If you could image how the heart is moving, you would know a lot about its function.

如果你对心脏进行动态造影,你就会了解它的很多功能了

耶鲁公开课 - 生物医学工程探索课程节选

Rather than by forming an image or a picture you put electrodes on the surface of the body and measure the electrical potential as a function of position on the body.

它并不对人进行直接的造影,而是将电极放到身体表面,通过测量该位置电势能,表征该部位的生理状态

耶鲁公开课 - 生物医学工程探索课程节选