| 摘要 |
PURPOSE:To obtain the image only of a blood flow part only by one imaging, by differentiating the timing of the echo signal from a stationary part from that of the echo signal from the blood flow part. CONSTITUTION:A magnetic field and an RF pulse are generated to the subject placed under a static magnetic field of 5,000G according to the sequence shown by (a)-(f) to measure a signal. That is, an RF pulse 101 bringing down magnetization by 90 deg. under the application of a z-direction inclined magnetic field 102 to excite the spin in a desired slice. A non-linear inclined magnetic field is applied for t1msec and, after t2msec, a non-linear inclined magnetic field 104 is applied for t1msec. Then, a y-direction position encoding magnetic field 105 is applied and, next, an x-direction linear inclined magnetic field 106 is applied. At the same time, an NMR signal S is received. The measuring signal S is subjected to Fourier transform by a processing apparatus and an absolute value is taken to obtain an angiogram. |
