Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
X-ray CT scanner










Image Number 11 for United States Patent #5684855.

Only an umbra of an X-ray beam is allowed to enter a designated detecting device arrays of an X-ray detector, whereby stable and good X-ray detection signals and images are provided. Even if a focal spot in an X-ray tube shifts, occurrence of artifacts or shifts of CT numbers is prevented to improve image quality. An X-ray CT scanner comprises an X-ray tube and X-ray detector, which are opposed to each other with a patient lying down on a couchtop between them, and a pre-collimator inserted between the X-ray tube and patient for restricting the width in a slice direction of an X-ray beam irradiated by the X-ray tube. The X-ray detector consists of, for example, a two-dimensional detector in which a plurality of detecting device arrays are arranged in the slice direction, each detecting device array including a plurality of detecting channels. The scanner further comprises a unit for controlling the pre-collimator in a manner that a detecting device array designated among the plurality of detecting device arrays receives only an umbra of the X-ray beam. An X-ray CT image is reconstructed using data detected by the designated detecting device arrays.








 
 
  Recently Added Patents
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Display screen with graphical user interface
Amnion-derived cells, methods of making and uses thereof
Potentiometric-sensor chip, potentiometric assay, and assay kit
Method for treating wounds for mammals, wound healer compound, and method of manufacturing thereof
Single mode optical fiber with improved bend performance
Apparatus for preventing overcharge of a battery
  Randomly Featured Patents
Apparatus for cutting corrugated metal sheet
Storage apparatus and method for controlling storage apparatus
Optical gain flattening components, optical chips and optical amplifiers and methods employing same
Apparatus for adjusting the length of a thread loop in a tag fastener
Pulse insertion circuit
Integrated biosensor and simulation system for diagnosis and therapy
Method for producing polymers of alpha-olefin
Wafer
Remote hearing aid volume control
2,4-disulfonyl phenyl butyl nitrone, its salts, and their use as pharmaceuticals