脊椎；化学位移成像；同相位；反相位；磁共振成像；信号强度。

Magnetic resonance imaging; in phase; Opposed phase; Signal intensity; VertebraL; Chemical shift.

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结论在化学位移成像图像上，正常椎体信号强度下降指数会呈现出一定程度的变化。

Conclusion there was some variability in the loss of signal intensity according to location (spinal segment), and there were associations between decreases in signal intensity and age.

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结论在化学位移成像图像上，正常椎体信号强度下降指数会呈现出一定程度的变化。

Conclusion there was some variability in the loss of signal intensity according to location (spinal segment), and there were associations between decreases in signal intensity and age.

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