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Usefulness of a Percutaneous Transhepatic Coaxial Micropuncture Needle Technique in Patients with Nondilated Peripheral Intrahepatic Ducts

¹ Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA 19104.

OBJECTIVE. I sought to develop an efficacious transhepatic technique for localizing normal or minimally dilated biliary radicles using 25- to 27-gauge needles threaded through 21- to 22-gauge needles.

CONCLUSION. The micropuncture needle is a useful adjunct for performing transhepatic cholangiography in patients whose bile ducts are nondilated or in whom the standard transhepatic needle technique has failed.

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