Hai-fan Hu

Learn More
A new method able to measure the concentration of oxygen in complex biological systems, including in vivo, has been developed using low-frequency EPR and newly characterized free radicals that are very sensitive to the concentration of oxygen. The free radicals (fusinite and lithium phthalocyanine) are very stable in tissues (for at least 150 days),(More)
MR signal intensities at 0.282 T were correlated with the pathological findings in 23 cases of spinal neurinoma. With T2-weighted images (SE-T2WI or RARE-T2WI), all the tumors displayed high signal intensities similar to that of cerebrospinal fluid, indicating long T2 values. It is shown that the long T2 values of neurinomas are caused not only by(More)
The concept of contrast, which now is an integral part of many magnetic resonance imaging studies, can be extended successfully to magnetic resonance spectroscopy. It involves the use of paramagnetic molecules whose distribution is restricted in some manner, thereby causing differential effects on the NMR spectra. As an illustrative example, the effects of(More)
  • 1