DocumentCode
1104444
Title
Real-time X-ray fan-beam z-axis position measurement
Author
Gard, Michael F.
Author_Institution
Gen. Electr. Med. Syst., Milwaukee, WI, USA
Volume
43
Issue
2
fYear
1994
fDate
4/1/1994 12:00:00 AM
Firstpage
295
Lastpage
298
Abstract
Precise control of fan-beam position is important to the production of highest quality CT images; failure to maintain fan-beam orientation can produce image artifacts. This paper describes a special technique which provides accurate real-time measurement of fan-beam z-axis position. A geometrical mask set is used to modify the response of conventional detector cells. Data from the masked detector cells are used to form a self-consistent normalized position signal which is independent of radiological dose
Keywords
X-ray applications; biomedical measurement; computerised tomography; diagnostic radiography; medical image processing; position measurement; real-time systems; CT images; X-ray fan-beam z-axis position measurement; fan-beam orientation; fan-beam position control; fan-beam z-axis position; geometrical mask; image artifacts; masked detector cells; radiological dose; real-time measurement; Anatomy; Anodes; Attenuation; Collimators; Computed tomography; Face detection; Motion detection; Position measurement; Radiation detectors; X-ray imaging;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.293436
Filename
293436
Link To Document