Seldinger technique

The initial puncture is with a sharp instrument, and this may lead to hemorrhage or perforation of the organ in question.

[2] The desired vessel or cavity is punctured with a sharp hollow needle, with ultrasound guidance if necessary.

[3] Prior to the description of the Seldinger technique, sharp trocars were used to create lumens through which devices could be passed.

[4] However, with the introduction of the Seldinger technique, angiography became a relatively risk-free procedure, and the field of interventional radiology blossomed.

Building on the work of Seldinger, Charles Dotter and Andreas Gruentzig developed angioplasty.