A new targeting device for stereotaxic procedures within the CT scanner

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Abstract
Summary A new targeting device is reported which makes it possible to perform stereotaxic procedures within CT scanners under tomographic control. The zero position of the biopsy needle is the reference point for all measurements. The head of the anesthetized patient is immobilized with firm plastic cushions in a special head holder. This unit can be used for biopsies, preoperative marking of small lesions, therapeutic punctures, and placement of radioactive substances into inoperable brain tumors.