Zobrazeno 1 - 10
of 11 400
pro vyhledávání: '"spectral CT"'
Autor:
Unthan, Mark1 (AUTHOR) mark.unthan@med.uni-jena.de, Ullrich, Bernhard W.2 (AUTHOR), Heinen, Camilla1 (AUTHOR), Kohler, Felix C.1 (AUTHOR), Schenk, Philipp3 (AUTHOR), Franiel, Tobias4 (AUTHOR), Bürckenmeyer, Florian4 (AUTHOR)
Publikováno v:
Journal of Clinical Medicine. Sep2024, Vol. 13 Issue 18, p5446. 8p.
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:
Kumrular, Raziye Kubra1 (AUTHOR) r.k.kumrular@soton.ac.uk, Blumensath, Thomas1 (AUTHOR)
Publikováno v:
Sensors (14248220). Oct2024, Vol. 24 Issue 20, p6654. 18p.
In spectral CT reconstruction, the basis materials decomposition involves solving a large-scale nonlinear system of integral equations, which is highly ill-posed mathematically. This paper proposes a model that parameterizes the attenuation coefficie
Externí odkaz:
http://arxiv.org/abs/2404.06991
Autor:
Zhu, Qizhen1 (AUTHOR), Wei, Shuoyang1 (AUTHOR), Wang, Zhiqun1 (AUTHOR), Xu, Haoran1 (AUTHOR), Zhou, Bing1 (AUTHOR), Qu, Huiying1 (AUTHOR), Nie, Mingming2 (AUTHOR), Guo, Ning2 (AUTHOR), Wang, Wenshuai2 (AUTHOR), Yang, Bo1 (AUTHOR) yb1632@163.com, Qiu, Jie1 (AUTHOR) qiujie@pumch.cn
Publikováno v:
Radiation Oncology. 7/24/2024, Vol. 19 Issue 1, p1-9. 9p.
Publikováno v:
Journal of Nanjing Medical University: Natural Sciences. Jul2024, Vol. 44 Issue 7, p958-965. 8p.
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:
ZHENG Sijie1,2, XIANG Jia1,2, CHEN Qiantong1,2, LU Yingxin1,2, LIU Yun1,2, CHEN Huai1,2, HUANG Suidan1,2 suidan1122@163.com
Publikováno v:
Journal of Practical Medicine / Shiyong Yixue Zazhi. 7/25/2024, Vol. 40 Issue 14, p2003-2008. 6p.
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:
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