Yo TANIGUCHI,Tomoki AMEMIYA,Suguru YOKOSAWA,Toru SHIRAI,Hisaaki OCHI
申请号：
US16233154
公开号：
US20190227134A1
申请日:
2018.12.27
申请国别(地区):
US
年份:
2019
代理人:
摘要：
In a case where a subject parameter distribution is obtained using MRI, a magnetization transfer effect is suppressed such that the calculation accuracy of T1 and T2 of brain parenchyma can be improved and a variation in the T1 value of blood caused by the effect of blood flow can be reduced. In imaging for parameter estimation, a magnetization transfer effect is suppressed by using a high frequency magnetic field pulse having a narrow frequency band as an excitation pulse. In a case where the frequency band is narrow, the high frequency magnetic field pulse has a shape in which the excitation profile is similar to a Gaussian function. A rising portion of the shape is arranged in a field of view where the head is an imaging target.
