PURPOSE: To evaluate real-time biplanar tracking of a specially designed needle with magnetic resonance (MR) imaging guidance. MATERIALS AND METHODS: The needle is made of polyetheretherketone and has a miniature radio-frequency coil incorporated into the tip. Tracking software on two workstations is used to compute three-dimensional coordinates of the coil and to display the position as a moving symbol in two imaging planes. Validation of needle tracking was performed in a harvested human liver. T2-weighted fast spin-echo images were used to target a 1-cm cyst. Success of needle placement was confirmed with aspiration and with updated gradient-recalled-echo images. RESULTS: The cyst was successfully targeted from different approaches. Tracking procedures were monitored in real time simultaneously on two separate images. CONCLUSION: Real-time biplanar needle tracking may prove to be useful for both diagnostic and therapeutic interventional MR imaging procedures.
PURPOSE: To evaluate real-time biplanar tracking of a specially designed needle with magnetic resonance (MR) imaging guidance. MATERIALS AND METHODS: The needle is made of polyetheretherketone and has a miniature radio-frequency coil incorporated into the tip. Tracking software on two workstations is used to compute three-dimensional coordinates of the coil and to display the position as a moving symbol in two imaging planes. Validation of needle tracking was performed in a harvested human liver. T2-weighted fast spin-echo images were used to target a 1-cm cyst. Success of needle placement was confirmed with aspiration and with updated gradient-recalled-echo images. RESULTS: The cyst was successfully targeted from different approaches. Tracking procedures were monitored in real time simultaneously on two separate images. CONCLUSION: Real-time biplanar needle tracking may prove to be useful for both diagnostic and therapeutic interventional MR imaging procedures.
Authors: Christina E Saikus; Kanishka Ratnayaka; Israel M Barbash; Jessica H Colyer; Ozgur Kocaturk; Anthony Z Faranesh; Robert J Lederman Journal: J Magn Reson Imaging Date: 2011-11 Impact factor: 4.813
Authors: Matthew J Riffe; Stephen R Yutzy; Yun Jiang; Michael D Twieg; Colin J Blumenthal; Daniel P Hsu; Li Pan; Wesley D Gilson; Jeffrey L Sunshine; Christopher A Flask; Jeffrey L Duerk; Dean Nakamoto; Vikas Gulani; Mark A Griswold Journal: Magn Reson Med Date: 2013-07-30 Impact factor: 4.668
Authors: Jens Christian Rump; Martin Jonczyk; Christian Jürgen Seebauer; Florian Streitparth; Felix Victor Güttler; Ulf Karl-Martin Teichgräber; Bernd Hamm Journal: Int J Comput Assist Radiol Surg Date: 2011-03-17 Impact factor: 2.924