Zobrazeno 1 - 10
of 1 919
pro vyhledávání: '"A Zaiss"'
Autor:
Dawood, Peter, Blaimer, Martin, Herrler, Jürgen, Liebig, Patrick, Weinmüller, Simon, Malik, Shaihan, Jakob, Peter M., Zaiss, Moritz
Purpose: To non-heuristically identify dedicated variable flip angle (VFA) schemes optimized for the point-spread function (PSF) and signal-to-noise ratio (SNR) of multiple tissues in 3D FSE sequences with very long echo trains at 7T. Methods: The pr
Externí odkaz:
http://arxiv.org/abs/2409.20251
Magnetic resonance imaging (MRI) relies on radiofrequency (RF) excitation of proton spin. Clinical diagnosis requires a comprehensive collation of biophysical data via multiple MRI contrasts, acquired using a series of RF sequences that lead to lengt
Externí odkaz:
http://arxiv.org/abs/2408.08376
Abstract Purpose The complex signal decay during the transient FLASH MRI readout can lead to artifacts in magnitude and phase images. We show that target-driven optimization of individual rf flip angles and phases can realize near-ideal signal behavi
Externí odkaz:
http://arxiv.org/abs/2406.19877
Autor:
Stilianu, Clemens, Graf, Christina, Huemer, Markus, Diwoky, Clemens, Soellradl, Martin, Rund, Armin, Zaiss, Moritz, Stollberger, Rudolf
Purpose: To employ optimal control for the numerical design of CEST saturation pulses to maximize contrast and stability against $B_0$ inhomogeneities. Theory and Methods: We applied an optimal control framework for the design pulse shapes for CEST s
Externí odkaz:
http://arxiv.org/abs/2404.18764
Reconstructing digital brain phantoms in the form of voxel-based, multi-channeled tissue probability maps for individual subjects is essential for capturing brain anatomical variability, understanding neurological diseases, as well as for testing ima
Externí odkaz:
http://arxiv.org/abs/2404.14739
Autor:
West, Daniel J, Glang, Felix, Endres, Jonathan, Leitão, David, Zaiss, Moritz, Hajnal, Joseph V, Malik, Shaihan J
MRI systems are traditionally engineered to produce close to idealized performance, enabling a simplified pulse sequence design philosophy. An example of this is control of eddy currents produced by gradient fields; usually these are compensated by p
Externí odkaz:
http://arxiv.org/abs/2403.17575
Autor:
Dawood, Peter, Breuer, Felix, Homolya, Istvan, Stebani, Jannik, Gram, Maximilian, Jakob, Peter M., Zaiss, Moritz, Blaimer, Martin
Purpose: To develop an image space formalism of multi-layer convolutional neural networks (CNNs) for Fourier domain interpolation in MRI reconstructions and analytically estimate noise propagation during CNN inference. Theory and Methods: Nonlinear a
Externí odkaz:
http://arxiv.org/abs/2402.17410
Autor:
Dang, Hoai Nam, Golkov, Vladimir, Wimmer, Thomas, Cremers, Daniel, Maier, Andreas, Zaiss, Moritz
Current MRI super-resolution (SR) methods only use existing contrasts acquired from typical clinical sequences as input for the neural network (NN). In turbo spin echo sequences (TSE) the sequence parameters can have a strong influence on the actual
Externí odkaz:
http://arxiv.org/abs/2305.07524
Autor:
Wimmer, Thomas, Golkov, Vladimir, Dang, Hoai Nam, Zaiss, Moritz, Maier, Andreas, Cremers, Daniel
The ability of convolutional neural networks (CNNs) to recognize objects regardless of their position in the image is due to the translation-equivariance of the convolutional operation. Group-equivariant CNNs transfer this equivariance to other trans
Externí odkaz:
http://arxiv.org/abs/2304.05864
Autor:
Brenda Krishnacoumar, Martin Stenzel, Hilal Garibagaoglu, Yasunori Omata, Rachel L. Sworn, Thea Hofmann, Natacha Ipseiz, Magdalena A. Czubala, Ulrike Steffen, Antonio Maccataio, Cornelia Stoll, Christina Böhm, Martin Herrmann, Stefan Uderhardt, Robert H. Jenkins, Philip R. Taylor, Anika Grüneboom, Mario M. Zaiss, Georg Schett, Gerhard Krönke, Carina Scholtysek
Publikováno v:
Bone Research, Vol 12, Iss 1, Pp 1-10 (2024)
Abstract Efficient cellular fusion of mononuclear precursors is the prerequisite for the generation of fully functional multinucleated bone-resorbing osteoclasts. However, the exact molecular factors and mechanisms controlling osteoclast fusion remai
Externí odkaz:
https://doaj.org/article/a3409e48ebd5446880ba7bab830dfe79