Zobrazeno 1 - 10
of 172
pro vyhledávání: '"K. Kaluzynski"'
Publikováno v:
BMC Medical Imaging, Vol 21, Iss 1, Pp 1-18 (2021)
BMC Medical Imaging
BMC Medical Imaging
Background In majority of studies on speckle tracking echocardiography (STE) the strain estimates are averaged over large areas of the left ventricle. This may impair the diagnostic capability of the STE in the case of e.g. local changes of the cardi
Novel 3D heart left ventricle muscle segmentation method for PET-gated protocol and its verification
Autor:
K. Kaluzynski, Roberto Sciagrà, Paola Saletti, Rita Bonini, Cyrill Burger, Elena Lorenzini, Tomasz Kubik, Selene Margiacchi, Alessandro Passeri
Publikováno v:
Annals of Nuclear Medicine
Objective The aim of this study was to propose and verify a universal method of left ventricular myocardium segmentation, able to operate on heart gated PET data with different sizes, shapes and uptake distributions. The proposed method can be classi
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 65:1789-1803
Effect of the out-of-plane (OOP) movement amplitude on estimates of global displacements (radial, circumferential) and strains (radial $\varepsilon _{\mathrm {R}}$ , circumferential $\varepsilon _{\mathrm {C}}$ ) was studied in an ellipsoidal model o
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Publikováno v:
Biomedical Signal Processing and Control. 56:101698
For measuring the thickness of soft tissue in magnetic resonance (MRI) images, precise borders between skull and face surfaces should be known. We present an algorithm for segmentation of the human head in T1-weighted MRI images that generates smooth
Publikováno v:
Scopus-Elsevier
Cardiac strain quantification using ultrasound is an active area of research. Physical left ventricle (LV) model play a significant role in the evaluation and development of myocardium strain imaging techniques. Several LV models have been reported.
Autor:
K. Kaluzynski
Publikováno v:
Medical Engineering & Physics. 36:859-868
Simulated signals comprising components (trains of Gaussian packets) resulting from cardiac movements and from pseudorespiratory movements with added white noise were submitted to Empirical Mode Decomposition. The increase of sampling frequency fs (f
Publikováno v:
Biocybernetics and Biomedical Engineering. 34:19-24
Methods for imaging myocardial strains are a subject of intense research. Many methods are being proposed by scientists from numerous laboratories. Those methods are designated for ultrasonic imaging or for magnetic resonance tomography. Attempts to
Autor:
Piet Claus, Beata Lesniak-Plewinska, Brecht Heyde, Dirk Loeckx, An Elen, Szymon Cygan, Hon Fai Choi, Jan D'hooge, K. Kaluzynski, Daniel Barbosa
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 59:668-682
Automatic quantification of regional left ventricular deformation in volumetric ultrasound data remains challenging. Many methods have been proposed to extract myocardial motion, including techniques using block matching, phase-based correlation, dif
Publikováno v:
Medical Engineering & Physics. 30:426-433
A method for automatic detection of fetal breathing movements has been proposed, based on the time-frequency structure of the corresponding continuous wave ultrasonic Doppler signals. The method uses spectral analysis of the envelope of the direction