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Multiscale and multiperception feature learning for pancreatic lesion detection based on noncontrast CT.
Yan, Tian; Tang, Geye; Zhang, Haojie; Liang, Lidu; Ma, Jianhua; Gao, Yi; Zhou, Chenjie; Li, Shulong.
Afiliação
  • Yan T; School of Biomedical Engineering, Southern Medical University, Guangzhou, People's Republic of China.
  • Tang G; Guangdong Provincial Key Laboratory of Medical Image Processing, Guangdong Province Engineering Laboratory for Medical Imaging and Diagnostic Technology, Southern Medical University, Guangzhou, People's Republic of China.
  • Zhang H; General Surgery Center, Department of Hepatobiliary Surgery II, Guangdong Provincial Research Center for Artificial Organ and Tissue Engineering, Guangzhou Clinical Research and Transformation Center for Artificial Liver, Institute of Regenerative Medicine, Zhujiang Hospital, Southern Medical Univer
  • Liang L; School of Biomedical Engineering, Southern Medical University, Guangzhou, People's Republic of China.
  • Ma J; Guangdong Provincial Key Laboratory of Medical Image Processing, Guangdong Province Engineering Laboratory for Medical Imaging and Diagnostic Technology, Southern Medical University, Guangzhou, People's Republic of China.
  • Gao Y; Department of General Surgery, Seventh People's Hospital of Nanhai District, Foshan, People's Republic of China.
  • Zhou C; Equipment and Materials Department, Xinchang Hospital of Traditional Chinese Medicine, Zhejiang, People's Republic of China.
  • Li S; School of Biomedical Engineering, Southern Medical University, Guangzhou, People's Republic of China.
Phys Med Biol ; 69(10)2024 May 01.
Article em En | MEDLINE | ID: mdl-38588676
ABSTRACT
Background. Pancreatic cancer is one of the most malignant tumours, demonstrating a poor prognosis and nearly identically high mortality and morbidity, mainly because of the difficulty of early diagnosis and timely treatment for localized stages.Objective. To develop a noncontrast CT (NCCT)-based pancreatic lesion detection model that could serve as an intelligent tool for diagnosing pancreatic cancer early, overcoming the challenges associated with low contrast intensities and complex anatomical structures present in NCCT images.Approach.We design a multiscale and multiperception (MSMP) feature learning network with ResNet50 coupled with a feature pyramid network as the backbone for strengthening feature expressions. We added multiscale atrous convolutions to expand different receptive fields, contextual attention to perceive contextual information, and channel and spatial attention to focus on important channels and spatial regions, respectively. The MSMP network then acts as a feature extractor for proposing an NCCT-based pancreatic lesion detection model with image patches covering the pancreas as its input; Faster R-CNN is employed as the detection method for accurately detecting pancreatic lesions.Main results. By using the new MSMP network as a feature extractor, our model outperforms the conventional object detection algorithms in terms of the recall (75.40% and 90.95%), precision (40.84% and 68.21%), F1 score (52.98% and 77.96%), F2 score (64.48% and 85.26%) and Ap50 metrics (53.53% and 70.14%) at the image and patient levels, respectively.Significance.The good performance of our new model implies that MSMP can mine NCCT imaging features for detecting pancreatic lesions from complex backgrounds well. The proposed detection model is expected to be further developed as an intelligent method for the early detection of pancreatic cancer.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Neoplasias Pancreáticas / Tomografia Computadorizada por Raios X Limite: Humans Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Neoplasias Pancreáticas / Tomografia Computadorizada por Raios X Limite: Humans Idioma: En Ano de publicação: 2024 Tipo de documento: Article