Zobrazeno 1 - 10
of 1 011
pro vyhledávání: '"4DCT"'
Autor:
Didier Lustermans, Roua Abdulrahim, Vicki Trier Taasti, Juliane Szkitsak, Evita Švėgždaitė, Sarina Clarkin, Brigitte Reniers, Frank Verhaegen, Gabriel Paiva Fonseca
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 32, Iss , Pp 100656- (2024)
Background and purpose: In radiotherapy, the image quality of four-dimensional computed tomography (4DCT) is often degraded by artifacts resulting from breathing irregularities. Quality assurance mostly employ simplistic phantoms, not fully represent
Externí odkaz:
https://doaj.org/article/b366700ab922459fa9d71b0144252cff
Publikováno v:
Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, Vol 12, Iss 1 (2024)
This paper introduces and validates a new technique for analysing six degrees-of-freedom shoulder kinematics using four-dimensional computed tomography (4DCT), which uses a single vertebra to reference thoracic motion. Differences between the vertebr
Externí odkaz:
https://doaj.org/article/a13ea0c5f30c4b898112a0920d0f6563
Autor:
Ella L. Cook, Kuan-Hao Su, Geoff S. Higgins, Robert Johnsen, Jean-Paul Bouhnik, Daniel R. McGowan
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-13 (2024)
Abstract Background Respiratory motion artefacts are a pitfall in thoracic PET/CT imaging. A source of these motion artefacts within PET images is the CT used for attenuation correction of the images. The arbitrary respiratory phase in which the heli
Externí odkaz:
https://doaj.org/article/65640c14c13f43989069a0395e58af68
Akademický článek
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Publikováno v:
CT Lilun yu yingyong yanjiu, Vol 33, Iss 2, Pp 243-262 (2024)
In this paper, the main literature related to 4DCT imaging and reconstruction techniques over the past 20 years is reviewed, and the contents are summarized. This paper provides a systematic and comprehensive introduction to 4DCT research from five p
Externí odkaz:
https://doaj.org/article/802c672694f7411d825b27e48a514831
Autor:
Zahra Ghasemi, Payam Samadi Miandoab
Publikováno v:
Journal of Biomedical Physics and Engineering, Vol 14, Iss 1, Pp 55-66 (2024)
Background: During X-ray imaging, pulmonary movements can cause many image artifacts. To tackle this issue, several studies, including mathematical algorithms and 2D-3D image registration methods, have been presented. Recently, the application of dee
Externí odkaz:
https://doaj.org/article/6497289a40f341c8bf601f072445cb32
Autor:
Juliane Szkitsak, Andre Karius, Susanne Fernolendt, Philipp Schubert, Stefan Speer, Rainer Fietkau, Christoph Bert, Christian Hofmann
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 30, Iss , Pp 100584- (2024)
Background and purpose: Even with most breathing-controlled four-dimensional computed tomography (4DCT) algorithms image artifacts caused by single significant longer breathing still occur, resulting in negative consequences for radiotherapy. Our stu
Externí odkaz:
https://doaj.org/article/7ec3f49866b84ac288171b55150eb656
Akademický článek
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Autor:
Chrysi Papalazarou, Sima Qamhiyeh, Robert Kaatee, Joke De Rouck, Esther Decabooter, Guido C. Hilgers, Koen Salvo, Jacobus van Wingerden, Hilde Bosmans, Brent van der Heyden, Geert Pittomvils, Evelien Bogaert
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 29, Iss , Pp 100523- (2024)
Background and purpose: This work reports on the results of a survey performed on the use of computed tomography (CT) imaging for motion management, surface guidance devices, and their quality assurance (QA). Additionally, it details the collected us
Externí odkaz:
https://doaj.org/article/564e767dea6c40fe9293eb09eb2fda47
Autor:
Shuangshuang Li, Juan Liu, Shanbao Gao, Yicai Yin, Ling Zhang, Yongchao Han, Xishun Zhang, Yuanyuan Li, Jing Yan, Zhen Hou
Publikováno v:
Radiation Oncology, Vol 18, Iss 1, Pp 1-11 (2023)
Abstract Purpose CT ventilation image (CTVI)-guided radiotherapy that selectively avoids irradiating highly-functional lung regions has potential to reduce pulmonary toxicity. Considering Helical TomoTherapy (HT) has higher modulation capabilities, w
Externí odkaz:
https://doaj.org/article/f9e3759710424e4489ce13ee09ed495d