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Jiao W, Song S, Han H, Wang W, Zhang Q. Artificially intelligent differential diagnosis of enlarged lymph nodes with random vector functional link network plus. Med Eng Phys 2023; 111:103939. [PMID: 36792248 DOI: 10.1016/j.medengphy.2022.103939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 11/10/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
Differential diagnosis of enlarged lymph nodes (ELNs) is essential for the treatment of related patients. Though multi-modal ultrasound including B-mode, Doppler ultrasound, elastography and contrast-enhanced ultrasound (CEUS) can enhance diagnostic performance for ELNs, the scenario of having only single or dual modal data is often encountered. In this study, an artificially intelligent diagnosis model based on the learning using privileged information was proposed to aid in differential diagnosis of ELNs in the case of single or dual modal images. In our model, B-mode, or combined with another modality, was used as the standard information (SI) and other modalities were used as the privileged information (PI). The model was constructed through the combination of the SI and PI in the training stage. By learning from the training samples, a random vector functional link network with privileged information (RVFL+) was obtained, which was used to classify the testing samples of solely the SI. Results showed that the accuracy, precision and Youden's index of the RVFL+ model, using B-mode with elastography as the SI and CEUS as the PI, reached 78.4%, 92.4% and 54.9%, increased by 14.0%, 8.4% and 24.5% compared with the model using B-mode as the SI without the PI. The method based on the LUPI can improve the diagnostic performance for ELNs.
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Affiliation(s)
- Weiwei Jiao
- The SMART (Smart Medicine and AI-based Radiology Technology) Lab, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China; School of Communication and Information Engineering, Shanghai University, Shanghai, China
| | - Shuang Song
- The SMART (Smart Medicine and AI-based Radiology Technology) Lab, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China; School of Communication and Information Engineering, Shanghai University, Shanghai, China
| | - Hong Han
- Department of Ultrasound, Zhongshan Hospital Fudan University, 200032, Shanghai, China; Shanghai Institute of Medical Imaging, 200032, Shanghai, China.
| | - Wenping Wang
- Department of Ultrasound, Zhongshan Hospital Fudan University, 200032, Shanghai, China; Shanghai Institute of Medical Imaging, 200032, Shanghai, China.
| | - Qi Zhang
- The SMART (Smart Medicine and AI-based Radiology Technology) Lab, Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China; School of Communication and Information Engineering, Shanghai University, Shanghai, China.
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Zhang Q, Xiong J, Cai Y, Shi J, Xu S, Zhang B. Multimodal feature learning and fusion on B-mode ultrasonography and sonoelastography using point-wise gated deep networks for prostate cancer diagnosis. ACTA ACUST UNITED AC 2020; 65:87-98. [PMID: 31743102 DOI: 10.1515/bmt-2018-0136] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 04/09/2019] [Indexed: 12/16/2022]
Abstract
B-mode ultrasonography and sonoelastography are used in the clinical diagnosis of prostate cancer (PCa). A combination of the two ultrasound (US) modalities using computer aid may be helpful for improving the diagnostic performance. A technique for computer-aided diagnosis (CAD) of PCa is presented based on multimodal US. Firstly, quantitative features are extracted from both B-mode US images and sonoelastograms, including intensity statistics, regional percentile features, gray-level co-occurrence matrix (GLCM) texture features and binary texture features. Secondly, a deep network named PGBM-RBM2 is proposed to learn and fuse multimodal features, which is composed of the point-wise gated Boltzmann machine (PGBM) and two layers of the restricted Boltzmann machines (RBMs). Finally, the support vector machine (SVM) is used for prostatic disease classification. Experimental evaluation was conducted on 313 multimodal US images of the prostate from 103 patients with prostatic diseases (47 malignant and 56 benign). Under five-fold cross-validation, the classification sensitivity, specificity, accuracy, Youden's index and area under the receiver operating characteristic (ROC) curve with the PGBM-RBM2 were 87.0%, 88.8%, 87.9%, 75.8% and 0.851, respectively. The results demonstrate that multimodal feature learning and fusion using the PGBM-RBM2 can assist in the diagnosis of PCa. This deep network is expected to be useful in the clinical diagnosis of PCa.
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Affiliation(s)
- Qi Zhang
- Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Xiangying Building, No. 333 Nanchen Road, Shanghai 200444, China.,Hangzhou YITU Healthcare Technology, Hangzhou 310000, China
| | - Jingyu Xiong
- Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Xiangying Building, No. 333 Nanchen Road, Shanghai 200444, China.,The SMART (Smart Medicine and AI-based Radiology Technology) Lab, Institute of Biomedical Engineering, School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China
| | - Yehua Cai
- Department of Ultrasound, Huashan Hospital, Fudan University, Shanghai 200438, China
| | - Jun Shi
- Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Xiangying Building, No. 333 Nanchen Road, Shanghai 200444, China
| | - Shugong Xu
- Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Xiangying Building, No. 333 Nanchen Road, Shanghai 200444, China
| | - Bo Zhang
- Department of Ultrasound in Medicine, Shanghai East Hospital, Tongji University School of Medicine, No. 150 Jimo Road, Shanghai 200120, China
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