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










Image Number 5 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
Transparent zebrafish and preparation method thereof
System and method for combined I/Q generation and selective phase interpolation
Method, apparatus, and system for synchronizing contents
MEMS structure and method for making the same
Multi-chip package with a supporting member and method of manufacturing the same
Method for producing vinyl acetate monomer
Methods and apparatus for map detection with reduced complexity
  Randomly Featured Patents
Alpha-methylstyrene high-content copolymers, a process for their production and thermoplastic resin compositions containing alpha-methylstyrene high-content copolymers
Monitoring method and a monitoring equipment
Facile, high yield synthesis of 2,3-diphenyl-1,3-butadiene
Clock work movement for a wristwatch
Triazoloquinazolines
Power supply system for vehicle and electrically-powered vehicle having the power supply system
Self-locking chuck
Vending machine for bottles
Mechanical face seal assembly
Process for manufacturing a complete garment on a two needle bed flat knitting machine