Focal Spot Size Impact to Digital X-Ray Image Brightness Statistics

Radiation Interaction with Material and Its Use in Technologies 2010: 3rd International Conference: Program and Materials 2010
Lada Bumbure, Jurijs Dehtjars, Jeļena Mošara, Tatjana Kirsanova, Ļubova Šuvalova

Quality control (QC) tests play a crucial role for patients' dose management in diagnostic radiography. X-ray tube focal spot size is the most important index for QC of x-ray machines. The focal spot size is typically estimated using pinhole or the star pattern. However, the results by such the techniques are rather subjective. This disadvantage could be decreased in digital radiography when an image brightness distribution histogram is in use. Average value of brightness correlates to the focal spot size (significance 0.99). This technique does not require any test object. The results demonstrate that the above approach could become an important part of the QC for digital x-ray diagnostic radiography equipment.

Keywords
Focal, spot, size, impact, digital, x-ray, image, brightness, statistics
Hyperlink
http://alephfiles.rtu.lv/TUA01/000031206_e.pdf

Bumbure, L., Dehtjars, J., Mošara, J., Kirsanova, T., Šuvalova, Ļ. Focal Spot Size Impact to Digital X-Ray Image Brightness Statistics. In: Radiation Interaction with Material and Its Use in Technologies 2010: 3rd International Conference: Program and Materials, Lithuania, Kaunas, 14-16 October, 2010. Kaunas: Technologija, 2010, pp.69-72. ISSN 1822-508X.

Publication language
English (en)