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A newly developed removable dental device for fused 3-D MRI/Meg imaging

Abstract

Recently 3-D imaging techniques have been used to shed light on the role of abnormal brain functions in such conditions as nocturnal bruxism and orofacial pain. In order to achieve precise 3-D image fusion between magnetic resonance images (MRI) and magnetoencephalography (MEG) data, we developed a removable dental device which attaches rigidly to the teeth. Using this device, correlation of MEG and MRI data points was achieved by the co-registration of 3 or more fiducial points. Using a Polhemus 3-space digitizer the locations of the points were registered on MEG and then a small amount of high-water-content material was placed at each point for registering these same points on MRI. The mean reproducibility of interpoint distances, determined for 2 subjects, was between 0.59 and 0.82 mm. Using a Monte Carlo statistical analysis we determined that the accuracy of a posterior projection from the fiducial points to any point within the strata of the brain is {+-}3.3 mm. The value of this device is that it permits reasonably precise and repeatable co-registration of these points and yet it is easily removed and replaced by the patient. Obviously such a device could also be adapted for use in diagnosis and analysis of  More>>
Authors:
Kuboki, Takuo; [1]  Clark, G T; Akhtari, M; Sutherling, W W
  1. Okayama Univ. (Japan). Dental School
Publication Date:
Jun 01, 1999
Product Type:
Journal Article
Reference Number:
EDB-00:010658
Resource Relation:
Journal Name: Oral Radiology; Journal Volume: 15; Journal Issue: 1; Other Information: PBD: Jun 1999
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; NMR IMAGING; DENTISTRY; THREE-DIMENSIONAL CALCULATIONS; SPIN-LATTICE RELAXATION; SPIN-SPIN RELAXATION; BRAIN; TEETH; ACCURACY; MONTE CARLO METHOD
OSTI ID:
20011662
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0911-6028; ORRAEO; TRN: JP9912920
Submitting Site:
JPN
Size:
page(s) 43-52
Announcement Date:

Citation Formats

Kuboki, Takuo, Clark, G T, Akhtari, M, and Sutherling, W W. A newly developed removable dental device for fused 3-D MRI/Meg imaging. Japan: N. p., 1999. Web. doi:10.1007/BF02489756.
Kuboki, Takuo, Clark, G T, Akhtari, M, & Sutherling, W W. A newly developed removable dental device for fused 3-D MRI/Meg imaging. Japan. doi:10.1007/BF02489756.
Kuboki, Takuo, Clark, G T, Akhtari, M, and Sutherling, W W. 1999. "A newly developed removable dental device for fused 3-D MRI/Meg imaging." Japan. doi:10.1007/BF02489756. https://www.osti.gov/servlets/purl/10.1007/BF02489756.
@misc{etde_20011662,
title = {A newly developed removable dental device for fused 3-D MRI/Meg imaging}
author = {Kuboki, Takuo, Clark, G T, Akhtari, M, and Sutherling, W W}
abstractNote = {Recently 3-D imaging techniques have been used to shed light on the role of abnormal brain functions in such conditions as nocturnal bruxism and orofacial pain. In order to achieve precise 3-D image fusion between magnetic resonance images (MRI) and magnetoencephalography (MEG) data, we developed a removable dental device which attaches rigidly to the teeth. Using this device, correlation of MEG and MRI data points was achieved by the co-registration of 3 or more fiducial points. Using a Polhemus 3-space digitizer the locations of the points were registered on MEG and then a small amount of high-water-content material was placed at each point for registering these same points on MRI. The mean reproducibility of interpoint distances, determined for 2 subjects, was between 0.59 and 0.82 mm. Using a Monte Carlo statistical analysis we determined that the accuracy of a posterior projection from the fiducial points to any point within the strata of the brain is {+-}3.3 mm. The value of this device is that it permits reasonably precise and repeatable co-registration of these points and yet it is easily removed and replaced by the patient. Obviously such a device could also be adapted for use in diagnosis and analysis of brain functions related with other various sensory and motor functions (e.g., taste, pain, clenching) in maxillofacial region using MRI and MEG. (author)}
doi = {10.1007/BF02489756}
journal = {Oral Radiology}
issue = {1}
volume = {15}
journal type = {AC}
place = {Japan}
year = {1999}
month = {Jun}
}