Roger Jason Stafford1, Florian Maier2,
Axel Joachim Krafft2, Michael Bock2, Axel Winkel3,
Kamran Ahrar4
1Department of Imaging Physics, The
University of Texas M. D. Anderson Cancer Center , Houston, TX, United
States; 2Department of Medical Physics in Radiology, Cancer
Research Center Heidelberg (DKFZ), Heidelberg, Germany; 3Invivo
GMBH, Schwerin, Germany; 4Department of Diagnostic Radiology, The
University of Texas M. D. Anderson Cancer Center, Houston, TX, United States
Real-time
MR-guidance of percutaneous procedures may benefit from methods for
automatically adjusting the scan prescription to the needle trajectory, as
well as visual delineation of the trajectory, in real-time. In this work, the feasibility of using a
phase only cross correlation tracking algorithm for automated identification
of a contrast filled needle sleeve with real-time adjustment of the scan
prescription for continuous delineation of the needle trajectory during
manipulation was investigated in phantom and patients for MR-guidance of
percutaneous procedures in a closed bore 1.5T clinical scanner.
Keywords