Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Zhiguo Gui"'
Publikováno v:
Mathematical Biosciences and Engineering, Vol 20, Iss 2, Pp 2831-2846 (2023)
Low-dose computed tomography (LDCT) can effectively reduce radiation exposure in patients. However, with such dose reductions, large increases in speckled noise and streak artifacts occur, resulting in seriously degraded reconstructed images. The non
Externí odkaz:
https://doaj.org/article/238b0ba28d694841b518f617be2f1c0f
Autor:
Zefang HAN, Hong SHANGGUAN, Xiong ZHANG, Xinglong HAN, Zhiguo GUI, Xueying CUI, Pengcheng ZHANG
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 31, Iss 1, Pp 117-134 (2022)
Computed tomography (CT) is widely used in clinical diagnosis because of its fast imaging speed and high resolution. However, higher doses of radiation will cause damages to human tissues and organs, while lower doses will lead to serious deteriorati
Externí odkaz:
https://doaj.org/article/5bfb5c22968d493ea638c6f857c20160
Publikováno v:
IEEE Access, Vol 10, Pp 50114-50124 (2022)
Low-dose CT images contain severe mottle noise and streak artifacts, which seriously affect the physician’s diagnosis of the disease. Hence, in this paper, we propose a novel anisotropic fourth-order diffusion model for low-dose CT image processing
Externí odkaz:
https://doaj.org/article/90418d49546647d58e14b2fc7b31e61d
Autor:
Libo Yang, Hairong Kou, Xiaoli Wang, Xiaoyong Zhang, Zhenzhen Shang, Junbing Shi, Guanghua Zhang, Zhiguo Gui
Publikováno v:
Micromachines, Vol 14, Iss 3, p 635 (2023)
A passive substrate integrated waveguide (SIW) sensor based on the complementary split ring resonator (CSRR) is presented for pressure detection in high-temperature environments. The sensor pressure sensing mechanism is described through circuit anal
Externí odkaz:
https://doaj.org/article/35022280895d4683913d68242cf09014
Autor:
Fengyuan Jiao, Zhiguo Gui, Kunpeng Li, Hong Shangguang, Yanling Wang, Yi Liu, Pengcheng Zhang
Publikováno v:
IEEE Access, Vol 9, Pp 71091-71103 (2021)
Convolutional neural network (CNN)-based deep learning techniques have enjoyed many successful applications in the field of medical imaging. However, the complicated between-manifold projection from the projection domain to the spatial domain hinders
Externí odkaz:
https://doaj.org/article/4445d5d6b1ae4618a0c3a8ef28587322
Publikováno v:
IEEE Access, Vol 8, Pp 31882-31891 (2020)
Near-infrared diffuse correlation tomography (DCT) is an emerging technology for non-invasive imaging of the tissue blood flow. The flow imaging quality relies on the image reconstruction algorithm, which, however, is little studied thus far. In this
Externí odkaz:
https://doaj.org/article/7c19f475086b498c83cc6a88805c3f08
Publikováno v:
IEEE Access, Vol 8, Pp 15945-15951 (2020)
Diffuse correlation spectroscopy (DCS) is an emerging technology to monitor the blood flow at microvasculature level, wherein the flow model is dependent on the movements of red blood cells (RBCs). To elucidate the mechanism of flow model, in this pa
Externí odkaz:
https://doaj.org/article/ba923df72baf47af8a88d5048c9afddf
Publikováno v:
IEEE Access, Vol 8, Pp 136819-136827 (2020)
Near-infrared diffuse correlation imaging (DCT) is an important method of tissue blood flow imaging for the prognosis and diagnosis of various diseases. A new solution of DCT that is based on the Nth-order linear (NL) algorithm, termed as NL-DCT, was
Externí odkaz:
https://doaj.org/article/53f1f0c858a04835b9471d6e771b6f77
Publikováno v:
IEEE Access, Vol 7, Pp 31123-31139 (2019)
In intensity-modulated radiation therapy (IMRT), a network flow is adopted to solve the pricing problem of the generic column generation approach in order to obtain a deliverable aperture. However, excessive computation results from the direct use of
Externí odkaz:
https://doaj.org/article/0a303a73662c4539ba9fc9ef83d8a425
Publikováno v:
IEEE Access, Vol 7, Pp 157623-157632 (2019)
Direct aperture optimization (DAO) is an effective method to generate high-quality intensity-modulated radiation therapy treatment plans. In generic DAO, the direction of negative gradient descent is generally used to determine the aperture shape. Ho
Externí odkaz:
https://doaj.org/article/850e3d6b4bf14d5885b9dfa90fccb306