Abstract: The invention provides x-ray-based breast imaging systems and related methods that are, for example, applicable to contrast enhanced digital mammography and contrast enhanced digital breast tomosynthesis and allow fast, cost-effective and accurate x-ray imaging.

Abstract: The invention provides x-ray-based breast imaging systems and related methods that are, for example, applicable to contrast enhanced digital mammography and contrast enhanced digital breast tomosynthesis and allow fast, cost-effective and accurate x-ray imaging.

Abstract: An x-ray phase contrast imaging apparatus and method of operating the same. The apparatus passes x-rays generated by an x-ray source through, in succession, a source grating, an object of interest, a phase grating, and an analyzer grating. The x-ray source, the source grating, the phase grating, and the analyzer grating move as a single entity relative to an object of interest. The phase grating and the analyzer grating remain in fixed relative location and fixed relative orientation with respect to one another. The detected x-rays are converted to a time sequence of electrical signals. In some cases, the apparatus is controlled, and the electrical signals are analyzed by, by a general purpose programmable computer provided with instructions recorded on a machine readable medium. One or more x-ray phase contrast images of the object of interest are generated, and can be recorded or displayed.

Abstract: The invention provides x-ray-based breast imaging systems and related methods that are, for example, applicable to contrast enhanced digital mammography and contrast enhanced digital breast tomosynthesis and allow fast, cost-effective and accurate x-ray imaging.

Abstract: The invention provides x-ray-based breast imaging systems and related methods that are, for example, applicable to contrast enhanced digital mammography and contrast enhanced digital breast tomosynthesis and allow fast, cost-effective and accurate x-ray imaging.

Abstract: An x-ray phase contrast imaging apparatus and method of operating the same. The apparatus passes x-rays generated by an x-ray source through, in succession, a source grating, an object of interest, a phase grating, and an analyzer grating. The x-ray source, the source grating, the phase grating, and the analyzer grating move as a single entity relative to an object of interest. The phase grating and the analyzer grating remain in fixed relative location and fixed relative orientation with respect to one another. The detected x-rays are converted to a time sequence of electrical signals. In some cases, the apparatus is controlled, and the electrical signals are analyzed by, by a general purpose programmable computer provided with instructions recorded on a machine readable medium. One or more x-ray phase contrast images of the object of interest are generated, and can be recorded or displayed.

Abstract: Systems and methods for providing radiographic, stereoscopic and tomographic images of an object of interest. Examples of objects of interest are body parts of living beings, such as the human breast and the human chest. The apparatus includes a high-fluence rate x-ray source and a plurality of satellite x-ray sources operating at lower fluence rate than the high-fluence rate source. A controller controls the operation and locations of the sources, and the operation of a detector. The method provides procedures in which the operation of the high-fluence source and the satellite sources are individually controlled as to location and orientation relative to the object of interest. In some operations, one satellite source may be operating while another satellite source may be repositioning. By proper control, a reduced x-ray dose and reduced operating time can be attained, thereby improving image quality, patient care, and patient experience.

Abstract: Systems and methods for providing radiographic, stereoscopic and tomographic images of an object of interest. Examples of objects of interest are body parts of living beings, such as the human breast and the human chest. The apparatus includes a high-fluence rate x-ray source and a plurality of satellite x-ray sources operating at lower fluence rate than the high-fluence rate source. A controller controls the operation and locations of the sources, and the operation of a detector. The method provides procedures in which the operation of the high-fluence source and the satellite sources are individually controlled as to location and orientation relative to the object of interest. In some operations, one satellite source may be operating while another satellite source may be repositioning. By proper control, a reduced x-ray dose and reduced operating time can be attained, thereby improving image quality, patient care, and patient experience.

Abstract: A system for x-ray fluoroscopic imaging of bodily tissue in which a scintillation screen and a charge coupled device (CCD) is used to accurately image selected tissue. An x-ray source generates x-rays which pass through a region of a subject's body, forming an x-ray image which reaches the scintillation screen. The scintillation screen re-radiates a spatial intensity pattern corresponding to the image, the pattern being detected by the CCD sensor. In a preferred embodiment the imager uses four 8×8-cm three-side buttable CCDs coupled to a CsI:T1 scintillator by straight (non-tapering) fiberoptics and tiled to achieve a field of view (FOV) of 16×16-cm at the image plane. Larger FOVs can be achieved by tiling more CCDs in a similar manner. The imaging system can be operated in a plurality of pixel pitch modes such as 78, 156 or 234-?m pixel pitch modes. The CCD sensor may also provide multi-resolution imaging.

Abstract: The present invention related to a system and method for performing scatter correction in x-ray imaging systems. A pixellated solid state imaging detector is used in which an electronic window or slot is scanned across the two dimensional surface of the detector to selectively record image data. In a preferred embodiment, a collimator is used to define relative movement between an x-ray beam and the x-ray detector. A scatter correction program can be used to correct for scattering in the detected image data to provide for improved imaging in medical, scientific and industrial applications.

Abstract: A system for x-ray fluoroscopic imaging of bodily tissue in which a scintillation screen and a charge coupled device (CCD) is used to accurately image selected tissue. An x-ray source generates x-rays which pass through a region of a subject's body, forming an x-ray image which reaches the scintillation screen. The scintillation screen re-radiates a spatial intensity pattern corresponding to the image, the pattern being detected by the CCD sensor. In a preferred embodiment the imager uses four 8×8-cm three-side buttable CCDs coupled to a CsI:T1 scintillator by straight (non-tapering) fiberoptics and tiled to achieve a field of view (FOV) of 16×16-cm at the image plane. Larger FOVs can be achieved by tiling more CCDs in a similar manner. The imaging system can be operated in a plurality of pixel pitch modes such as 78, 156 or 234-&mgr;m pixel pitch modes. The CCD sensor may also provide multi-resolution imaging.