Pulmonary MRI Contrast Using Surface Quadrupolar Relaxation (SQUARE) of Hyperpolarized (83)Kr
Overview
Authors
Affiliations
Hyperpolarized (83)Kr has previously been demonstrated to enable MRI contrast that is sensitive to the chemical composition of the surface in a porous model system. Methodological advances have lead to a substantial increase in the (83)Kr hyperpolarization and the resulting signal intensity. Using the improved methodology for spin exchange optical pumping of isotopically enriched (83)Kr, internal anatomical details of ex vivo rodent lung were resolved with hyperpolarized (83)Kr MRI after krypton inhalation. Different (83)Kr relaxation times were found between the main bronchi and the parenchymal regions in ex vivo rat lungs. The T1 weighted hyperpolarized (83)Kr MRI provided a first demonstration of surface quadrupolar relaxation (SQUARE) pulmonary MRI contrast.
Multi-nuclear magnetic resonance spectroscopy: state of the art and future directions.
Wei Y, Yang C, Jiang H, Li Q, Che F, Wan S Insights Imaging. 2022; 13(1):135.
PMID: 35976510 PMC: 9382599. DOI: 10.1186/s13244-022-01262-z.
Hyperpolarized gas MRI in pulmonology.
Kern A, Vogel-Claussen J Br J Radiol. 2017; 91(1084):20170647.
PMID: 29271239 PMC: 5965996. DOI: 10.1259/bjr.20170647.
NMR Hyperpolarization Techniques of Gases.
Barskiy D, Coffey A, Nikolaou P, Mikhaylov D, Goodson B, Branca R Chemistry. 2016; 23(4):725-751.
PMID: 27711999 PMC: 5462469. DOI: 10.1002/chem.201603884.
Rogers N, Hill-Casey F, Stupic K, Six J, Lesbats C, Rigby S Proc Natl Acad Sci U S A. 2016; 113(12):3164-8.
PMID: 26961001 PMC: 4812722. DOI: 10.1073/pnas.1600379113.
Hyperpolarized 83Kr magnetic resonance imaging of alveolar degradation in a rat model of emphysema.
Lilburn D, Lesbats C, Six J, Dubuis E, Yew-Booth L, Shaw D J R Soc Interface. 2015; 12(107).
PMID: 25994296 PMC: 4587540. DOI: 10.1098/rsif.2015.0192.