The present invention is directed to biological compounds derivatized so as to contain at least one perfluoro-t-butyl moiety for use in fluorine-19 NMR and/or MRI studies. The perfluoro-t-butyl (PFTB) moiety, ##STR1## is an excellent reporter group for fluorine-19 NMR/MRI. It is a source of nine magnetically equivalent fluorine nuclei which generate a single intense resonance for easy detection in spectroscopy or imaging. This signal is a sharp singlet, not split by neighboring nuclei or spread over a wide frequency range and eliminates any chance of ghost images which might arise from multiple resonances. These spectral properties ensure a maximum signal-to-noise ratio (S/N) for readily detecting this moiety. The foregoing allows either reduction in the concentration of the derivatized compound, ability to use MRI instruments with lower field strengths, a reduction in imaging times, or a combination of the foregoing as a result of this moiety producing a single, sharp, intense resonance. Additionally, the PFTB moiety-containing compounds may be utilized to determine oxygen concentration in aqueous solutions present in animate and inanimate objects.
本发明涉及
生物化合物的衍
生物,使其含有至少一个
全氟叔丁基基团,用于
氟-19核磁共振和/或MRI研究。
全氟叔丁基(PFTB)基团,##STR1##是
氟-19核磁共振/ MRI的优秀报告组。它是九个磁性等效的
氟核的来源,产生一个单一的强烈共振,易于在光谱学或成像中检测。这个信号是一个尖锐的单峰,不被邻近核分裂或分布在广泛的频率范围内,消除了任何可能由多个共振引起的幽灵图像的机会。这些光谱特性确保最大的信噪比(S / N)以便容易检测到这个基团。上述内容允许减少衍生化合物的浓度,使用磁场强度较低的MRI仪器,缩短成像时间,或上述内容的组合,因为这个基团产生一个单一、尖锐、强烈的共振。此外,含有PFTB基团的化合物可用于确定存在于有机体和无机体中的
水溶液中的
氧气浓度。