Contracting cardiomyocyte measured with quantitative phase imaging CordeiroChristine AbilezOscar GoetzGeorges GuptaTushar ZhugeYan SolgaardOlav PalankerDaniel 2017 Time-series of quantitative phase images showing a contracting cardiomyocyte at 50 fps. These images were acquired using diffraction phase microscopy. The colormap shows optical path difference measured between the cell and surrounding medium.