Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Johan Brynolfsson"'
Autor:
Matthew Rettig, Kerstin Johnsson, Michael J. Morris, Nicholas G. Nickols, Anders Bjartell, Aseem Anand, Johan Brynolfsson, Hannicka Maria Eleonora Sahlstedt, Stephan Probst, Mathias Eiber
Publikováno v:
European Journal of Nuclear Medicine and Molecular Imaging
Purpose The application of automated image analyses could improve and facilitate standardization and consistency of quantification in [18F]DCFPyL (PSMA) PET/CT scans. In the current study, we analytically validated aPROMISE, a software as a medical d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95fc0916d9450660350910d9cc0669fc
http://europepmc.org/articles/PMC8803714
http://europepmc.org/articles/PMC8803714
Autor:
Neil Parikh, Pablo Borrelli, Kerstin Johnsson, Nicholas G. Nickols, Johan Brynolfsson, Lida Jafari, Matthias Eiber, M. Rettig, Jesus E. Juarez, Aseem Anand
Publikováno v:
Journal of Nuclear Medicine. 63:233-239
Rationale: Standardized staging and quantitative reporting is necessary to demonstrate the association of 18F-DCFPyL PET/CT (PSMA) imaging with clinical outcome. This work introduces an automated platform to implement and extend the Prostate Cancer M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9226290a4d5495fe5cb5023e0f58bd6f
https://doi.org/10.2967/jnumed.120.261863
https://doi.org/10.2967/jnumed.120.261863
Publikováno v:
ICASSP
In this paper, the matched reassigned spectrogram is expanded into a novel matched phase reassignment (MPR) method based on the reassigned cross-spectrogram. It is shown that for two phase synchronized oscillating transient signals, the method gives
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01b54411fd66cb2788db426b78e7dbfb
https://doi.org/10.1109/icassp40776.2020.9053684
https://doi.org/10.1109/icassp40776.2020.9053684
Autor:
Maria Sandsten, Johan Brynolfsson
Publikováno v:
Signal Processing. 150:20-32
In this paper we suggest an algorithm for estimation of the parameters detailing Oscillating Gaussian functions. The different components of the signal are first detected in the spectrogram. After this we exploit the fact that a Gaussian function may
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ff78def9519d0e4700394576ac685a2
https://doi.org/10.1016/j.sigpro.2018.03.022
https://doi.org/10.1016/j.sigpro.2018.03.022
Publikováno v:
Signal Processing. 183:107913
In this paper we present the matched window reassignment method, generalizing the results to complex valued signals in multiple dimensions. For an oscillating transient signal with an envelope shape described by an arbitrary twice differentiable func
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eecebd283afeb7b759c85629a3494cf0
https://doi.org/10.1016/j.sigpro.2020.107913
https://doi.org/10.1016/j.sigpro.2020.107913
Publikováno v:
ICASSP
Previous studies have shown that measurements of beluga whale (Delphinapterus leucas) and bottlenose dolphin (Tur-siops truncatus) echolocation signals at off-axis angles may be well modeled using a Gaussian bell function or a chirped Gaussian functi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4f8bb769393cc40128158a906524f42
https://doi.org/10.1109/icassp.2019.8683441
https://doi.org/10.1109/icassp.2019.8683441
Publikováno v:
IEEE Transactions on Signal Processing; 64(7), pp 1798-1807 (2016)
In this work, we present a method for estimating the parameters detailing an unknown number of linear, possibly harmonically related, chirp signals, using an iterative sparse reconstruction framework. The proposed method is initiated by a re-weighted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de07a230e3c36d1d017c21cc8b370f59
https://doi.org/10.1109/tsp.2015.2507538
https://doi.org/10.1109/tsp.2015.2507538
Publikováno v:
EUSIPCO
In this paper, we propose a novel I-D spectral estimator for signals with mixed spectra. The proposed method is partly based on the recently introduced smooth spectral estimator LIMES, in which the smoothness is accounted for by assuming linearity wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f304319e9ac1f3e64c2c315247fdf70
https://doi.org/10.23919/eusipco.2018.8553105
https://doi.org/10.23919/eusipco.2018.8553105
Publikováno v:
EUSIPCO
In this paper we calculate reassigned spectrograms using the envelope of an arbitrary signal as matched window. We show that the matched window then give the perfectly localized reassignment for any time-translated and frequency-modulated transient s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3361143213b73cf0bbff94f64a0c229d
https://doi.org/10.23919/eusipco.2018.8553204
https://doi.org/10.23919/eusipco.2018.8553204
Autor:
Johan Brynolfsson, Maria Sandsten
Publikováno v:
EUSIPCO
A novel feature extraction method for low-dimensional signal representation is presented. The features are useful for classification of non-stationary multi-component signals with stochastic variation in amplitudes and time-frequency locations. Using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95d2f46692307504db4e913bad7d82b8
