منابع مشابه
Electron spin echo studies of the copper complexes of conalbumin.
Electron spin echo envelope spectroscopy was used to probe the two metal binding sites of Cu(II)-conalbumin. The echo envelope spectrum of Cu(II)-conalbumin-oxalate, with metal ion at either one or both of the binding sites, contains lines arising from the interaction of the electron spin of Cu(II) with bound imidazole, demonstrating histidine ligation to the metal ion. The 13C superhyperfine i...
متن کاملFast spin-echo triple-echo dixon (fTED) technique for efficient T2-weighted water and fat imaging.
Previously published fast spin-echo (FSE) implementations of a Dixon method for water and fat separation all require multiple scans and thus a relatively long scan time. Further, the minimum echo spacing (esp), a time critical for FSE image quality and scan efficiency, often needs to be increased in order to bring about the required phase shift between the water and fat signals. This work propo...
متن کاملThree Echo Dixon Water-Fat Separation for Cardiac Black Blood Turbo Spin Echo Imaging
Introduction Turbo spin echo (TSE) sequences with black blood preparation pulses are an important component of cardiac MRI. It is commonly used for tissue characterization and anatomical assessment of the myocardium, e.g. for edema imaging aiming at the differentiation of acute from chronic myocardial infarction. TSE benefits from high SNR and the availability of good T1 or T2 weighting. So far...
متن کاملIntramembrane water associated with TOAC spin-labeled alamethicin: electron spin-echo envelope modulation by D2O.
Alamethicin is a 20-residue, hydrophobic, helical peptide, which forms voltage-sensitive ion channels in lipid membranes. The helicogenic, nitroxyl amino acid TOAC was substituted isosterically for Aib at residue positions 1, 8, or 16 in a F50/5 alamethicin analog to enable EPR studies. Electron spin-echo envelope modulation (ESEEM) spectroscopy was used to investigate the water exposure of TOA...
متن کاملFast Spin Echo Imaging
In conventional spin echo (SE) imaging, the longitudinal magnetization (that is generated by the presence of the main magnetic field, B0) is tipped into the transverse plane using a radiofrequency (RF) pulse that tips the magnetization 90 degrees. Once in the transverse plane, the magnetization rotates, or precesses, around the axis of the main magnetic field. As the transverse magnetization pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1972
ISSN: 0028-0836,1476-4687
DOI: 10.1038/235170a0