Ключевые слова: 3d, background, book, cardiac, cardiology, care, check, checkup, clinical, concept, degree, device, diagnosis, doctor, education, equipment, exam, health, healthcare, healthy, heart, heartbeat, hospital, illustration, instrument, isolated, learning, library, measurement, medical, metal, pressure, profession, pulse, rendering, research, school, stack, stethoscope, student, study, test, tool, university, up, white,