Since 1993,we hnd examined the dB and GS of caroliac structure ultrasound image by multi-function ultra-sound quantity diagnosis system in type QR-1,which was researched and devoloped by us.

• 自1993年以来.；我们用自制的QR-I型多功能超声定量诊断仪；测定心脏结构超声图象的分贝(dB)、灰阶值(GS)。