At the Heart of the Matter: An Overview of Adult Echocardiography for the Non–Cardiac Sonographer - Pamela Mayer, 2015
Praxis für Kardiologie Bonn - Herzultraschall
File:Thrombus in the apex of left ventricle E00757 (CardioNetworks ECHOpedia).jpg - Wikimedia Commons
Sonographie: Herz – Wikibooks, Sammlung freier Lehr-, Sach- und Fachbücher
More than 10 years of speckle tracking echocardiography: Still a novel technique or a definite tool for clinical practice? - Cameli - 2019 - Echocardiography - Wiley Online Library
TheHeart.de - HNCM Diagnose?
Echokardiographie: Definition und Durchführung | Focus Arztsuche
File:Heart normal tte views.jpg - Wikimedia Commons