Stationary x-ray digital breast tomosynthesis systems and related methods are disclosed according to one aspect, the subject matter described herein can include an x-ray tomosynthesis system having a plurality of stationary field emission x-ray sources configured to irradiate a location for positioning an object to be imaged with x-ray beams to generate projection images of the object. The breast tomosynthesis system was built up with fixed multi-beam field-emission x-ray (mbfex) sources based on unique properties of carbon nanotube electron emitters parallel imaging configuration was applied to multi-beam x-ray system design where the path of the x-ray tube lies in a plane that is parallel to the detector plane [ 9 ]. Incorporate an x-ray source that moves over a certain angle to acquire images this tube motion is a major limitation because it degrades image quality, increases the scan time and causes prolonged patient discomfort.
A tomosynthesis method for creating a three-dimensional reconstruction of a target element volume acquires radiation absorbance images of the target element volume through a limited plurality of positions. The system used static multi-beam x-ray emitters as the sources and controlled the x-ray sources by electronic switches in the investigated prototype system, 15 x-ray sources, operated at a voltage of 30 kv, were linearly fixed along a parallel line above the detector, as illustrated in fig 1. Stationary digital tomosynthesis using cnt x-ray source array otto zhou, phd jianping lu, phd - advances in the cnt x-ray source array technology - breast tomosynthesis • iterative reconstruction phantom imaging: 3d vs 2d increased visualization of dental anatomy, caries, and tooth fractures.
Reconstruction of blood vessels from x-ray substraction projections tomosynthesis reconstruction from multi-beam x-ray sources functional imaging in small animals using tomographic digital subtraction angiography. Digital breast tomosynthesis (dbt) is an imaging technique that allows a volumetric reconstruction of the whole breast from a finite number of low-dose two-dimensional projections obtained by different x-ray tube angles, with a geometric principle very similar to that applied in stratigraphic technique. Classical laminography is based on a relative motion of the x-ray source, the detector and the object the x-ray source and the detector are either moved synchronously on circles as shown in figure 1 or are simply translated in opposite directions as shown in figure 2.
Tomosynthesis reconstruction from multi-beam x-ray sources, david s lalush, enzhuo quan, ramya rajaram, jian zhang, jianping lu, and otto zhou, proceeding of 2006 ieee international symposium on biomedical imaging. Ct scan – wikipedia based on their ability to absorb the x-ray beam small bore multi-sliced ct scanners respond to two x-ray sources and detector breast tomosynthesis reconstruction with a multi-beam x-ray as a new three-dimensional breast imaging technique, breast tomosynthesis allows the reconstruction of an arbitrary set of planes in the. Reconstruction with a standard biopsy training breast phantom using a novel multi-beam x-ray sources breast tomosynthesis system carbon nanotube technology based x-ray tubes were lined up along a parallel-imaging geometry. Carbon nanotube based stationary x-ray tomosynthesis scanner for detection of breast cancer guang yang a dissertation submitted to the faculty of the university of north carolina at chapel hill in.
Abstract: we study the effects of geometric design on the reconstruction of 3d images from an x-ray tomosynthesis system using microfabricated discrete x-ray sources carbon-nanotube-based field-emission x-ray sources can be fabricated in arrays however, little is known about the effects of the. As a new three-dimensional breast imaging technique, breast tomosynthesis allows the reconstruction of an arbitrary set of planes in the breast from a limited-angle series of x-ray projection images. Geometry calibration between x-ray source and detector for tomosynthesis with a portable x-ray system struction omosynthesis portable x-ray system introduction in the clinical ﬁeld, x-ray imaging and x-ray computed x-ray source and the amco is termed as the s–a geome. A novel nanotechnology enabled x-ray source, invented by zhou et al, has been investigated for breast tomosynthesis applications (yang et al 2008, zhou et al 2010) the breast tomosynthesis system is built up with fixed multi-beam field-emission x-ray. Digital tomosynthesis is a novel imaging technology to provide three-dimensional reconstruction with fast image acquisition tomosynthesis imaging configuration optimization is essential to improve image quality with limited dosage currently, both parallel imaging and partial isocentric imaging.
Multiple source x-ray tube to produce a tomosynthesis image from a set of projections obtained at a single tube position the electron sources within the tube are realized using cold cathode carbon structed using the simultaneous iterative reconstruction technique, which is accelerated using a. In this paper, we presented our preliminary tomosynthesis reconstruction study with a novel multi-beam x-ray source developed by zhou et al recently [23-25] the breast tomosynthesis system was built up with fixed multi-beam field. M hadsell, j zhang, g cao, p laganis, f sprenger, e schreiber, s chang, j lu, and o zhou, th‐c‐220‐04: development and characterization of a prototype compact microbeam radiation therapy device based on carbon nanotube field emission x‐ray source technology. A tomosynthesis image acquisition element for obtaining a plurality of images of the target element from a plurality of angles having an x-ray source positional at a plurality of positions with respect to the target element and an x-ray detector positioned so as to detect x-ray emitted by the x-ray source passing through the target element and.
A novel multi-beam x-ray source, developed by zhou et al, has been investigated for breast tomosynthesis applications the breast tomosynthesis system was built up with fixed multi-beam field-emission x-ray (mbfex) sources based on unique properties of carbon nanotube electron emitters. Tomosynthesis reconstruction sampling geometry sampling is incomplete (in fourier space) x-ray beam object as the angular range of the tomosynthesis projection (source) images is reduced, the 0% 0% 0% 0% 0% 10 1 the z-resolution is improved 2 the in-focus plane thickness is decreased 3 the blurring of out of plane objects in. Abstract as a new three-dimensional breast imaging technique, breast tomosynthesis allows the reconstruction of an arbitrary set of planes in the breast from a limited-angle series of x-ray projection images. This paper represents a preliminary phantom study and computer simulation results of different breast tomosynthesis reconstruction algorithms with a novel carbon nanotube based multi-beam x-ray source.
Conclusion and discussion a stationary digital breast tomosynthesis system with a cnt based distributed x-ray source has been designed and assembled, with comparable geometry to the conventional mammography devices. Geometric calibration of a stationary digital breast tomosynthesis system based on distributed carbon nanotube x-ray source arrays image projection matrix-based approach cnt-based multi-beam x-ray sdbt system multi-source cnt x-ray sdbt system calibration method square sdbt system carbon geometric calibration of a stationary digital. Multi-beam x-ray source breast tomosynthesis reconstruction with different algorithms weihua zhou , xin qian , jianping lu , otto zhou , ying chen proceedings of spie--the international society. Tomosynthesis, also digital tomosynthesis (dts), is a method for performing high-resolution limited-angle tomography at radiation dose levels comparable with projectional radiography it has been studied for a variety of clinical applications, including vascular imaging, dental imaging, orthopedic imaging, mammographic imaging, musculoskeletal.