581. ... the injection of a contrast medium (usually iodine compound) via a flexible tube Subject(s): Cardiovascular DiseasesWorld Health Organization
582. [Miniature transmitter used to monitor heartbeats] Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
583. The sound of the dog's heartbeats is picked up by a microphone stuck to his fur Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
584. The passage of the dye through the blood vessels is recorded by two small photo-electric cells Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
585. Congenital malformations of the heart originate in the embryo Subject(s): Cardiovascular DiseasesWorld Health Organization
586. Dr. [Zdenek] Rychter produces his own tools for his very delicate operations Subject(s): Cardiovascular DiseasesEquipment and SuppliesWorld Health Organization
587. ... micro x-ray photographs of a chick embryo heart from 3rd to 11th day Subject(s): World Health Organization
588. ... studying blood circulation in the new-born Subject(s): Cardiovascular DiseasesWorld Health Organization
589. Stockholm's Karolinska hospital - this boy works a stationary bicycle while his heart is being tested for abnormalities Subject(s): Cardiovascular DiseasesNursesChildSwedenWorld Health Organization
590. The doctor takes throat swabs for laboratory examination Subject(s): NursesHealth EducationChildPhysiciansPhysical Examination