title: Ultrasound given shakedown for evaluating venous clots. Negative results too common for lower extremity scans.
authors.forename: D
authors.initials: D
authors.lastname: Krotz
mesh_terms: D000368:Aged; D003365:Costs and Cost Analysis; D006801:Humans; D007866:Leg / Q000098:blood supply; D008297:Male; D013924:Thrombophlebitis / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000191:economics / Q000706:statistics & numerical data