Abstract #1614
Robust automated Navigator tracker positioning for MRI liver scans
Takao Goto 1 , Shiro Ozaki 2 , Koji Uchida 3 , Hajime Kitagaki 3 , and Hiroyuki Kabasawa 1
1
Global MR Applications and Workflow, GE
Healthcare, Hino-shi, Tokyo, Japan,
2
Shimane
University Hospital, Izumo-shi, Shimane, Japan,
3
Department
of Radiology, Shimane University Faculty of Medicine,
Izumo-shi, Shimane, Japan
We present a robust method for automated positioning of
a Navigator tracker for MRI liver scans. Our method
detects the dome peak of the liver and uses it for
Navigator tracker positioning. We used AdaBoost to
extract liver dome shape following detection of the
edges close to the liver dome and identify the dome
peak. During application of our method to 118 volunteers
and 53 patients, the tracker did not show any
significant mistakes and performed slice tracking
successfully. We expect our practical approach to assist
the scanning operator and improve workflow.
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