The primitive imaging obtained by nuclear medical instrument can not provide right information without correction.
核医学仪器采集的图像如不经过校正，则不能提供正确的信息。
2
Because of the character of calculating position of nuclear medical instrument, linearity and uniformity are not satisfactory in the primitive imaging.
由于核医学仪器在计算位置信息时的特点，采集的原始图像总会在线性和均匀性上出现偏差。
3
The developing trend that digital instrument and control( I&C ) system will supplant traditional analog I&C system in nuclear power plant is emphasized.