the study of 219 consecutive cases of pulmonary embolism shows the advantage of venous ultrasonic tomography which , alone , enables to screen the embolic focus in 10 % of the cases , either because the phlebographic data are insufficient ( 5 % ) , or because the embolic focus can not be reached with phlebography ( 5 % ) , especially in deep femoral and internal saphenous thromboses .
C0034065
pulmonary embolism
C0013922
embolic