Stereotactic Target Localization Accuracy in Interventional Magnetic Resonance Imaging

Publisher： Karger

E-ISSN： 1423-0372|79|3-4|191-201

ISSN： 1011-6125

Source： Stereotactic and Functional Neurosurgery, Vol.79, Iss.3-4, 2003-07, pp. : 191-201

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

Objective: To compare stereotactic target determination, based on images obtained from interventional MRI (iMRI), conventional closed MR and CT. Methods: Stereotactic coordinates for 55 targets in an artificial scull were derived from iMRI scans and compared using CT as the standard. Stereotactic coordinates were also derived from iMRI scans in a series of patients and compared using iMRI fused with CT as the standard. Results: The mean difference between targets in the skull phantom determined from iMRI and CT images was 0.90 ± 0.28 mm, with a maximum difference of 1.57 mm. The mean difference between targets in the patients derived from iMRI alone and interventional MR fused with CT was 1.39 ± 0.54 mm, with a maximum difference of 2.47 mm. Discussion: The results indicate that iMRI can be used for stereotactic target localization.

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