Infrared patient positioning for stereotactic radiosurgery of extracranial tumors

Lawrence T. Wang, Timothy D. Solberg, Paul M. Medin, Rex Boone

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


We report on a novel, non-invasive patient positioning system for radiosurgery of extracranial tumors. The system consisted of infrared cameras and reflective markers attached to the skin. Because localization accuracy is critical in radiosurgery, we performed a theoretical analysis of the accuracy of the system. A computer simulation program modeled errors in marker position, and was used to predict errors in targeting and study methods for minimizing errors. The use of redundant markers improved the overall accuracy of targeting. Experimental data was collected using a rigid torso phantom and correlated with theoretical results. The accuracy of the infrared system was compared with existing systems.

Original languageEnglish (US)
Pages (from-to)101-111
Number of pages11
JournalComputers in Biology and Medicine
Issue number2
StatePublished - 2001


  • Extracranial tumors
  • Infrared instrumentation
  • Patient positioning
  • Radiosurgery
  • Stereotaxic

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Informatics


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