An atlas-based method to compensate for brain shift: preliminary results.

An atlas-based method to compensate for brain shift: preliminary results. Research Abstract Details 

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An atlas-based method to compensate for brain shift: preliminary results. Abstract Text:

Prashanth Dumpuri,Reid C Thompson,Benoit M Dawant,A Cao,Michael I Miga,

Compensating for intraoperative brain shift using computational models has shown promising results. Since computational time is an important factor during neurosurgery, a priori knowledge of the possible sources of deformation can increase the accuracy of model-updated image-guided systems. In this paper, a strategy to compensate for distributed loading conditions in the brain such as brain sag, volume changes due to drug reactions, and brain swelling due to edema is presented. An atlas of model deformations based on these complex loading conditions is computed preoperatively and used with a constrained linear inverse model to predict the intraoperative distributed brain shift. This relatively simple inverse finite-element approach is investigated within the context of a series of phantom experiments, two in vivo cases, and a simulation study. Preliminary results indicate that the approach recaptured on average 93% of surface shift for the simulation, phantom, and in vivo experiments. With respect to subsurface shift, comparisons were only made with simulation and phantom experiments and demonstrated an ability to recapture 85% of the shift. This translates to a remaining surface and subsurface shift error of 0.7+/-0.3 mm, and 1.0+/-0.4 mm, respectively, for deformations on the order of 1cm.

An atlas-based method to compensate for brain shift: preliminary results. Publishing Authors By Initials

P Dumpuri,RC Thompson,BM Dawant,A Cao,MI Miga,

For similar equipment and supplies: phantoms, imaging research abstracts see: equipment and supplies: phantoms, imaging research

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An atlas-based method to compensate for brain shift: preliminary results. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Medical image analysis

VOLUME: 11

Page Numbers: 128-45

Journal Abbreviation:

ISSN: 1361-8415

DAY: 1

MONTH: 03

YEAR: 2007

An atlas-based method to compensate for brain shift: preliminary results. Information

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LANGUAGE: eng

NlmUniqueID: 9713490

An atlas-based method to compensate for brain shift: preliminary results. Keywords Mesh Terms:

KEYWORDS: Phantoms, Imaging

MESH TERMS: surgery

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Grant and Affiliation Information for An atlas-based method to compensate for brain shift: preliminary results.

AFFILIATION: Vanderbilt University, Department of Biomedical Engineering, P.O. 1631, Station B, Nashville, TN 37235, USA.

Country: Netherlands

AGENCY: United States NINDS

GRANT: R01 NS049251-01A1

ACRONYM: NS

MEDLINETA: Med Image Anal

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