T2 effect of hemoglobin concentration: assessment with in vitro MR spectroscopy.

@article{Hayman1988T2EO,
  title={T2 effect of hemoglobin concentration: assessment with in vitro MR spectroscopy.},
  author={L. A. Hayman and Joseph J Ford and Katherine H. Taber and Abdus Saleem and Mary Ella Round and R. Nick Bryan},
  journal={Radiology},
  year={1988},
  volume={168 2},
  pages={489-91}
}
T2 values were measured at 0.23 and 4.7 T for deoxygenated blood samples (43%-73% O2 saturation) with hematocrits of 18%-100%. An increase in the hematocrit produced a marked reduction in T2 at both field strengths. Cell lysis did not abolish the T2 effect at either field strength. The authors conclude that the increase in hemoglobin concentration caused by formation of a retracted clot is a cause of the hypointense appearance of acute hemorrhage compared with brain on T2-weighted clinical… CONTINUE READING

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