OPTIMIZED GRADIENT WAVE-FORMS FOR SPIRAL SCANNING

被引：77

作者：

KING, KF ^{[1
]}

FOO, TKF ^{[1
]}

CRAWFORD, CR ^{[1
]}

机构：

[1] ANALOG CORP,PEABODY,MA

来源：

MAGNETIC RESONANCE IN MEDICINE | 1995年 / 34卷 / 02期

关键词：

SPIRAL SCANNING; FAST IMAGING; MAGNETIC RESONANCE IMAGING;

D O I：

10.1002/mrm.1910340205

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Spiral scanning gradient waveforms can be optimized with respect to blurring from off-resonance effects by minimizing the readout time. This is achieved by maximizing the gradient amplitude during the scan so that the edge of k-space is reached as quickly as possible. Gradient hardware constraints are incorporated by considering a circuit model for the gradient coil and amplifier. The optimized gradient waveforms are determined by a set of coupled differential equations. The resulting solutions have shorter readout time than solutions that do not consider the circuit model.

引用

页码：156 / 160

页数：5

共 16 条

[1] HIGH-SPEED SPIRAL-SCAN ECHO PLANAR NMR IMAGING .1. [J].