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The continuous development of magnetic resonance imaging broadens the range of applications to newer areas. Using MRI, we can not only visualize, but also track pharmaceutical substances and labeled cells in both in vivo and in vitro tests. H is widely used in the MRI method, which is determined by its high content in the human body. The potential of the MRI method makes it an excellent tool for imaging the morphology of the examined objects, and also enables registration of changes at the level of metabolism. There are several reports in the scientific publications on the use of clinical MRI for in vitro tracking. The use of multinuclear MRI has great potential for scientific research and clinical studies. Tuning MRI scanners to the Larmor frequency of a given nucleus, allows imaging without tissue background. Heavy nuclei are components of both drugs and contrast agents and molecular complexes. The implementation of hyperpolarization techniques allows for better MRI sensitivity. The aim of this review is to present the use of multinuclear MRI for investigations in drug delivery.
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http://dx.doi.org/10.3390/molecules27196493 | DOI Listing |
Objective: Receive-only frequency translation enables MRI scanners with X-nuclear capabilities to perform simultaneous/interleaved multi-nuclear experiments. Mixing only on the receive side avoids modifying the transmit path, which often has narrow-band components. However, phase incoherence is introduced at the radio frequency mixer due to differing local oscillator frequencies between transmit and receive, necessitating phase correction.
View Article and Find Full Text PDFAnnu Int Conf IEEE Eng Med Biol Soc
July 2024
Multinuclear MRI/S offers a powerful tool for noninvasive diagnostics and disease monitoring but remains largely underutilized in part due to the intrinsically low sensitivity of X-nuclei scans. This has led to continued research interest into the optimization of multi-nuclear coil designs for double-and triple-tuned coils that can facilitate scaling into higher channel count arrays to increase sensitivity. Here we present a new design for a parallel trap network that can create a simultaneous triple-tuned coil for H, P and Na at 4.
View Article and Find Full Text PDFJ Chromatogr A
April 2025
University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 48, 48149 Münster, Germany. Electronic address:
This study presents a newly developed high-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS) method for quantification of Gd complexes in a tetrameric, macrocyclic Gd-based MRI contrast agent (GBCA). Since for the multimeric GBCA Gadoquatrane, currently in Phase III clinical development, mainly multinuclear Gd complexes are expected as by-products from the route of synthesis, HPLC-ICP-MS is suitable for the quantitative determination of these Gd species. The developed HPLC-ICP-MS method offers high sensitivity and accurate quantification based on external calibration with a generic Gd standard and is thus a powerful alternative to routinely used HPLC-UV in the pharmaceutical industry.
View Article and Find Full Text PDFJ Physiol
March 2025
Department of Kinesiology and Institute for Applied Life Sciences, University of Massachusetts Amherst, MA, USA.
Mitochondrial efficiency is a critical metabolic parameter with far-reaching implications for tissue homeostasis. However, the direct measurement of oxygen consumption (VO) and ATP production from a large tissue sample in vivo remains challenging. Using phosphorus (P) and proton (H) magnetic resonance spectroscopy (MRS), this study aimed to non-invasively quantify the skeletal muscle ATP synthesis rate and VO to determine mitochondrial efficiency at rest and during muscle contraction in humans.
View Article and Find Full Text PDFNMR Biomed
March 2025
Brain Tumor Imaging Laboratory, Center for Computer Vision and Imaging Biomarkers, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.
MRI in vivo is a powerful clinical diagnosis tool as it allows acquiring noninvasively images with an ample range of contrasts. Advanced imaging techniques such as chemical exchange saturation transfer (CEST) allow measuring metabolic information including pH. Sodium tissue concentration, which can be measured by Na MRI, is sensitive to changes in different pathological conditions.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!