Improved detection of hepatic solid lesions with spin echo echo planar imaging ( SE EPI) T_2 weighted sequences 利用自旋回波平面成像T2加权序列提高肝脏实性病变的检出率
Objective To implement an arterial spin labeling ( ASL) technique that is feasible in routine examinations and to evaluate the clinical application of the method for imaging blood flow in cerebral ischemia. 目的评价动脉自旋标记技术(ASL)在慢性脑缺血灌注分析中的临床应用价值。
Adopts a simplified projection reconstruction technique, and obtains a 2D spin density imaging of the cross section of a mouse's tail. Discusses imaging errors of analogue sample and proposes some methods for limitation and correction of these errors. 采用简化的投影重建成象方法,获得了白鼠尾巴截面的二维自旋密度成象,分析了模拟样品成象的误差并提出了校正和减小某些误差的方法。
MRI is a Bio-magnetic spin imaging technology which can make all kinds of tomography images. It does not produce artifacts during the CT test, no ionizing radiation and without adverse effects on the human body. 磁共振成像是一种生物磁自旋成像技术,它可以直接作出各种体层图像,不会产生CT检测中的伪影,无电离辐射,对机体没有不良影响。