Tito Körner1, Stefan Wampl1, Marcos Wolf1, Martin Meyerspeer1, Maxim Zaitsev1,2, Wolfgang Birkfellner1, and Albrecht Schmid1
1High Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 2Medical Physics, Department of Radiology, University Medical Center Freiburg, Freiburg, Germany
1High Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 2Medical Physics, Department of Radiology, University Medical Center Freiburg, Freiburg, Germany
A human torso shaped phantom capeable of simulating respiratory motion of a left ventricle phantom including simulated blood flow was constructed. A tracking algorithm was evaluated using the phantom showing good agreement with data from an external sensor.
Position data of the left ventricle phantom during motion is shown. The graph indicates good agreement between data of the tracking algorithm (orange line) [7] and from the external motion sensor (MPT motion tracking system, Metria Innovation) (blue line) [9].
The anthropomorphically shaped torso phantom 1 and a 3D positioning table 5 are mounted on a base plate 7. On top of the table a pneumatic stepper 4, supplied with compressed air 6 is positioned. At the tip of the stepper rack a left ventricle phantom 2 is mounted and connected to a water supply via water hoses with 8 mm inner diameter.