Effect Of Changing Patient Position From Supine To Prone On The Accuracy Of A Brown-Roberts-Wells Stereotactic Head Frame System (2003)
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BibTeX
@MISC{Rohlfing03effectof,
author = {Torsten Rohlfing and Calvin R. Maurer and Department Of Neurosurgery and Department Of Neurosurgery and David Dean Ph. D and Robert J. Maciunas and Wells Stereotactic and Head Frame System},
title = {Effect Of Changing Patient Position From Supine To Prone On The Accuracy Of A Brown-Roberts-Wells Stereotactic Head Frame System},
year = {2003}
}
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Abstract
on and one in the prone position. The prone images were registered to the respective supine images by use of an intensity-based registration algorithm, once using only the frame and once using only the head. The difference between the transformations produced by these two registrations describes the movement of the patient's head with respect to the frame. RESULTS: The maximum frame-based registration error between the supine and prone positions was 2.8 mm; it was more than 2 mm in two patients and more than 1.5 mm in six patients. Anteroposterior translation is the dominant component of the difference transformation for most patients. In general, the magnitude of the movement increased with brain volume, which is an index of head weight. CONCLUSION: To minimize frame-based registration error caused by a change in the mechanical load on the frame, stereotactic procedures should be performed with the patient in the identical position during imaging and intervention. KEY WOR
