Resources Contact Us Home
Compensation of computed tomography data for objects positioned outside the field of view of the reconstructed image

Image Number 4 for United States Patent #5043890.

An x-ray CT system acquires attenuation data over a field of view which is larger than the field of view of the reconstructed image. The data used to reconstruct the image is compensated for the shading effects otherwise caused by objects outside the image, but within the x-ray path. This compensation is accomplished with minimal impact on computation time by using a first order estimation of the convolution of the acquired attenuation data outside the image field of view.

  Recently Added Patents
Light emitting device
Moving picture decoding device and moving picture decoding method
Field-programmable analog array with memristors
Storage system comprising multiple microprocessors and method for sharing processing in this storage system
Devices including composite thermal capacitors
Pyridazine compounds for controlling invertebrate pests
Motor and disk drive apparatus
  Randomly Featured Patents
Impregnation of cellulose-containing material with black liquor in a single vessel digester
Inhibited oxidation foil connector for a lamp
Weight material for drilling fluids and method of creating and maintaining the desired weight
Low profile full wavelength meandering antenna
Cleavage of nucleic acids
Method and apparatus for determining the position of catheters, tubes, placement guidewires and implantable ports within biological tissue
Image display device
Lamp connecting rod and wire connection box assembling structure
Front-loading medical injector and syringe for use therewith
Method of updating dictionaries in a data transmission system using data compression