title: Cardiological investigations by the use of magnetic materials.
mesh_terms: D000790:Angiocardiography / Q000295:instrumentation*; D000818:Animals; D002932:Cineangiography / Q000295:instrumentation; D004285:Dogs; D006352:Heart Ventricles; D007501:Iron; D008280:Magnetics
chemical_list: D007501:Iron