TY - RPRT TI - An analogue echogram range gate tracker for clinical echocardiography. AU - M L Petrovick AU - G S Malindzak AU - E D Haak PY - 1979 DO - 10.1007/bf02225468 UR - https://pubmed.ncbi.nlm.nih.gov/548571/ ID - 548571 ER -