Zobrazeno 1 - 10
of 992
pro vyhledávání: '"4DCT"'
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
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
Publikováno v:
Cancers, Vol 16, Iss 14, p 2593 (2024)
Parathyroid pathologies are suspected based on the biochemical alterations and clinical manifestations, and the predominant roles of imaging in primary hyperparathyroidism are localisation of tumour within parathyroid glands, surgical planning, and t
Externí odkaz:
https://doaj.org/article/d032be816a6148ff9888024ed0f6e29a
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:
Vanda Leipold, Ivana Alerić, Mihaela Mlinarić, Domagoj Kosmina, Fran Stanić, Mladen Kasabašić, Damir Štimac, Hrvoje Kaučić, Giovanni Ursi, Karla Schwarz, Igor Nikolić, Denis Klapan, Dragan Schwarz
Publikováno v:
Cancers, Vol 16, Iss 13, p 2358 (2024)
Image-guided radiotherapy supported by surface guidance can help to track lower lung lesions’ respiratory motion while reducing a patient’s exposure to ionizing radiation. However, it is not always clear how the skin’s respiratory motion magnit
Externí odkaz:
https://doaj.org/article/d37058cf7c4e4255907b6d6e5cb7d335
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
Autor:
Jinane Bakkali Tahiri, Martin Kyndt, Jennifer Dhont, Akos Gulyban, Juliane Szkitsak, Evelien Bogaert, Nick Reynaert, Manuela Burghelea
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 27, Iss , Pp 100475- (2023)
This study aimed to develop and validate a comprehensive, reproducible and automatic 4DCT Quality Assurance (QA) workflow (QAMotion) that evaluates image accuracy across various regular and irregular breathing patterns. Volume and amplitude deviation
Externí odkaz:
https://doaj.org/article/e17c9efee32240e29757e4559f0abff6
Autor:
Yoshinori Tanabe, Hidekazu Tanaka
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 24, Iss , Pp 82-87 (2022)
Background and purpose: The low tracking accuracy of lung stereotactic body radiotherapy (SBRT) risks reduced treatment efficacy. We used four-dimensional computed tomography (4DCT) images to determine the correlation between changes in fiducial mark
Externí odkaz:
https://doaj.org/article/39e15ece63294d29aab16da51393e38d