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
System for thermally controlling displays
Headset, terminal, and method capable of switching headset mode
Mechanisms for marking the orientation of a sawed die
Organizer
Systems and methods for automated institutional processing of payments
Cup
Dryer
  Randomly Featured Patents
Phased array antenna using a movable phase shifter system
Chassis for front and back inserted modules
General purpose input board for a touch actuation
Stacked shape plasma reactor design for treating auto emissions
Animal tether
Radiated sound reducing structure
Preservation of exposed cut fresh fruit
Techniques for intelligent video ad insertion
Method of producing analytical curve
Multi-purpose instructing block