@misc{gauldie2010patent,
  title = "Determining a viewpoint for navigating a virtual camera through a biological object with a lumen",
  author = "David Gauldie and David Mayne and Swati Mital and Tom Doel and Kristopher Cruickshank",
  year = "2010",
  month = "dec~14",
  note = "US Patent 7,853,058",
}