Zobrazeno 1 - 10
of 1 790
pro vyhledávání: '"spectral CT"'
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 6, Pp 669-675 (2024)
Objective: This study aimed to investigate the application value of virtual monoenergetic (VMI) (≤70 keV) computed tomography angiography (CTA) in imaging small cerebral vessels with dual-layer detector spectral CT. Methods: The imaging data of 52
Externí odkaz:
https://doaj.org/article/3c8b82d08ff1429aaa07bab25ec6df89
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 6, Pp 717-724 (2024)
Objective: In this study, we aimed to compare the accuracies and efficiencies of dual-layer spectral computed tomography (CT), quantitative CT (QCT), and dual-energy X-ray absorptiometry (DXA) in diagnosing osteoporosis. Methods: From January to Octo
Externí odkaz:
https://doaj.org/article/4cfa6d64cffa47468ca5bbda2890dac1
Autor:
Jiacheng HU, Yunfu LIU, Xinyan WANG, Qian WANG, Zixuan MA, Yongxian ZHANG, Wei LI, Rong LIU, Yantao NIU
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 6, Pp 692-700 (2024)
Objective: This study aimed to investigate the application value of fractional bolus injection of a contrast agent combined with double-layer detector spectral CT 50 keV virtual monoenergetic imaging (VMI) in combined imaging of computed tomography u
Externí odkaz:
https://doaj.org/article/5fbf2d5445c6454f988efc8e0f40e026
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 6, Pp 677-682 (2024)
Objective: This study aimed to explore the value of monoenergetic imaging using dual-layer spectral detector computed tomography (CT) for dacryocystography. Methods: Dacryocystography was performed in patients with clinically suspected lacrimal duct
Externí odkaz:
https://doaj.org/article/7314e9689408419a860a8714b7aa5cf2
Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 6, Pp 709-716 (2024)
Objective: This study aimed to explore the feasibility of applying dual-layer detector spectral computed tomography (DLCT) virtual non-contrast (VNC) technology in pediatric enhanced chest CT examinations. Methods: Retrospective analysis was conducte
Externí odkaz:
https://doaj.org/article/c07661235a764b178b3e0edb3fe122ae
Autor:
ZHANG Tianyi, YAN Fuhua
Publikováno v:
Zhenduanxue lilun yu shijian, Vol 23, Iss 04, Pp 452-456 (2024)
Computed tomography (CT) is one of the most commonly used examination methods in clinical practice, but its resolution for soft-tissue is not high enough, making it difficult to detect and identify some lesions, and it is insufficient in quantitative
Externí odkaz:
https://doaj.org/article/a76be80361ad4b86829f11317eb9791a
Autor:
S. Rahn, S. Skornitzke, C. Melzig, T. Reiner, W. Stiller, C. P. Heussel, H. U. Kauczor, T. F. Weber, T. D. Do
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract This study aimed to evaluate the impact of contrast media application on CT attenuation of the bone using a novel calcium-only imaging technique (VCa) from dual-layer spectral detector CT (DLCT), which enables CT-based bone mineral density m
Externí odkaz:
https://doaj.org/article/6a364e3dba47443995118ae33f204b9e
Autor:
Juna Musa, MD, MSc, Ahmad Parvinian, MD, Nathan Huber, PhD, Andrea Ferrero, PhD, Christopher Favazza, PhD, Anil Kurup, MD, Thomas Atwell, MD
Publikováno v:
Radiology Case Reports, Vol 19, Iss 8, Pp 3517-3521 (2024)
Dual-energy or spectral computed tomography (CT) information may be obtained by either sending X-ray beams of different energy spectra through the patient or by discriminating the energy of the X-rays that reach the detector. The spectral signal is t
Externí odkaz:
https://doaj.org/article/f563713d37b94319b442782b5e4b10ea
Autor:
Qizhen Zhu, Shuoyang Wei, Zhiqun Wang, Haoran Xu, Bing Zhou, Huiying Qu, Mingming Nie, Ning Guo, Wenshuai Wang, Bo Yang, Jie Qiu
Publikováno v:
Radiation Oncology, Vol 19, Iss 1, Pp 1-9 (2024)
Abstract Background Conventional single-energy CT can only provide a raw estimation of electron density (ED) for dose calculation by developing a calibration curve that simply maps the HU values to ED values through their correlations. Spectral CT, a
Externí odkaz:
https://doaj.org/article/905d5cff4c3749a2b7649b2623f9b494
Autor:
Hua Zhong, Qianwen Huang, Xiaoli Zheng, Yong Wang, Yanan Qian, Xingbiao Chen, Jinan Wang, Shaoyin Duan
Publikováno v:
BMC Medical Imaging, Vol 24, Iss 1, Pp 1-14 (2024)
Abstract Background Abdominal CT scans are vital for diagnosing abdominal diseases but have limitations in tissue analysis and soft tissue detection. Dual-energy CT (DECT) can improve these issues by offering low keV virtual monoenergetic images (VMI
Externí odkaz:
https://doaj.org/article/6ea39367b59347cc94c1518667abccde