Frameless stereotaxic integration of CT imaging data: Accuracy and initial applications

S. J. Zinreich, S. A. Tebo, D. M. Long, H. Brem, D. E. Mattox, M. E. Loury, C. A. Vander Kolk, W. M. Koch, D. W. Kennedy, R. N. Bryan

Research output: Contribution to journalArticle

Abstract

To evaluate the spatial accuracy of a rapid interactive method of transferring computed tomographic (CT) information between its display on a computer screen to its source (test object, operating field), a multidimensional computer combined with a six-jointed position-sensing mechanical arm was tested with a Plexiglas model consisting of 50 rods of varied height and known location, a plastic replica of the skull, and, subsequently, three patients. The median error value between image and real location was 1-2 mm (P > .95), regardless of the registration target sites. The accuracy, however, increased with the selection of widespread registration points, and 95% of all errors were below 3.70 mm (P > .95). The results compare favorably with the four most commonly used stereotaxic framed units. A misregistration error of 0.3-2.2 mm was found during intraoperative correlation between anatomy on the CT display and actual anatomic location in the operative field.

Original languageEnglish (US)
Pages (from-to)735-742
Number of pages8
JournalRADIOLOGY
Volume188
Issue number3
DOIs
StatePublished - Jan 1 1993

Keywords

  • Computed tomography (CT), three-dimensional
  • Computers, examination control
  • Skull, abnormalities
  • Skull, neoplasms
  • Stereotaxis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Zinreich, S. J., Tebo, S. A., Long, D. M., Brem, H., Mattox, D. E., Loury, M. E., Vander Kolk, C. A., Koch, W. M., Kennedy, D. W., & Bryan, R. N. (1993). Frameless stereotaxic integration of CT imaging data: Accuracy and initial applications. RADIOLOGY, 188(3), 735-742. https://doi.org/10.1148/radiology.188.3.8351341