Chandraratna, P A High-frequency ultrasound: determination of the lowest frequency required for cellular imaging and detection of myocardial disease. [electronic resource] - American heart journal Jan 1995 - 15-9 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0002-8703 Standard No.: 10.1016/0002-8703(95)90036-5 doi Subjects--Topical Terms: Cardiomyopathies--diagnostic imagingEchocardiography--instrumentationGraft Rejection--pathologyHeart Transplantation--pathologyHumansIn Vitro TechniquesMicroscopy--instrumentationMyocardium--cytologyReference ValuesTransducersUltrasonics