Peri- and postoperative magnetic resonance imaging localization of pallidotomy.

Abstract:

:Postoperative magnetic resonance imaging (MRI) of basal ganglia functional lesions illustrates the accuracy of preoperative target localization. The technique of perioperative MRI and CT localization for pallidotomy will be discussed and correlated with the center of the lesion on postoperative standard MRI as well as three-dimensional (3-D) volume acquisition of image. Using a 1.5-tesla Signa system, a conventional acquisition of 128-slice, 256 x 256 matrix spoiled grass (SPGR) images were used for 3-D reformation. This allowed approximately 1 x 1 x 2 mm resolution over a 24-cm field of view in a T-1-weighted image. The display affords a volumetric analysis of the anatomic location and relation of the post-ventral pallidotomy to adjacent structures. Accuracy lesion placement based on perioperative MR coordinates and revealed on postoperative images is confirmed. The volume of the lesion as well as its location are factors that affect clinical outcome.

authors

Lehman RM,Mezrich R,Sage J,Goldbe L

doi

10.1159/000098598

subject

Has Abstract

pub_date

1994-01-01 00:00:00

pages

61-70

issue

1-4

eissn

1011-6125

issn

1423-0372

journal_volume

62

pub_type

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