MR of hemorrhage: a new approach.
MR of hemorrhage: a new approach.
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发表时间：
1986-09
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通讯作者：
R. Edelman;K. Johnson;R. Buxton;G. Shoukimas;B. Rosen;K. Davis;T. Brady
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作者：
R. Edelman;K. Johnson;R. Buxton;G. Shoukimas;B. Rosen;K. Davis;T. Brady
使用修改的部分饱和(PS)脉冲序列，我们开发了一种磁共振方法，允许在短短10秒内获取头部和身体的高T1和T2加权图像。6例急性和亚急性出血患者在0.6T下获得的PS图像显示，出血性病变的信号强度显著降低。在常规的T1和T2加权自旋回波(SE)图像上，这种与整体磁化率变化有关的影响要么很小，要么没有。我们的结果表明，不需要高场系统来成像急性和亚急性出血。
Using a modification of the partial saturation (PS) pulse sequence, we developed an MR method that permits the acquisition of highly T1- and T2-weighted images of the head and body in as little as 10 sec. The PS images, which were acquired at 0.6 T in a series of six patients with acute and subacute hemorrhage, showed a striking reduction in the signal intensity of hemorrhagic lesions. This effect, which is related to bulk magnetic susceptibility variations, was either minimal or absent on conventional T1- and T2-weighted spin-echo (SE) images. Our results suggest that high-field systems are not needed in order to image acute and subacute hemorrhage.