Browsing by Author "Utkur, Mustafa"

Now showing items 1-12 of 12

    • Anisotropic dynamics of a self-assembled colloidal chain in an active bath 

      Aporvari, Mehdi Shafiei; Utkur, Mustafa; Sarıtaş, Emine Ülkü; Volpe, G.; Stenhammar, J. (Royal Society of Chemistry, 2020)
      Anisotropic macromolecules exposed to non-equilibrium (active) noise are very common in biological systems, and an accurate understanding of their anisotropic dynamics is therefore crucial. Here, we experimentally investigate ...

    • Calibration-free relaxation-based multi-color magnetic particle imaging 

      Muslu, Yavuz; Utkur, Mustafa; Demirel, Ömer Burak; Sarıtaş, Emine Ülkü (Institute of Electrical and Electronics Engineers, 2018)
      Magnetic particle imaging (MPI) is a novel imaging modality with important potential applications, such as angiography, stem cell tracking, and cancer imaging. Recently, there have been efforts to increase the functionality ...

    • Development of tailored SPION-PNIPAM nanoparticles by ATRP for dually responsive doxorubicin delivery and MR imaging 

      Yar, Y.; Khodadust, R.; Akkoç, Y.; Utkur, Mustafa; Sarıtaş, Emine Ülkü; Gözüaçık, D.; Acar, H. Y. (Royal Society of Chemistry, 2018)
      Biocompatible, colloidally stable and ultra-small Fe3O4 nanoparticles (SPIONs) coated with poly(N-isopropylacrylamide) (PNIPAM) were synthesized via surface-initiated ATRP (atom transfer radical polymerization) to prevent ...

    • Magnetic particle fingerprinting using arbitrary waveform relaxometer 

      Yağız, Ecrin; Utkur, Mustafa; Top, C. B.; Sarıtaş, Emine Ülkü (Infinite Science Publishing, 2020)
      In magnetic particle imaging (MPI), the information about the local environment, such as its viscosity and temperature, can be inferred via the relaxation behavior of the nanoparticles. As the nanoparticle signal also ...

    • MNP characterization and signal prediction using a model-based dictionary 

      Alpman, Asli; Utkur, Mustafa; Saritas, Emine Ulku (Infinite Science Publishing, 2022-03-21)
      Magnetic Particle Imaging (MPI) utilizes the nonlinear magnetic response of magnetic nanoparticles (MNPs) for signal localization. Accurate modeling of the magnetization behavior of MNPs is crucial for understanding their ...

    • A new class of cubic SPIONs as a dual-mode T1 and T2 contrast agent for MRI 

      Alipour, Akbar; Soran-Erdem, Zeliha; Utkur, Mustafa; Sharma, Vijay Kumar; Algın, Oktay; Sarıtaş, Emine Ülkü; Demir, Hilmi Volkan (Elsevier, 2018)
      Superparamagnetic iron oxide nanoparticles (SPIONs) are widely used as a robust negative contrast agent on conventional MRI. In this study, we (a) synthesized a new class of cubic SPIONs as a dual-mode contrast agent in ...

    • PNS limits for Human Head-Size MPI systems: Preliminary results 

      Ozaslan, Ali Alper; Utkur, Mustafa; Canpolat, Ugur; Tuncer, Meryem Asli; Oguz, Kader Karli; Saritas, Emine Ulku (Infinite Science Publishing, 2022)
      Magnetic Particle Imaging (MPI) utilizes kHz-range sinusoidal drive fields to excite magnetic nanoparticles. These time-varying magnetic fields induce electric fields within the human body, which in turn can induce peripheral ...

    • Relaxation-based color magnetic particle imaging for viscosity mapping 

      Utkur, Mustafa; Muslu, Yavuz; Sarıtaş, Emine Ülkü (American Institute of Physics, 2019)
      Magnetic particle imaging (MPI) uses superparamagnetic iron oxide (SPIO) nanoparticles as biomedical imaging tracers. The potential applications of MPI have recently been broadened by the introduction of “color” MPI ...

    • Relaxation-based viscosity mapping for magnetic particle imaging 

      Utkur, Mustafa; Muslu, Yavuz; Sarıtaş, Emine Ülkü (Institute of Physics Publishing, 2017)
      Magnetic particle imaging (MPI) has been shown to provide remarkable contrast for imaging applications such as angiography, stem cell tracking, and cancer imaging. Recently, there is growing interest in the functional ...

    • Simultaneous temperature and viscosity estimation capability via magnetic nanoparticle relaxation 

      Utkur, Mustafa; Sarıtaş, Emine Ülkü (Wiley-Blackwell Publishing, Inc., 2022-04)
      Purpose: Magnetic particle imaging (MPI) is emerging as a highly promising imaging modality. Magnetic nanoparticles (MNPs) are used as imaging tracers in MPI, and their relaxation behavior provides the foundation for its ...

    • Temperature mapping via relaxation-based color MPI 

      Utkur, Mustafa; Sarıtaş, Emine Ülkü (Infinite Science Publishing, 2020)
      In magnetic particle imaging (MPI), the relaxation behavior of the nanoparticles has been exploited to expand quantitative mapping capabilities of MPI to applications such as viscosity mapping and temperature mapping. We ...

    • Vector modulator based active compensation of direct feedthrough 

      Taşdelen, Bilal; Yağız, Ecrin; Utkur, Mustafa; Çağıl, Ahmet R.; Top, C. B.; Atalar, Ergin; Sarıtaş, Emine Ülkü (Infinite Science Publishing, 2020)
      In magnetic particle imaging (MPI), simultaneous excitation and signal acquisition leads to direct feedthrough problems. While this direct-feedthrough can be mitigated up to some extent with passive compensation, this may ...