Shellock F G, Schatz C J, Julien P M, Silverman J M, Steinberg F, Foo T K, Hopp M L, Westbrook P R
Tower Magnetic Imaging, Los Angeles, CA.
J Magn Reson Imaging. 1992 Jan-Feb;2(1):103-7. doi: 10.1002/jmri.1880020120.
Dynamic magnetic resonance (MR) imaging of the upper airway was not possible previously because of poor temporal resolution. Recently, a rapid technique has been developed that provides the means to obtain multiple images at different section locations with sufficient image quality and temporal resolution to allow a comprehensive, dynamic study of the upper airway. The authors describe an ultrafast spoiled GRASS (gradient-recalled acquisition in the steady state) pulse sequence for dynamic studies of the upper airway. The authors believe that this procedure has potential for identifying and characterizing upper airway abnormalities such as nonfixed occlusions and/or narrowings that may exist in patients with obstructive sleep apnea.
由于时间分辨率较差，以前无法对上气道进行动态磁共振成像。最近，已经开发出一种快速技术，该技术能够在不同的截面位置获取多个具有足够图像质量和时间分辨率的图像，从而对上气道进行全面的动态研究。作者描述了一种用于上气道动态研究的超快扰相梯度回波（稳态下的梯度回波采集）脉冲序列。作者认为，该方法有可能识别和表征上气道异常，如阻塞性睡眠呼吸暂停患者可能存在的非固定性阻塞和/或狭窄。
