Title :
A multi-mode X-ray imager for medical and industrial applications
Author :
Colbeth, R.E. ; Allen, M.J. ; Day, D.J. ; Gilblom, D.L. ; Harris, R. ; Job, I.D. ; Klausmeier-Brown, M.E. ; Pavkovich, J. ; Seppi, E.J. ; Shapiro, E.G. ; Wright, M.D. ; Yu, J.M.
Author_Institution :
Varian Associates Inc., Palo Alto, CA, USA
fDate :
31 May-3 Jun 1998
Abstract :
This paper describes a multi-mode, digital imager for real-time X-ray applications. The imager has three modes of operation: low dose fluoroscopy, zoom fluoroscopy, and high resolution radiography. These modes trade-off resolution or field-of-view for frame rate and additionally optimize the sensitivity of the imager to match the X-ray dose used in each mode. This large area sensing technology has a form factor similar to that of an X-ray film cassette, no geometric image distortion, no sensitivity to magnetic fields, a very large dynamic range which eliminates repeat shots due to over or under exposure, 12 bit digital output and the ability to switch between operating modes in real-time. Medical applications include fluoroscopy and radiography, while non-destructive test (NDT) applications might include solder joint verification on printed circuit boards and parts inspection in the automotive and aerospace industries
Keywords :
X-ray imaging; biomedical imaging; inspection; nondestructive testing; radiography; 12 bit; NDT; digital imager; dynamic range; frame rate; high resolution radiography; industrial applications; large area sensing technology; low dose fluoroscopy; medical applications; multi-mode X-ray imager; operating modes; parts inspection; sensitivity; solder joint verification; zoom fluoroscopy; Biomedical imaging; Circuit testing; Digital images; Image resolution; Magnetic fields; Magnetic films; Radiography; Switches; X-ray applications; X-ray imaging;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.705431
