Zobrazeno 1 - 10
of 17
pro vyhledávání: '"L W, Hedlund"'
Publikováno v:
Magnetic resonance in medicine. 45(3)
Using in vivo magnetic resonance microscopy, registered (1)H and hyperpolarized (3)He images of the rat lung were obtained with a resolution of 0.098 x 0.098 x 0.469 mm (4.5 x 10(-3) mm(3)). The requisite stability and SNR was achieved through an int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::13f9537785f6ec14ac280c9c2c722bb4
https://pubmed.ncbi.nlm.nih.gov/11241691
https://pubmed.ncbi.nlm.nih.gov/11241691
Publikováno v:
Magnetic resonance in medicine. 45(3)
Hyperpolarized (3)He spin-lattice relaxation was investigated in the guinea pig lung using spectroscopy and imaging techniques with a repetitive RF pulse series. T(1) was dominated by interactions with oxygen and was used to measure the alveolar O(2)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5c534e206a45186268af2bbf744c75d4
https://pubmed.ncbi.nlm.nih.gov/11241699
https://pubmed.ncbi.nlm.nih.gov/11241699
Publikováno v:
NMR in biomedicine. 13(4)
Hyperpolarized helium (HP (3)He) is useful for direct MR imaging of the gas spaces of small animal lungs. Previously, breaths of 100% HP (3)He were alternated with breaths of air to maximize helium signal in the lungs and to minimize the depolarizing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::17b459707742c5950be819ac3077ce76
https://pubmed.ncbi.nlm.nih.gov/10867697
https://pubmed.ncbi.nlm.nih.gov/10867697
Publikováno v:
Magnetic resonance in medicine. 42(4)
In imaging of hyperpolarized noble gases, a knowledge of the diffusion coefficient (D) is important both as a contrast mechanism and in the design of pulse sequences. We have made diffusion coefficient maps of both hyperpolarized (3)He and (129)Xe in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::578923099ecff1d023beb6cc43f123b2
https://pubmed.ncbi.nlm.nih.gov/10502761
https://pubmed.ncbi.nlm.nih.gov/10502761
Autor:
X J, Chen, H E, Möller, M S, Chawla, G P, Cofer, B, Driehuys, L W, Hedlund, J R, MacFall, G A, Johnson
Publikováno v:
Magnetic resonance in medicine. 42(4)
The transverse relaxation time, T *(2), of hyperpolarized (HP) gas in the lung in vivo is an important parameter for pulse sequence optimization and image contrast. We obtained T *(2) maps of HP (3)He and (129)Xe in guinea pig lungs (n = 17) and in h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c76af0534a98ea44fa42cd0908e2c28a
https://pubmed.ncbi.nlm.nih.gov/10502762
https://pubmed.ncbi.nlm.nih.gov/10502762
Publikováno v:
Regional anesthesia and pain medicine. 24(4)
Pathophysiologic mechanisms underlying persistent neurologic deficits after continuous spinal anesthesia using hyperbaric 5% lidocaine are still not well understood. It has been suggested that high-dose intrathecal lidocaine induces irreversible cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e7f33e323e5a24a2bbc5c64e644f79e1
https://pubmed.ncbi.nlm.nih.gov/10445769
https://pubmed.ncbi.nlm.nih.gov/10445769
Publikováno v:
Magnetic resonance in medicine. 41(5)
Hyperpolarized (HP) 129Xe can be dissolved in biologically compatible lipid emulsions while maintaining sufficient polarization for in vivo vascular imaging. For xenon in Intralipid 30%, in vitro spectroscopy at 2 T yielded a chemical shift of 197 +/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::8076185f0daebd86cc38fee3b0791678
https://pubmed.ncbi.nlm.nih.gov/10332890
https://pubmed.ncbi.nlm.nih.gov/10332890
Autor:
H E, Möller, X J, Chen, M S, Chawla, G P, Cofer, B, Driehuys, L W, Hedlund, S A, Suddarth, G A, Johnson
Publikováno v:
Magnetic resonance in medicine. 41(4)
Three-dimensional magnetic resonance images of the guinea pig lung were acquired in vivo using hyperpolarized (HP) noble gases and radial projection encoding (PE). Results obtained with 3He (voxel size 17 microl) demonstrated high image quality showi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::92f1f72d55ed486370e14b31a6eaa5d0
https://pubmed.ncbi.nlm.nih.gov/10332857
https://pubmed.ncbi.nlm.nih.gov/10332857
Autor:
M, Viallon, G P, Cofer, S A, Suddarth, H E, Möller, X J, Chen, M S, Chawla, L W, Hedlund, Y, Crémillieux, G A, Johnson
Publikováno v:
Magnetic resonance in medicine. 41(4)
A new strategy designed to provide functional magnetic resonance images of the lung in small animals at microscopic resolution using hyperpolarized 3He is described. The pulse sequence is based on a combination of radial acquisition (RA) and CINE tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::80f235434f7f6f6e5b6cac1b77b93621
https://pubmed.ncbi.nlm.nih.gov/10332855
https://pubmed.ncbi.nlm.nih.gov/10332855
Autor:
J R, Miller, S E, Hurlston, Q Y, Ma, D W, Face, D J, Kountz, J R, MacFall, L W, Hedlund, G A, Johnson
Publikováno v:
Magnetic resonance in medicine. 41(1)
The use of a high-temperature superconducting probe for in vivo magnetic resonance microscopy at 2 T is described. To evaluate the performance of the probe, a series of SNR comparisons are carried out. The SNR increased by a factor of 3.7 compared wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3ca44dc3e2aef44a1b882e54a3286642
https://pubmed.ncbi.nlm.nih.gov/10025613
https://pubmed.ncbi.nlm.nih.gov/10025613