公开(公告)号：US08134364B1

公开(公告)日：2012-03-13

申请号：US12799548

申请日：2010-04-27

申请人： Thomas Datzikas

发明人： Thomas Datzikas

IPC分类号： G01V3/00

CPC分类号： G01R33/4833

摘要： A method and apparatus to increase the effectiveness of a Magnetic Resonance Imaging (MRI) device by increasing the signal-to-noise ratio, allowing thinner slice thicknesses, and allowing more contiguous slices. In an MRI device, a patient is subjected to a constant magnetic field, and the RF pulses are used to excite the atoms in the body of the patient. The atoms release a corresponding RF signal when the atoms relax, which can be measured and mapped into a visual display. The RF pulses used to excite the atoms in the body of the patient use a modified Bessel function. The Bessel function having an approximately rectangular waveform in the frequency domain increases the signal-to-noise ratio, allows thinner slice thicknesses, and allows more contiguous slices, resulting in a better MR image and a more efficient MRI apparatus.

摘要翻译： 通过增加信噪比来增加磁共振成像（MRI）装置的有效性的方法和装置，允许更薄的切片厚度，并允许更连续的切片。 在MRI装置中，患者受到恒定的磁场，并且RF脉冲用于激发患者体内的原子。 当原子松弛时，原子释放相应的RF信号，这可以被测量并映射到视觉显示中。 用于激发患者体内的原子的RF脉冲使用改进的贝塞尔函数。 在频域中具有近似矩形波形的贝塞尔函数增加了信噪比，允许更薄的切片厚度，并且允许更连续的切片，导致更好的MR图像和更有效的MRI装置。