Echocardiography

In cardiology, echocardiography is "ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic."

Handheld echocardiography
Handheld echocardiography is an option. may help.

"The rapid acquisition of images by skilled ultrasonographers who use PME yields accurate assessments of  ejection fraction and some but not all cardiac structures in many  patients".