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Generalized filtered back-projection reconstruction in digital tomosynthesis

A technology of back projection and rays, applied in the direction of projection reconstruction, equipment for radiological diagnosis, application, etc., can solve problems such as infeasibility

Inactive Publication Date: 2004-07-28
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, acquiring a full 360° image is not feasible for many applications, including breast imaging, as design considerations limit full rotation around the breast

Method used

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  • Generalized filtered back-projection reconstruction in digital tomosynthesis
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  • Generalized filtered back-projection reconstruction in digital tomosynthesis

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Embodiment Construction

[0024] Preferred embodiments of the present invention will now be described in detail. Throughout the drawings, the same reference numerals designate the same or similar parts.

[0025] The invention will be described in terms of apparatus and methods for breast imaging and breast cancer detection. However, it should be appreciated that the teachings of the present invention are equally applicable to other fields such as chest and lung photography, orthopedic photography, and other medical and non-medical applications (such as non-destructive evaluation).

[0026] figure 1 A tomosynthesis apparatus according to one embodiment of the present invention is shown. A radiation source 110 for emitting x-rays is movable at an angle through a plurality of emission positions A, B, C, which correspond to a plurality of images of tissue 120 . Although figure 1Only three firing positions are shown in the figure, but one of ordinary skill in the art will recognize that three, or more, ...

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PUM

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Abstract

There is provided a method of constructing a three dimensional (3D) image of an object from a plurality of two dimensional (2D) views of the object, including filtering the plurality of 2D views of the object (260), and order statistics-based backprojecting the filtered 2D views into the 3D image of the object (270).

Description

[0001] The Government owns rights in this invention pursuant to Contract No. 22287, Naval Institute / Henry M. Jackson Foundation. technical field [0002] The present application relates to a digital imaging technique, in particular, to the technique of reconstructing a three-dimensional image (3D) using a tomosynthesis device. Background technique [0003] It is well known in the medical world that breast cancer is a leading cause of death in women (and to a lesser extent it also affects men). However, if the abnormality is detected early and appropriate medical attention is given, the risk of death and / or serious misdiagnosis can be greatly reduced. Today, there are many devices and techniques in development (such as mammography) that can detect abnormalities in the breast earlier and with greater accuracy than traditional devices. The following is a brief description of some existing devices, techniques and their deficiencies. [0004] Currently, the vast majority of mam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/02A61B6/00G06T3/00G06T5/40G06T11/00
CPCG06T11/005G06T11/006G06T2211/436
Inventor 伯恩哈德·E·H·克劳斯杰弗里·W·埃伯哈德
Owner GENERAL ELECTRIC CO