平行成像加速参数的自动优化

• Format: Patent
• Language: Chinese
• Published: 27.11.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

种平行磁共振成像系统(1)包括：具有多个线圈元件的至少个射频(RF)线圈(10，12)、智能选择单元(24)、平行成像参数单元(28)以及序列控制(16)。智能选择单元(24)根据利用所述至少个RF线圈的对对象的预扫描或先前扫描，构建(60)信号图和基于不同的减小因子集合的多个噪声图。平行成像参数单元(28)选择包括最高信噪比(SNR)噪声图相对应的减小因子的集合。序列控制(16)基于所选择的减小因子来执行对所述对象的磁共振成像扫描。 A parallel magnetic resonance imaging system (1) includes at least one radio frequency (RF) coil (10, 12) with a plurality of coil elements, a smart select unit (24), a parallel imaging parameter unit (28), and a sequence control (16). The smart select unit (24), from a pre-scan or prior scan of a subject with the at least one RF coil, constructs (60) a signal map and a plurality of noise maps based on different sets of reduction factors. The parallel imaging parameter unit (28) selects a set of reduction factors corresponding to a noise map which includes a highest signal-to-noise ratio (SNR). The sequence control (16) performs a magnetic resonance imaging scan of the subject based on the selected reduction factors.