Volume 16, Issue 6

In magnetic resonance imaging (MRI), spatial discrimination is usually achieved with selective excitation and/or Fourier encoding. While these approaches are favorable in most situations, it is sometimes desirable to have an approach that takes advantage of both selective excitation and Fourier encoding. Here, the authors describe the theory and experimental results of a new technique, which they ...

在磁共振成像（MRI）中，空间分辨通常通过选择性激发和/或傅里叶编码实现。虽然这些方法在大多数情况下是有利的，但有时需要一种兼具选择性激发和傅里叶编码优点的方法。本文作者描述了一种新技术的理论和实验结果，他们称之为...

A new pulse-echo imaging technique for close near-field applications is proposed. Based on the theory developed for the continuous-wave automatic focusing technique (CWAFT), it uses instead, a frequency-domain phase compensation through a convolutional mechanism. In addition, the scanned frequencies of the transmitted CW signals are sent simultaneously in a pulse that is used for the data acquisit...

提出了一种用于近距离近场应用的新型脉冲回波成像技术。基于连续波自动聚焦技术（CWAFT）的理论，它转而通过卷积机制使用频域相位补偿。此外，发射的连续波信号的扫描频率同时以脉冲形式发送，用于数据采集...