Abstract #2341
Analysis of Three-dimensional Liver Deformation under Free Breathing based on Branching Structure of Potral Vein for MR-guided Focused Ultrasound Surgery
Tatsuhiko Matsumoto 1 , Etsuko Kumamoto 1,2 , Daisuke Kokuryo 3 , and Kagayaki Kuroda 4,5
1
Kobe university, Kobe, Hyogo, Japan,
2
Information
Science and Technology Center, Kobe, Japan,
3
Molecular
Imaging Center, National Institute of Radiological
Sciences, Chiba, Japan,
4
Tokai
University, Hiratsuka, Japan,
5
Kobe
International Frontier Medical Center, Kobe, Japan
Three-dimensional (3D) deformation of the liver under
free breathing was analyzed using branching structure of
portal veins. A series of sagittal, multi-slice fast
steady-state (FIESTA) images were acquired in a healthy
volunteerfs liver under slow-paced free respiration and
were reconstructed to isotropic volume data. Branching
points of the portal veins included in the volume were
extracted by using our in-house 3D image processing
software. The software-extracted branching points
exhibited that the liver constricts in right-left (RL)
direction for about 12 mm when came down to inferior
with maximum inhalation.
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