【产品特点Key Features】
-直径 Diameter: 194.5 mm, 224.5 mm (含中圈凸缘 flange)
-对比单元由直径20mm记号球组成 Contrast cell, 20 mm ID spheres:
~ 含14个T1扩散球 14 spheres T1 spread (20ms-2s)
~ 含14个T2扩散球 14 spheresT2 spread (8ms-800ms)
~ 含14个质子密度球 spheres proton density
-体现所有关键要素的实际维度/位置精度 误差范围为+/-0.1mm
True dimensional/positional accuracy of 0.1 mm on all key elements
-三个带有洞/槽阵列的分辨率插件(孔径由1mm递减至0.4mm,间距1.2mm)
Three resolution insert with hole/slot arrays (hole dimensions from 1 mm down to 0.4 mm with 1.2 mm spacing)
-用于片选轮廓分析的楔子(两个80mm x 8mm的带有10度夹角的楔子)
Wedges for slice profiling (two 80 mm x 8mm wedges at a 10°angle)
-用于精确定位的物理及核磁共振钥匙
Physical and MR key to precisely determine phantom alignment
-物理及核磁共振可读的序列号 Physical and MR readable serial numbers
NIST-verified T1, T2, and dimensional properties
-提供公用软件 Public domain software available
定量核磁共振成像系统标准模体可对以下核磁共振成像系统指标进行评估:
-B1均匀性 B1 uniformity
-B0均匀性 B0 uniformity
-几何线性度 Geometric linearity
-梯度幅值 Gradient amplitude
-片选轮廓 Slice profile
-切片定位精度 Slice positioning accuracy
-标记点精确度 Landmark accuracy
-系统中心频率漂移(短持续时间) System center frequency drift (short time duration)
-分辨率 Resolution
-信噪比 SNR
-T1、T2及质子密度测量的准确性度和精密度
Accuracy and precision of T1, T2 and proton density measurements
美国核磁共振性能检测模体 qMRI定量核磁共振系统校准模体 HPD SP130型