Zobrazeno 1 - 10
of 1 280
pro vyhledávání: '"photon-counting detector"'
Autor:
Ibolyka Dudás, Leona Schultz, Márton Benke, Ákos Szücs, Pál Novák Kaposi, Attila Szijártó, Pál Maurovich-Horvat, Bettina Katalin Budai
Publikováno v:
BMC Medical Imaging, Vol 24, Iss 1, Pp 1-18 (2024)
Abstract Background Spectral imaging of photon-counting detector CT (PCD-CT) scanners allows for generating virtual non-contrast (VNC) reconstruction. By analyzing 12 abdominal organs, we aimed to test the reliability of VNC reconstructions in preser
Externí odkaz:
https://doaj.org/article/104b7726791940858a83112538d52b9b
Autor:
Dirk Graafen, Willi Bart, Moritz C. Halfmann, Lukas Müller, Lukas Hobohm, Yang Yang, Achim Neufang, Christine Espinola-Klein, Michael B. Pitton, Roman Kloeckner, Akos Varga-Szemes, Tilman Emrich
Publikováno v:
European Radiology Experimental, Vol 8, Iss 1, Pp 1-14 (2024)
Abstract Background Lower extremity peripheral artery disease frequently presents with calcifications which reduces the accuracy of computed tomography (CT) angiography, especially below-the-knee. Photon-counting detector (PCD)-CT offers improved spa
Externí odkaz:
https://doaj.org/article/8afa76a007d34c7c8ae8588f68623c04
Publikováno v:
Tomography, Vol 10, Iss 7, Pp 1168-1191 (2024)
Spectral photon-counting cone-beam computed tomography (CT) imaging is challenged by individual pixel response behaviours, which lead to noisy projection images and subsequent image artefacts like rings. Existing methods to correct for this either us
Externí odkaz:
https://doaj.org/article/ece8670ce05c4c2fb94eb9011c70366e
Autor:
Shunsuke Shibata, Misugi Urano, Nobuo Kitera, Haruka Noda, Shuntaro Isogai, Wenya Zhao, Toshihide Itoh, Tatsuya Kawai, Akio Hiwatashi
Publikováno v:
Radiology Case Reports, Vol 19, Iss 11, Pp 4721-4724 (2024)
A 77-year-old woman presented to our hospital with a 2-week history of fever, headache, and induration along the bilateral superficial temporal arteries (STAs). The color Doppler ultrasonography of the STA showed a hypoechoic mural thickening surroun
Externí odkaz:
https://doaj.org/article/0ebf5440e4294ffe891579a9e6e69ce5
Autor:
Kyuseok Kim, Youngjin Lee
Publikováno v:
Nuclear Engineering and Technology, Vol 56, Iss 6, Pp 2057-2062 (2024)
Among photon counting detector (PCD)-based technologies, the K-edge subtraction (KES) method has a very high material decomposition efficiency. Yet, since the increase in noise in the X-ray image to which the KES method is applied is inevitable, rese
Externí odkaz:
https://doaj.org/article/86ed957474e14d49be30dd65a9b02da8
Publikováno v:
Zhenduanxue lilun yu shijian, Vol 22, Iss 05, Pp 501-506 (2023)
Lymphangioleiomyomatosis (LAM) is a rare multisystem neoplastic disease and is primarily affected women of childbearing age and premenopausal women. LAM lesions involve the lungs [known as pulmonary Lymphangioleiomyomatosis (PLAM)], kidneys [such as
Externí odkaz:
https://doaj.org/article/af0eec67b069418ea31fc4af06032d04
Publikováno v:
Sensors, Vol 24, Iss 16, p 5307 (2024)
Spectral small-angle X-ray scattering (sSAXS) is a powerful technique for material characterization from thicker samples by capturing elastic X-ray scattering data in angle- and energy-dispersive modes at small angles. This approach is enabled by the
Externí odkaz:
https://doaj.org/article/c29a164f3b4246d7be4d7fbbb0268665
Autor:
Yannik C. Layer, Alexander Isaak, Narine Mesropyan, Patrick A. Kupczyk, Julian A. Luetkens, Tatjana Dell, Ulrike I. Attenberger, Daniel Kuetting
Publikováno v:
Heliyon, Vol 10, Iss 6, Pp e28142- (2024)
Rationale and objectives: Aim of this study was to assess the impact of contrast media dose (CMD) reduction on diagnostic quality of photon-counting detector CT (PCD-CT) and energy-integrating detector CT (EID-CT). Methods: CT scans of the abdominal
Externí odkaz:
https://doaj.org/article/c56c85e899c54b749ab696624650551c
Autor:
Arwed Elias Michael, Denise Schoenbeck, Matthias Michael Woeltjen, Jan Boriesosdick, Julius Henning Niehoff, Alexey Surov, Jan Borggrefe, Bernhard Schmidt, Christoph Panknin, Tilman Hickethier, David Maintz, Alexander Christian Bunck, Roman Johannes Gertz, Jan Robert Kroeger
Publikováno v:
Heliyon, Vol 10, Iss 6, Pp e27636- (2024)
1 Abstract: Rationale and objectives: Coronary computed tomography angiography (CCTA) is becoming increasingly important for the diagnostic workup of coronary artery disease, nevertheless, imaging of in-stent stenosis remains challenging. For the fir
Externí odkaz:
https://doaj.org/article/c5cbf7d1fa3b45609f4a59abbd87f3a9
Autor:
Victor Mergen, Stéphane Rusek, Filippo Civaia, Philippe Rossi, Rengarajan Rajagopal, Eduardo Bättig, Robert Manka, Alessandro Candreva, Matthias Eberhard, Hatem Alkadhi
Publikováno v:
Frontiers in Cardiovascular Medicine, Vol 11 (2024)
PurposeTo evaluate the feasibility and accuracy of quantification of calcified coronary stenoses using virtual non-calcium (VNCa) images in coronary CT angiography (CCTA) with photon-counting detector (PCD) CT compared with quantitative coronary angi
Externí odkaz:
https://doaj.org/article/9e92fb261843431abbe19085074bc562