Ludwig Boltzmann Institute for Lung Vascular Research 1 article published in JoVE Medicine Echocardiographic Measurement of Right Ventricular Diastolic Parameters in Mouse Bakytbek Egemnazarov1, Grazyna Kwapiszewska1,2, Leigh M. Marsh1 1Ludwig Boltzmann Institute for Lung Vascular Research, 2Department of Physiology, Otto Loewi Research Center, Medical University of Graz Here we describe and compare two positions for obtaining the apical four-chamber view in mice. These positions enable the quantification of the right ventricular function, provide comparable results, and can be used interchangeably.