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Magnetic resonance coronary angiography

机译:磁共振冠状动脉造影

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Abstract: MR imaging was performed using a superconducting 1.5 Tesla Siemen's Magnetom SP whole body imaging system with a standard planar elliptical spine coil used as an rf receiver. The imaging sequence consisted of a gradient-echo sequence with incremented flip angle series and k-space segmentation such that 6 or 8 phase-encoding steps were acquired in rapid sequence, constituting one segment. Sixteen or 20 interleaved segments were acquired so as to complete the 120, 128, or 160 $MUL 256 matrix. A fat saturation pulse was applied prior to each segment so as to null signal from epicardial fat and thus enhance signal from coronary flow. A repetition time (TR) of 13 msec and an echo time (TE) of 8 msec were used with a slice thickness of 4 or 5 mm and 230 mm field-of-view (in-plane resolution of 1.4 - 1.9 mm $MUL 0.9 mm). All imaging was performed within a single breath-hold. !0
机译:摘要:MR成像是使用超导1.5 Tesla Siemen's Magnetom SP全身成像系统和标准平面椭圆脊柱线圈作为RF接收器进行的。成像序列由梯度回波序列(具有递增的翻转角序列和k空间分割)组成,因此可以快速序列获得6或8个相位编码步骤,构成一个片段。获取16个或20个交错的段,以完成120、128或160个$ MUL 256矩阵。在每个节段之前施加脂肪饱和脉冲,以使心外膜脂肪的信号无效,从而增强冠状动脉血流的信号。使用13毫秒的重复时间(TR)和8毫秒的回波时间(TE),且切片厚度为4或5毫米,视野范围为230毫米(面内分辨率为1.4-1.9毫米) 0.9毫米)。所有成像均在一次屏气内进行。 !0

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