Two-site exchange revisited: a new method for extracting exchange parameters in biological systems.
Two-site exchange revisited: a new method for extracting exchange parameters in biological systems.
复制标题
重新审视两点交换:一种提取生物系统中交换参数的新方法。
DOI:
10.1016/s0006-3495(89)82797-3
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发表时间:
1989
影响因子:
3.4
通讯作者:
Jolesz,FA
中科院分区:
文献类型:
--
作者:
Mulkern,RV;Bleier,AR;Adzamli,IK;Spencer,RG;Sandor,T;Jolesz,FA
A new analysis is presented which links real volume fractions, relaxation rates, and intracompartmental exchange rates directly with apparent volume fractions and relaxation rates obtained from biexponential fits of transverse magnetization decay curves. The analysis differs from previous methods in that measurements from two paramagnetic doping levels are used to close the two-site exchange equations. Both the new method and one previously described by Herbst and Goldstein (HG) have been applied to paramagnetically doped whole-blood data sets. Significant differences in the calculated exchange parameters are found between the two methods. A small dependence of the intracellular relaxation rate on extracellular paramagnetic agent concentration, assumed nonexistent with the HG method, is inferred from the new analysis. The analysis was also applied to published data on perfused rat hearts, and we obtained a limited assessment of two-site exchange in this system.
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影响因子:
3.3
作者:
G. Caines;C. Morgan;R. C. Long;J. Goldstein
通讯作者:
J. Goldstein
DOI:
--
发表时间:
1978
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
T. Conlon;R. Outhred
通讯作者:
R. Outhred
DOI:
--
发表时间:
1984
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
M. D. Herbst;J. Goldstein
通讯作者:
J. Goldstein
影响因子:
3.4
作者:
H. Naritomi;M. Kanashiro;M. Sasaki;Y. Kuribayashi;T. Sawada
通讯作者:
T. Sawada
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
M. D. Herbst;J. Goldstein
通讯作者:
J. Goldstein