Results 211 to 220 of about 40,132 (283)

Characterization of an inorganic scintillator for small-field dosimetry in MR-guided radiotherapy. [PDF]

J Appl Clin Med Phys, 2020
Cusumano D, Placidi L, D'Agostino E, Boldrini L, Menna S, Valentini V, De Spirito M, Azario L.   +7 more
europepmc   +1 more source

Ticept: Wideband Electrical Properties Tomography by Tissue Composition Assessment With Quantitative  1$$ {}^1 $$H 23$$ {}^{23} $$Na 39$$ {}^{39} $$K Multinuclear MRI

Magnetic Resonance in Medicine, Volume 95, Issue 3, Page 1503-1512, March 2026.
ABSTRACT Purpose To develop a noninvasive method for estimating dielectric properties over a wide frequency range from 50 to 600 MHz. Existing methods are limited in accuracy and provide single‐frequency results. Furthermore, accurate knowledge of dielectric properties becomes more important, since medical device design and safety evaluation ...
Laura J. C. Barendsz, Kemal Sumser, Teresa Gerhalter, Rob M. C. Mestrom, Armin M. Nagel, Margarethus M. Paulides   +5 more
wiley   +1 more source

Quantifying Transmembrane Water Exchange by Diffusion NMR Methods: From Yeast Cells to Optic Nerve Ex Vivo

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
A comparative analysis of the two most prevalent diffusion NMR methods for exchange measurements, CG‐PFG and FEXSY. Transmembrane water exchange is measured in yeast cells and porcine optic nerves, before and after fixation. Complementary Monte Carlo simulations are conducted.
Yuval Scher, Shlomi Reuveni, Yoram Cohen
wiley   +1 more source

Dosimetric benefit of online treatment plan adaptation in stereotactic ultrahypofractionated MR-guided radiotherapy for localized prostate cancer. [PDF]

Front Oncol
Fink CA, Buchele C, Baumann L, Liermann J, Hoegen P, Ristau J, Regnery S, Sandrini E, König L, Rippke C, Bonekamp D, Schlemmer HP, Debus J, Koerber SA, Klüter S, Hörner-Rieber J.   +15 more
europepmc   +1 more source

Transceiver 16‐Channel Coaxial‐End Dipole Array for Combined Head and C‐Spine MRI at 9.4 T

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
A double‐row transceiver array consisting of 16 folded‐end coaxial‐end dipoles was designed. Curved dipole elements were aligned on a tight‐fitting, ergonomically shaped holder optimized for subject comfort. Transmit efficiency, B1+ field homogeneity, and SAR were numerically evaluated using EM‐simulations and optimized with respect to several ...
G. A. Solomakha, F. Glang, M. W. May, S. Mueller, J. Walzog, A. Aghaeifar, D. Bosch, J. Bause, O. Kraff, K. Scheffler, H. H. Quick, N. I. Avdievich   +11 more
wiley   +1 more source

Impact of 1.5 T Magnetic Field on Treatment Plan Quality in MR-Guided Radiotherapy: Typical Phantom Test Cases. [PDF]

Technol Cancer Res Treat
Yan L, Xu Y, Dai J.
europepmc   +1 more source

Influence of Basis Set Composition on Metabolite Quantification of 1H‐MRS at 3 T: Combining In Silico, In Vivo and In Vitro Evidence

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
We use synthetic (Aim 1), human brain (Aim 2) and phantom (Aim 3) data to assess how basis set choice affects Glu, tCr, tNAA and tCho quantification, focusing on the bias–variance trade‐off under varying SNR conditions. Including GABA, GSH, NAAG and glucose improved Glu estimates, reducing bias and variance below 10%.
Polina Emeliyanova, Laura M. Parkes, Caroline Lea‐Carnall, Stephen R. Williams   +3 more
wiley   +1 more source

Evaluation of clinical parallel workflow in online adaptive MR-guided Radiotherapy: A detailed assessment of treatment session times. [PDF]

Tech Innov Patient Support Radiat Oncol
Votta C, Iacovone S, Turco G, Carrozzo V, Vagni M, Scalia A, Chiloiro G, Meffe G, Nardini M, Panza G, Placidi L, Romano A, Cornacchione P, Gambacorta MA, Boldrini L.   +14 more
europepmc   +1 more source

Non‐Invasive, High‐Resolution (1H2O) Metabolic Activity Diffusion Imaging [MADI] of Rat Glioma

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
We employed Metabolic Activity Diffusion Imaging [MADI] and 18FDG‐PET in rats with syngeneic RG2 glioblastoma brain tumors. MADI quantifies kio (the cellular H2O efflux rate constant), cell volume (V), and cell density (ρ), without the use of contrast agents. The kioV product quantifies the rate of water efflux per cell.
Joshua W. Schlegel, Samantha M. Holland, Felice D. Kelly, Eric M. Baker, Jared Stoller, William Packwood, Xin Li, Ramon F. Barajas Jr., Charles S. Springer Jr., Martin M. Pike   +9 more
wiley   +1 more source

Real Time Evaluation of Whole Organ Perfusion by Magnetic Resonance Imaging in Ex Vivo Machine‐Perfused Liver

NMR in Biomedicine, Volume 39, Issue 3, March 2026.
Porcine livers underwent mechanical perfusion inside an MRI scanner, enabling dynamic quantitative measurements of whole organ perfusion. Vascular segmentation down to 0.45 mm resolution allowed quantification of morphological features such as vessel tortuosity, while Dynamic Contrast Enhanced MRI and diffusion weighted imaging was used to produce ...
Zainab L. Rai, Natalie A. Holroyd, Morenike Magbagbeola, Emre Doganay, Katie Doyle, Lucy Caselton, Agostino Stilli, Danail Stoyanov, Simon Walker‐Samuel, Brian R. Davidson   +9 more
wiley   +1 more source