@misc{oai:repo.qst.go.jp:00069334,
 author = {Kokuryo, Daisuke and et.al and 國領 大介},
 month = {May},
 note = {A target tracking technique using relative displacements of gravity points of cross sectional images of blood vessels was proposed to guide the ultrasound focus in the liver which moves with respiration. Experiments with healthy volunteer livers demonstrated that the average error of the target position estimation was within 3mm. The error was less than 4mm even with a position prediction process for considering time delay between the time points of position estimation and transducer setup. These results suggested that the proposed technique was sufficient for guiding the focus and hence the imaging slab position and orientation for the "self-reference" thermometry., ISMRM 16th Scientific Meeting & Exhibition},
 title = {Hot Spot Tracking for Focused Ultrasound Surgery of Liver using Filtered Venograpy},
 year = {2008}
}