RADIATION DETECTION CATHETER

摘要

A radiation detection catheter is particularly suitable for accurately detecting beta emitters in an in vivo environment to detect the presence of a radioactive therapeutic agent emitting beta radiation delivered locally to a portion of the coronary artery by inserting the catheter into the body through a blood vessel and maneuvered in to the coronary artery. The catheter has an elongated detector sensitive to beta radiation coupled to an optical fiber, and an in situ calibration system which improves the signal-to-noise performance of the catheter for detecting beta radiation.