Needle insertion in CT scanner with image overlay -cadaver studies

Gabor Fichtinger, Anton Deguet, Ken Masamune, Emese Balogh, Gregory Fischer, Herve Mathieu, Russell H. Taylor, Laura M. Fayad, S. James Zinreich

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


An image overlay system is presented to assist needle placement in conventional CT scanners. The device consists of a flat LCD display and a half mirror and is mounted on the gantry. Looking at the patient through the mirror, the CT image appears to be floating inside the patient with correct size and position, thereby providing the physician with two-dimensional "X-ray vision" to guide needle placement procedures. The physician inserts the needle following the optimal path identified in the CT image that is rendered on the LCD and thereby reflected in the mirror. The system promises to increase needle placement accuracy and also to reduce X-ray dose, patient discomfort, and procedure time by eliminating faulty insertion attempts. We report cadaver experiments in several clinical applications with a clinically applicable device.

Original languageEnglish (US)
Pages (from-to)795-803
Number of pages9
JournalLecture Notes in Computer Science
Issue number1 PART 2
StatePublished - 2004
EventMedical Image Computing and Computer-Assisted Intervention, MICCAI 2004 - 7th International Conference, Proceedings - Saint-Malo, France
Duration: Sep 26 2004Sep 29 2004

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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