PARTS OF THE CATHETER IN THE FORM OF VERY SMALL BANDS OF PLATINIUM ON GOLD. THESE BANDS WHICH TYPICALLY MEASURES 0.030 INCHES IN DIAMETER AND 0.051 INCHES IN LENGHT ARE MOUNTED ON THE CATHETER AND USED TO MONITOR POSITION OF THE CATHETER IN THE BODY USING X-RAYS

GIR 1 AND 6, TEXT TO 9018 NOTE 2b TO CHAPTER 90