Chen, Thomas Kuiran Improvement of freehand ultrasound calibration accuracy using the elevation beamwidth profile. [electronic resource] - Ultrasound in medicine & biology Aug 2011 - 1314-26 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1879-291X Standard No.: 10.1016/j.ultrasmedbio.2011.05.004 doi Subjects--Topical Terms: CalibrationImaging, Three-Dimensional--instrumentationLeast-Squares AnalysisOperating RoomsPhantoms, ImagingUltrasonography--instrumentation