Non-radiological technique for three-dimensional imaging of endoscopes

Lancet. 1993 Mar 20;341(8847):719-22. doi: 10.1016/0140-6736(93)90487-2.


A novel system is described which images in three dimensions, the total configuration of a colonoscope without the use of conventional radiological techniques. A low intensity magnetic field is used in conjunction with a miniature inductive sensor. The system intrinsically safe and it is potentially inexpensive and capable of being used in a normal hospital environment. Clinical trials are described in which the system is validated in terms of its suitability for the application. Magnetic and conventional X-ray images obtained ex vivo with the endoscope held in various configurations and comparisons in the patients confirm the practical applicability of the new system.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Colonoscopes*
  • Colonoscopy / methods
  • Diagnostic Imaging / instrumentation*
  • Diagnostic Imaging / methods
  • Fluoroscopy
  • Humans
  • Image Processing, Computer-Assisted
  • Magnetics*