Three dimensional x-ray imaging system

Abstract

Three-dimensional X-ray imaging systems are described in this application. In particular, this application describes a 3D dental intra-oral imaging (3DIO) system that collects a series of 2D image projections. The 2D images are taken at different X-ray source positions located on a circle that defines the base of a regular geometric cone with the intraoral sensor located at the apex of that cone. The application also describes a method for making a three-dimensional image of an object, comprising providing an X-ray source on a motion gantry on a first side of an object to be imaged, positioning a stationary X-ray detector on an opposite side of the object from the X-ray source, moving the X-ray source in a substantially-continuous, circular motion to multiple positions on the first side of the object to create a conical geometry between the detector and the circular motion of the X-ray source, collecting multiple two-dimensional 2D images of the object when the X-ray source is located in the multiple positions, and reconstructing a three-dimensional 3D image using the multiple 2D images. These X-ray systems and methods offer a quick method of imaging an object, such as a tooth, while at the same time using a low radiation dose.