A method to estimate cardiac volume by two-dimensional echocardiograms recorded from one extracorporeal point.

This paper presents a method for estimating the volume of a cardiac region from its oblique sectional images recorded with a sector scanner. The probe of the scanner is attached to the chest wall and an ultrasonic beam is cast from a fixed intercostal space. In a previous paper a method of calculation for the above recording technique was reported. The present method is superior to the previous one because it minimizes calculation error and is applicable to organs of intricate shape.