[특허]Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging

Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-006/14 A61B-006/00 A61B-006/02 A61B-006/06
출원번호	US-0205787 (2016-07-08)
등록번호	US-9907520 (2018-03-06)
발명자 / 주소	Zhou, Otto Z. Lu, Jianping Shan, Jing Tucker, Andrew Chtcheprov, Pavel Platin, Enrique Mol, André Gaalaas, Laurence Rossman Wu, Gongting
출원인 / 주소	The University of North Carolina at Chapel Hill
대리인 / 주소	Jenkins, Wilson, Taylor & Hunt, P.A.
인용정보	피인용 횟수 : 0 인용 특허 : 69

초록 ▼

Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging are disclosed. In some aspects, an intraoral tomosynthesis imaging system includes an x-ray source array for positioning outside a mouth of a patient, wherein the x-ray source array contains multiple x-ray focal spots that are spatially distributed on an anode, an area digital x-ray detector for positioning inside the mouth of the patient, a geometry calibration mechanism for connecting the x-ray detector to the x-ray source array, an x-ray collimator for confining x-ray beams to a region of interest, a controller for regulating x-ray radiation and synchronization of the x-ray radiation with the x-ray detector, such that multiple 2D projection images of the ROI are acquired without mechanical motion of the x-ray source array, the x-ray detector, or the mouth of the patient, and a computer program and workstation for 3D tomosynthesis image reconstruction and display.

대표청구항 ▼

1. An intraoral tomosynthesis imaging system comprising: an x-ray source array for positioning outside a mouth of a patient, wherein the x-ray source array contains multiple x-ray focal spots that are spatially distributed on one or multiple anode(s);an area digital x-ray detector for positioning inside the mouth of the patient;an x-ray collimator for confining x-ray beams to a region of interest (ROI);a controller for regulating x-ray radiation and synchronizing the x-ray exposure with the x-ray detector, such that multiple two-dimensional (2D) projection images of the ROI are acquired without moving the x-ray source array, the area digital x-ray detector, or the mouth of the patient; anda computer processor for three-dimensional (3D) tomosynthesis image reconstruction and display. 2. The system of claim 1, further comprising a geometry calibration mechanism to determine the relative position of the x-ray detector placed inside the mouth of the patient with respect to the x-ray source array. 3. The system of claim 2, wherein the geometry calibration mechanism comprises a magnetic attachment attachable to the area digital x-ray detector while inside the mouth of the patient in order to connect the x-ray source array to the area digital x-ray detector. 4. The system of claim 1, wherein the x-ray source array is a field emission x-ray source array. 5. An intraoral three-dimensional (3D) imaging system comprising: an x-ray source array for positioning outside a mouth of a patient, wherein the x-ray source array contains 3 to 100 x-ray focal spots that are spatially distributed on an anode and spanning an angular range approximately between 3 and 25 degrees, each of the x-ray focal spots being approximately between 0.05 and 2 mm in size;an area digital x-ray detector for positioning inside the mouth of the patient;a geometry calibration mechanism connectable to the area digital x-ray detector;an x-ray collimator for confining x-ray beams to a region of interest (ROI);an electronic controller for regulating x-ray radiation and synchronization of the x-ray radiation with the area digital x-ray detector, such that multiple two-dimensional (2D) projection images of the ROI are acquired without mechanical motion of the x-ray source array, the area digital x-ray detector, or the mouth of the patient; anda computer processor with executable programs for geometry calibration, tomosynthesis reconstruction, and image display. 6. A method for dual energy intraoral three-dimensional (3D) tomographic imaging, the method comprising: positioning an area digital x-ray detector at a first position inside the mouth of the patient;positioning an x-ray source array outside a mouth of a patient, wherein the x-ray source array comprises multiple x-ray focal spots that are spatially distributed on an anode;acquiring two sets of two-dimensional (2D) projection images of a same region of interest at two different x-ray energies; andprocessing the two sets of 2D projection images to obtain a reconstructed 3D tomography image with high contrast. 7. The geometry calibration mechanism of claim 2, further configured to provide motion tracking capability during the imaging procedure to dynamically determine the relative position of the x-ray detection with respect to the x-ray source when there is unintentional movement. 8. The geometry calibration device of claim 2, further comprising one or multiple light source(s) mounted on either the x-ray source or the collimator; a screen; a camera; and a mechanism to determine position of the detector with respect to the x-ray source using optical images formed on the screen and captured by the camera.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging 원문보기

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Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging 원문보기

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연구과제 타임라인

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