Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Matthias E. Bellemann"'
Publikováno v:
Biomedizinische Technik. Biomedical engineering. 64(6)
The operating life of endoscopy capsules is limited by the batteries needed for use. The capacity of corresponding batteries, however, is too short to cover the total period of gastrointestinal transit. To overcome this limitation, a novel kind of wi
Autor:
Lifeng Yu, Cynthia H. McCollough, Christian D. Eusemann, Luis S. Guimaraes, Jeff L. Fidler, Matthias E. Bellemann, Joel G. Fletcher, David R. Holmes, Anja Apel, David M. Hough
Publikováno v:
European Radiology. 21:644-652
To determine the potential for radiation dose reduction using sigmoidally-blended mixed-kV images from dual energy (DE) hepatic CT. Multiple contrast-enhanced, DE (80 kV/140 kV) datasets were reconstructed from 34 patients undergoing clinically-indic
Autor:
Stefan Hähnel, Sabine Heiland, Thien-Hoa Nguyen-Trong, Matthias E. Bellemann, Julia Reinhardt
Publikováno v:
Zeitschrift für Medizinische Physik. 19:278-287
Zusammenfassung Ziel In dieser Studie wurden MR-Artefakte verschiedener Stents auf der Basis von In-vitro-Messungen quantitativ und qualitativ untersucht. Ziel war es herauszufinden, welchen Einfluss der Sequenztyp und die Orientierung des Stents bez
Autor:
Silvio Dutz, Heinz-Dieter Kurland, Frank A. Müller, Eberhard Müller, Janet Grabow, Matthias E. Bellemann, Gisbert Staupendahl
Publikováno v:
Journal of Magnetism and Magnetic Materials. 321:1381-1385
The CO 2 laser evaporation technique is not only well suited for the production of magnetic iron oxide nanopowders, but also allows for their conditioning. Two optional methods, the ‘in situ’ coating and the co-laser evaporation, are introduced.
Autor:
Fritz Schick, Philipp Mertens, Matthias E. Bellemann, Bernd Michael Mueller-Bierl, Juergen Machann, Guenter Steidle
Publikováno v:
Medical Physics. 35:1777-1784
The amount and geometric distribution of paramagnetic components in tissue is considered as the basis of T 2 * -weighted magnetic resonance imaging(MRI). Such techniques are routinely applied for assessment of iron in parenchymal organs such as the l
Autor:
Matthias Zeisberger, Rudolf Hergt, Wilfried Andrä, Christopher H. Schmidt, Jörg Töpfer, Christiane Oestreich, Silvio Dutz, Robert Müller, Matthias E. Bellemann
Publikováno v:
Journal of Magnetism and Magnetic Materials. 311:51-54
Magnetic iron oxide nanoparticles with mean diameters in the range from 10 to 30 nm were prepared by modified chemical precipitation routes. The particles were suspended in an aqueous solution by coating of the particles with carboxymethyldextran. A
Autor:
Matthias E. Bellemann, Gisbert Staupendahl, Heinz-Dieter Kurland, Wilfried Andrä, Silvio Dutz, Janet Grabow
Publikováno v:
Journal of Magnetism and Magnetic Materials. 311:73-77
Magnetic iron oxide nanopowders were produced with the laser evaporation technique under normal process gas pressure. In addition, the generated particles were coated in situ with stearic acid and separated on magnets. The methods and the used labora
Autor:
Matthias E. Bellemann, Jürgen R. Reichenbach, Werner A. Kaiser, Dirk Schüler, Ingrid Hilger, Marcus R. Lisy, Karl-Heinz Herrmann, Annegret Hartung, Claus Lang
Publikováno v:
Journal of Magnetism and Magnetic Materials. 311:454-459
This work investigated macrophages labeled with magnetosomes for the possible detection of inflammations by MR molecular imaging. Pure magnetosomes and macrophages containing magnetosomes were analyzed using a clinical 1.5 T MR-scanner. Relaxivities
Autor:
Thomas Loenneker, Matthias E. Bellemann, K. A. Il’yasov, Juergen Hennig, Thierry A. G. M. Huisman, Joachim E. Fischer, Gerd Barta
Publikováno v:
European Radiology. 16:1651-1658
The objectives were to study the "impact" of the magnetic field strength on diffusion tensor imaging (DTI) metrics and also to determine whether magnetic-field-related differences in T2-relaxation times of brain tissue influence DTI measurements. DTI
Autor:
Silvio Dutz, R. Hergt, Wilfried Andrä, Jörg Töpfer, Matthias Zeisberger, Matthias E. Bellemann, Robert Müller, J. Mürbe
Publikováno v:
Zeitschrift für Physikalische Chemie. 220:145-151
Summary In the past, magnetic nanoparticles have found increasing interest in different biomedical applications, e.g. the magnetic hyperthermia of tumor cells or the remote controlled drug delivery to the gut. These applications are based on a magnet