Percutaneous puncture guided by ultrasonic multitransducer scanning.

A technique for percutaneous puncture guided by real-time scanning is described. By means of a special puncture adaptor fastened to one end of a multitransducer, a needle can be guided in the plane of scanning in an adjustable angle to the transducer front. By this technique, the puncture target as well as the needle can be monitored on the real-time image during the entire puncture procedure. The technique has been used for amniocentesis, fine needle biopsy of a renal mass, renal cyst puncture, and pericardiocentesis.