title: Real-time ultrasound guidance for percutaneous transluminal retrieval of nonopaque intravascular catheter fragment.
mesh_terms: D000293:Adolescent; D002404:Catheterization / Q000009:adverse effects*; D005547:Foreign Bodies / Q000628:therapy*; D006801:Humans; D008297:Male; D014463:Ultrasonography; D014682:Vena Cava, Inferior