MRA used 3 dimensional timeofflightmethod and demonstrated the intra cranial arteries with the maximum intensity projection (MIP) of the source images.
MRA 检查采用三维时间飞跃法,对源图像做最大强度投影重建血管影像。
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In addition, the ion energy of HPIB is also measured with Thomson spectrometer and timeofflightmethod and the results agree with those measured with a pile of thin films.
Since the flight test data are oftime domain, it needs to be converted into frequency domain by FFT method. Then it can be used to identify the system.