| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To sufficiently suppress a blood flow signal, in a magnetic resonance apparatus applying gradient pulses. <P>SOLUTION: This magnetic resonance apparatus applies the positive gradient pulses G<SB POS="POST">11</SB>-G<SB POS="POST">31</SB>in respective sub-periods B<SB POS="POST">1</SB>-B<SB POS="POST">3</SB>of a period B wherein the collection of data is not performed. Though each of the positive gradient pulses G<SB POS="POST">11</SB>-G<SB POS="POST">31</SB>has an equal area S, the positive gradient pulses G<SB POS="POST">11</SB>-G<SB POS="POST">31</SB>are apart from an RF pulse by different timesΔt<SB POS="POST">11</SB>-Δt<SB POS="POST">31</SB>. Because each of the positive gradient pulses G<SB POS="POST">11</SB>-G<SB POS="POST">31</SB>has the equal area S, the magnetic resonance apparatus can make a static tissue a high signal. Because the timesΔt<SB POS="POST">11</SB>-Δt<SB POS="POST">31</SB>of the positive gradient pulses G<SB POS="POST">11</SB>-G<SB POS="POST">31</SB>vary, the magnetic resonance apparatus can make a blood flow a low signal. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
