Collimation apparatus for x-ray beam correction
Patent
·
OSTI ID:6167856
This patent describes a computed tomography system including an x-ray source for producing a fan beam of x-rays along a fan beam plane in response to an exposure technique the fan beam plane being at deviation angle {alpha} from an imaging plane and intersecting a detector array at position D{sub z}. It comprises a collimator means having position C{sub z} for controlling the alignment of the fan beam plane; a z-axis offset detector positioned to intercept the fan beam for producing a position signal dependent on D{sub z}, an error calculation means for generating an error signal in response to the position signal; and a collimator controller responsive to the error signal for changing the relative position C{sub z} of the collimator with respect to the x-ray source and detector array so as to reduce the magnitude of the error signal.
- Assignee:
- General Electric Co., Milwaukee, WI (USA)
- Patent Number(s):
- US 4991189; A
- Application Number:
- PPN: US 7-509598
- OSTI ID:
- 6167856
- Country of Publication:
- United States
- Language:
- English
Similar Records
X-ray collimator, particularly for use in computerized axial tomography apparatus
Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging
High precision x-ray collimator
Patent
·
Tue Jul 07 00:00:00 EDT 1981
·
OSTI ID:5631073
Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging
Patent
·
Tue Oct 24 00:00:00 EDT 1995
·
OSTI ID:119050
High precision x-ray collimator
Patent
·
Tue Oct 01 00:00:00 EDT 1991
·
OSTI ID:5751119