Browsing by Keywords "Alternating direction method of multipliers"

ADMM based mainlobe power constrained phase-only sidelobe supression

Alp, Yaşar Kemal; Arıkan, Orhan (IEEE, 2014)

A novel sidelobe suppression technique is proposed for phased arrays, where only the phases of the array elements are adjusted to suppress the gain in the direction of interest while keeping the mainlobe power at a certain ...

Coded scenes for fast system calibration in magnetic particle imaging

Ilbey, S.; Top, C. B.; Güngör, A.; Sarıtaş, Emine Ülkü; Güven, E. (IEEE, 2018)

Magnetic nanoparticle (MNP) agents have a wide range of clinical application areas for both imaging and therapy. MNP distribution inside the body can be imaged using Magnetic Particle Imaging (MPI). For MPI image reconstruction ...

Compressed multi-contrast magnetic resonance image reconstruction using Augmented Lagrangian Method

Güngör, A.; Kopanoğlu, E.; Çukur, Tolga; Güven, H. E. (IEEE, 2016)

In this paper, a Multi-Channel/Multi-Contrast image reconstruction algorithm is proposed. The method, which is based on the Augmented Lagrangian Method uses joint convex objective functions to utilize the mutual information ...

Image reconstruction for Magnetic Particle Imaging using an Augmented Lagrangian Method

Ilbey S.; Top C.B.; Çukur, Tolga; Sarıtaş, Emine Ülkü; Guven H.E. (IEEE, 2017)

Magnetic particle imaging (MPI) is a relatively new imaging modality that images the spatial distribution of superparamagnetic iron oxide nanoparticles administered to the body. In this study, we use a new method based on ...

Real-time three-dimensional image reconstruction using alternating direction method of multipliers for magnetic particle imaging

İlbey, Serhat; Güngör, A.; Top, C. B.; Sarıtaş, Emine Ülkü; Güven, H. E. (IEEE, 2018)

Manyetik Parçacık Görüntüleme (MPG), süperparamanyetik demiroksit nanoparçacıklarının uzamsal dağılımını tespit etmekte kullanılan görece yeni bir medikal görüntüleme yöntemidir. MPG’de görüntü geriçatımı için kullanılan ...

A synthesis-based approach to compressive multi-contrast magnetic resonance imaging

Güngör, A.; Kopanoğlu, E.; Çukur, Tolga; Güven, H. E. (IEEE, 2017)

In this study, we deal with the problem of image reconstruction from compressive measurements of multi-contrast magnetic resonance imaging (MRI). We propose a synthesis based approach for image reconstruction to better ...