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Phase-cycled steady-state free precession imaging

机译:相周期稳态自由进动成像

摘要

A system includes applying, to patient tissue, a first imaging sequence comprising first balanced gradient pulse trains and RF pulses, where phases of successive RF pulses in the first imaging sequence differ by a first pulse phase increment, detecting first signals emitted from the patient tissue in response to the first imaging sequence, and to generate a first image based on the first signals, applying, to the patient tissue, a second imaging sequence comprising second balanced gradient pulse trains and RF pulses, where phases of successive RF pulses in the second imaging sequence differ by a second pulse phase increment different from the first pulse phase increment, detecting second signals emitted from the patient tissue in response to the second imaging sequence, and to generate a second image based on the second signals, applying motion-correction processing to the first image to generate a first motion-corrected image, applying motion-correction processing to the second image to generate a second motion-corrected image, and generating a composite image based on the first motion-corrected image and the second motion-corrected image.
机译:一种系统包括向患者组织施加包括第一平衡梯度脉冲序列和RF脉冲的第一成像序列,其中第一成像序列中的连续RF脉冲的相位相差第一脉冲相位增量,以检测从患者组织发出的第一信号响应于第一成像序列,并基于第一信号生成第一图像,向患者组织施加第二成像序列,该第二成像序列包括第二平衡梯度脉冲序列和RF脉冲,其中第二RF中的连续RF脉冲的相位成像序列相差第二脉冲相位增量,该第二脉冲相位增量与第一脉冲相位增量不同,检测响应于第二成像序列从患者组织发出的第二信号,并基于第二信号生成第二图像,并应用运动校正处理对第一图像生成第一运动校正图像,对第二图像进行运动校正处理生成第二运动校正图像,并基于第一运动校正图像和第二运动校正图像生成合成图像。

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