Results 141 to 150 of about 229,446 (278)

Time‐Division Multiplexing for Parallel Transmission at Ultra‐High Field With Limited RF Channels

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Investigating time‐division multiplexing for parallel transmission in ultra high‐field imaging, striving for homogeneous whole brain excitation with a limited number of RF channels. Methods A fast RF switch was built to alternately route 8 transmit channels to each row of a double‐row 16‐element transmit coil array at a 9.4 T human MRI
Felix Glang, Georgiy A. Solomakha, Dario Bosch, Klaus Scheffler, Nikolai I. Avdievich   +4 more
wiley   +1 more source

Magnetic Properties of Ferritin at Different Levels of Degradation: Implications for MRI‐Based Iron Quantification in the Brain

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ferritin's iron core exhibits complex magnetic properties, as suggested by magnetometry and Mössbauer spectroscopy, which remain incompletely understood. In particular, the antiferromagnetic inner core could influence the accuracy of iron quantification using MRI and raise concerns about postmortem validation studies involving degraded
Stefan Ropele, Sowmya Sunkara, Snježana Radulović, Saška Lipovšek, Michael Stöger‐Pollach, Christoph Birkl, Walter Gössler, Christian Enzinger, Gerd Leitinger   +8 more
wiley   +1 more source

Clinical Presentation of Hearing Loss After Contact with a Fish: Case Report. [PDF]

J Clin Med
Rubicz N, Meimberg H, Rupprecht C, Poier-Fabian N, Folger-Buchegger U, Zwittag PM.   +5 more
europepmc   +1 more source

Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To investigate dipole antennas with electronically switchable transmit field patterns to improve flip angle homogeneity in ultra‐high field MRI. Methods Reconfigurable dipole elements that could produce two distinct electronically switchable B1+$$ {B}_1^{+} $$ field profiles were conceptualized and constructed. Eight such elements were
Dario Bosch, Georgiy A. Solomakha, Felix Glang, Martin Freudensprung, Nikolai Avdievich, Klaus Scheffler   +5 more
wiley   +1 more source

Retinal Morphology in Successfully Treated Macula-Off Retinal Detachment Based on Semiautomated Layer Quantification of High-Resolution Optical Coherence Tomography. [PDF]

Transl Vis Sci Technol
Kreminger JE, Hollaus M, Reiter GS, Gumpinger M, Bogunovic H, Schmidt-Erfurth U, Sacu S.   +6 more
europepmc   +1 more source

A Novel 9‐Channel 1H, 3‐Channel 31P Radiofrequency Coil for Interleaved Multinuclear Studies of Human Calf Muscle at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a double‐tuned calf coil with excellent 1H and 31P performance to study muscle physiology by interleaved 1H/31P MRS and parallel imaging at 7 T. Methods The coil combines three 1H transceive dipoles, six 1H receive‐only loops and three 31P transceive loops, arranged in a nested, half‐cylindrical layout.
Veronika Cap, Vasco Rafael Rocha dos Santos, Kostiantyn Repnin, Onisim Soanca, Elmar Laistler, Peter Wolf, Graham J. Kemp, Roberta Frass‐Kriegl, Martin Meyerspeer   +8 more
wiley   +1 more source

Three new <i>Cerodontha</i> species from Inner Mongolia and Qinghai with a checklist of thirty-two Chinese species (Diptera, Agromyzidae). [PDF]

Zookeys
Fu XT, Shi L, Wang SM.
europepmc   +1 more source

A Self‐Healing Conductive PVP/SUM Hydrogel for Real‐Time Human Motion Detection

Nano Select, EarlyView.
The PVP/SUM hydrogel exhibits self‐healing, conductivity, and strong mechanical performance due to H‐bonds and dipole–dipole interactions. It elongates up to 330% and shows fracture strength between 0.9 and 1.5 MPa under varying strain rates. With a conductivity of 3.28 × 10−5 S/cm, it responds rapidly to human motion, enabling real‐time monitoring for
Vinnakoti Meghana, Illa Ramakanth
wiley   +1 more source

Identification of a Novel <i>DNAAF3</i> Variant in a 54-Year-Old Patient With Newly Diagnosed Primary Ciliary Dyskinesia (PCD). [PDF]

Case Rep Genet
Wirtz MM, Ebner S, Pleyers A, Firlei-Fleischmann N, Untersteiner R, Studnicka M.   +5 more
europepmc   +1 more source

Veronica paczoskiana is no more than a pine forest ecotype of V. spicata that evolved independently in forest‐steppes of Ukraine and the Altai region

Nordic Journal of Botany, EarlyView.
The Eurasian steppe area has been a dynamic vegetation biome during the Pleistocene with its repeated cycles of forest advances and retreats. Such a scenario allows the evolution of ecotypes at the ecotone with the potential for parallel evolution in different parts of the distribution area.
Dirk C. Albach, Gulzar Khan, Zoya M. Tsymbalyuk, Lyudmila M. Nitsenko, Sergei L. Mosyakin   +4 more
wiley   +1 more source