lesions in the spine. The patients were randomly divided into a training group of 65 and a test group of 24. Seventy-two PET texture features were extracted from each lesion, and the Mann-Whitney U -test was used to screen the training set for texture parameters that differed between the two groups in the presence or absence of spinal metastases. Then, the diagnostic performance of the texture parameters was screened out by receiver operating characteristic (ROC) curve analysis. Texture parameters with higher area under the curve (AUC) values than maximum standardized uptake values (SUVmax) were selected to construct classification models using logistic regression, support vector machines, and decision trees. The probability output of the model with high classification accuracy in the training set was used to compare the diagnostic performance of the classification model and SUVmax using the ROC curve. For all patients with spinal metastases, survival analysis was performed using the Kaplan-Meier method and Cox regression. Results: There were 51 texture parameters that differed meaningfully between benign and malignant lesions, of which four had higher AUC than SUVmax. The texture parameters were input to build a classification model using logistic regression, support vector machine, and decision tree. The accuracy of classification was 87.5, 83.34, and 75%, respectively. The accuracy of the manual diagnosis was 84.27%. Single-factor survival analysis using the Kaplan-Meier method showed that intensity was correlated with patient survival. Conclusion: Partial texture features showed higher diagnostic value for spinal metastases than SUVmax. The machine learning part of the model combined with the texture parameters was more accurate than manual diagnosis. Therefore, texture analysis may be useful to assist in the diagnosis of spinal metastases.

【 授权许可】

CC BY