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螺旋CT螺距的增加减少了数据采集时间,双源CT(DSCT)具有较高的时间分辨率,本研究评价这两种特性组合后的价值。所采用的双源CT配备容许螺距因子P=0.35~3.0的原装软件。测量层面灵敏度作为螺距的函数,来评估Z轴空间分辨率,采用结构周期性移
The increase of helical CT pitch reduces the data acquisition time, and the dual-source CT (DSCT) has a higher temporal resolution. This study evaluates the combination of these two properties. Dual-source CT used with the allowable pitch factor P = 0.35 ~ 3.0 original software. Measurement of layer sensitivity as a function of pitch to assess the spatial resolution of the Z axis, the use of structural periodic shift