发明名称 |
System and method for fully phase-encoded magnetic resonance imaging using multiband radio frequency excitation |
摘要 |
Systems and methods for simultaneously acquiring three-dimensional data from multiple different frequency bins with a magnetic resonance imaging (“MRI”) system, and without frequency-encoding gradients, are provided. A multiband radio frequency (“RF”) pulse is used to excite spins associated with multiple different resonance frequency offsets, and a fully phase-encoded acquisition is used to acquire data, which may be spectrally-resolved data, from magnetic resonance signals formed in response to the multiband RF pulse. |
申请公布号 |
US9594134(B2) |
申请公布日期 |
2017.03.14 |
申请号 |
US201414161308 |
申请日期 |
2014.01.22 |
申请人 |
Wisconsin Alumni Research Foundation |
发明人 |
Smith Matthew Robert;Artz Nathan Samuel;Reeder Scott Brian |
分类号 |
G01V3/00;G01R33/44;G01R33/483;G01R33/565;G01R33/48 |
主分类号 |
G01V3/00 |
代理机构 |
Quarles & Brady, LLP |
代理人 |
Quarles & Brady, LLP |
主权项 |
1. A method for simultaneously acquiring three-dimensional data from multiple different resonance frequency offsets with a magnetic resonance imaging system, the steps of the method comprising:
directing the MRI system to:
a) produce a multiband radio frequency (RF) pulse that excites spins associated with each of a plurality of different resonance frequency offsets;b) establish a first phase-encoding gradient along a first direction;c) establish a second phase-encoding gradient along a second direction that is orthogonal to the first direction;d) establish a third phase-encoding gradient along a third direction that is orthogonal to the first direction and the second direction;e) acquire data at a point in k-space that is defined by the first, second, and third phase-encoding gradients by sampling a magnetic resonance signal during a period of time in which no magnetic field gradients are established by the MRI; and wherein the plurality of different resonance frequency offsets includes an on-resonance frequency and at least one off-resonance frequency. |
地址 |
Madison WI US |