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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lee, S.W. Kim, H.K. Cho, G. Shin, Y.H. Won, Y.Y. |
| Copyright Year | 2000 |
| Description | Author affiliation: Dept. of Nucl. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea (Lee, S.W.) |
| Abstract | High resolution and three dimensional X-ray imaging is becoming more and more popular nowadays. An X-ray microtomographic system with CMOS image sensor has been developed. We have developed a novel area X-ray detector with cost-effective CMOS image sensor. The sensing area of the detector is 55 mm/spl times/55 mm and the light from the phosphor screen is collected to the CMOS image sensor by a carefully designed optical system. 6 lenses are assembled to reduce the radiation damage effect and increase the resolution and sensitivity. Microfocus X-ray tube which can reach up to 5 /spl mu/m of focal spot size and microprecision motor system which can move in x-y-z direction for both alignment and magnification and rotate the,object have been adopted. Conventional 3D cone-beam Feldkamp reconstruction algorithm was used and a human cancellous bone has been imaged with this system. Currently, the resolution of this system is about 40 /spl mu/m but the application in microtomography seems very promising using this CMOS X-ray detector. |
| File Size | 592133 |
| File Format | |
| ISBN | 0780365038 |
| ISSN | 10823654 |
| DOI | 10.1109/NSSMIC.2000.949276 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-10-15 |
| Publisher Place | France |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | X-ray imaging CMOS image sensors Image resolution X-ray detectors Radiation detectors Phosphors Optical design Optical sensors Lenses Assembly systems |
| Content Type | Text |
| Resource Type | Article |
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