This paper introduces the digital stopwatch designed by our lab for teaching and experiment of medical imaging specialty. Its design idea, principle and configuration are discussed in detail.

• 摘要针对医学影像放射专业的实验教学问题，介绍了本实验室自己研制的数字式计时秒表，对它的设计思想、原理、结构等进行了详细论述，分析比较了该仪表的性能特点。