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Patent Searching and Data


Title:
CT IMAGING REFERENCE MARKER, THREE-DIMENSIONAL TOMOGRAM CREATION METHOD, MATCHING METHOD, AND SYSTEM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/003452
Kind Code:
A1
Abstract:
Provided are: highly accurate direct matching between a three-dimensional CT tomogram according to a single CT scan scheme and a three-dimensional intraoral surface shape image obtained through an intraoral or oral model scan; a three-dimensional CT tomography reference marker which makes it possible to obtain an image of an accurate size in a three-dimensional CT tomogram, and which is sterilizable and reusable; a CT matching template which includes a reference marker that can be simply fabricated; a matching system using a simple single CT scan scheme; and direct matching that can be used for all cases including a case having much artifact and a case of anodontia. A reference marker made of glass ceramics material has no expansion or contraction during three-dimensional CT tomography, and provides an image of an accurate size. From a three-dimensional CT tomogram of a patient wearing in the oral cavity thereof a CT matching template including a reference marker, and from a three-dimensional intraoral surface shape image in a state in which the reference marker is arranged, a three-dimensional image of the reference marker is acquired. With reference to the reference marker, it is possible to perform accurate direct matching between the three-dimensional CT tomogram and the three-dimensional intraoral surface shape image.

Inventors:
SHIMIZU HIROAKI (JP)
Application Number:
PCT/JP2017/024355
Publication Date:
January 03, 2019
Filing Date:
July 03, 2017
Export Citation:
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Assignee:
SHIMIZU HIROAKI (JP)
International Classes:
A61B6/00; A61B6/03; A61B6/14
Foreign References:
JP2009233294A2009-10-15
JP2013240534A2013-12-05
JP2006021016A2006-01-26
JP2015535182A2015-12-10
US20060293581A12006-12-28
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