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
Distributed multicast packet replication with centralized quality of service
Mobile target system
Data center management unit with improved disaster prevention and recovery
Synthesis of amines and intermediates for the synthesis thereof
Volume compensation within a photovoltaic device
Diagnostic data interchange
Use of LPA for encouraging pregnancy, and fertility agent
  Randomly Featured Patents
Remote controller for enabling an operation command to be obtained from an electronic apparatus and set into an operation key, remote control system having said remote controller, and remote c
Ionic liquids II
Beam light scanning apparatus, image forming apparatus, and beam light scanning method
Tool-less threaded connector assembly
Pretzel chip
Combustor liner with improved heat shield retention
Pourable composition containing an amine oxide -polyethylene glycol mixture
Process of permanent hair shaping
Composite electroless plating
Method of electrochemically machining a bearing ring