Zobrazeno 1 - 10
of 221
pro vyhledávání: '"A. Viktor Vegh"'
Publikováno v:
Frontiers in Radiology, Vol 4 (2024)
IntroductionTask-based language fMRI is a non-invasive method of identifying brain regions subserving language that is used to plan neurosurgical resections which potentially encroach on eloquent regions. The use of unstructured fMRI paradigms, such
Externí odkaz:
https://doaj.org/article/d39a76dbe17d462cad5e39c939d1ce72
Publikováno v:
eLife, Vol 12 (2024)
Diffusional kurtosis imaging (DKI) is a methodology for measuring the extent of non-Gaussian diffusion in biological tissue, which has shown great promise in clinical diagnosis, treatment planning, and monitoring of many neurological diseases and dis
Externí odkaz:
https://doaj.org/article/a1f0aaf09bed4aa9b9623ff1265e8d5f
Autor:
Hamed Moradi, Rajat Vashistha, Soumen Ghosh, Kieran O’Brien, Amanda Hammond, Axel Rominger, Hasan Sari, Kuangyu Shi, Viktor Vegh, David Reutens
Publikováno v:
EJNMMI Research, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Background Accurate measurement of the arterial input function (AIF) is crucial for parametric PET studies, but the AIF is commonly derived from invasive arterial blood sampling. It is possible to use an image-derived input function (IDIF) o
Externí odkaz:
https://doaj.org/article/69761c96faf54934855d844a19edde7a
Publikováno v:
Frontiers in Radiology, Vol 4 (2024)
IntroductionThe reconstruction of PET images involves converting sinograms, which represent the measured counts of radioactive emissions using detector rings encircling the patient, into meaningful images. However, the quality of PET data acquisition
Externí odkaz:
https://doaj.org/article/ed6f7046d469406a847044a07f2e4abd
Publikováno v:
EJNMMI Research, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Background In parametric PET, kinetic parameters are extracted from dynamic PET images. It is not commonly used in clinical practice because of long scan times and the requirement for an arterial input function (AIF). To address these limita
Externí odkaz:
https://doaj.org/article/f174a38162b14c0cb26648edb5eef5e6
Autor:
Rajat Vashistha, Hamed Moradi, Amanda Hammond, Kieran O’Brien, Axel Rominger, Hasan Sari, Kuangyu Shi, Viktor Vegh, David Reutens
Publikováno v:
EJNMMI Research, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract Background The indirect method for generating parametric images in positron emission tomography (PET) involves the acquisition and reconstruction of dynamic images and temporal modelling of tissue activity given a measured arterial input fun
Externí odkaz:
https://doaj.org/article/1904f39ec0ce4722bf3405e2d457bd14
Autor:
Azin Shokraei Fard, David C. Reutens, Stuart C. Ramsay, Steven J. Goodman, Soumen Ghosh, Viktor Vegh
Publikováno v:
Frontiers in Neurology, Vol 15 (2024)
BackgroundCross-modality image estimation can be performed using generative adversarial networks (GANs). To date, SPECT image estimation from another medical imaging modality using this technique has not been considered. We evaluate the estimation of
Externí odkaz:
https://doaj.org/article/64259dfa2c694328b0aea3f584349b87
Autor:
Yang Gao, Zhuang Xiong, Amir Fazlollahi, Peter J Nestor, Viktor Vegh, Fatima Nasrallah, Craig Winter, G. Bruce Pike, Stuart Crozier, Feng Liu, Hongfu Sun
Publikováno v:
NeuroImage, Vol 259, Iss , Pp 119410- (2022)
Quantitative susceptibility mapping (QSM) is an MRI post-processing technique that produces spatially resolved magnetic susceptibility maps from phase data. However, the traditional QSM reconstruction pipeline involves multiple non-trivial steps, inc
Externí odkaz:
https://doaj.org/article/e48589816577400e8676a2c4b06c8043
Publikováno v:
IEEE Access, Vol 9, Pp 107965-107975 (2021)
Diffusion kurtosis has become an important magnetic resonance imaging (MRI) modality for non-invasively mapping the microstructural variations in living tissues. Theoretically, the spatial resolution of diffusion kurtosis imaging (DKI) can be signifi
Externí odkaz:
https://doaj.org/article/dc4a2960250e4e25acba67635653e04e
Publikováno v:
Frontiers in Neuroscience, Vol 16 (2022)
Externí odkaz:
https://doaj.org/article/27f0bd34d9f74abc86dcca3e94f51c96