Title:
X-RAY FLUOROSCOPIC IMAGING
Document Type and Number:
WIPO Patent Application WO2003045246
Kind Code:
A3
Abstract:
A system for x-ray fluoroscopic imaging of bodily tissue in which a scintillation screen and a charge coupled device (CCD) is used to accurately image selected tissue. An x-ray source generates x-rays which pass through a region of a subject's body, forming an x-ray image which reaches the scintillation screen. The scintillation screen re-radiates a spatial intensity pattern corresponding to the image, the pattern being detected by the CCD sensor. In a preferred embodiment the imager uses four 8 x 8-cm three-side buttable CCDs coupled to a CsI:Tl scintillator by straight (non-tapering) fiberoptics and tiled to achieve a field of view (FOV) of 16 x 16-cm at the image plane. Larger FOVs can be achieved by tiling more CCDs in a similar manner. The imaging system can be operated in a plurality of pixel pitch modes such as 78,156 or 234- mu m pixel pitch modes. The CCD sensor may also provide multi-resolution imaging. The image is digitized by the sensor and processed by a controller before being stored as an electronic image. Other preferred embodiments may include each image being directed on flat panel imagers made from but not limited to, amorphous silicon and/or amorphous selenium to generate individual electronic representations of the separate images used for diagnostic or therapeutic applications.
Inventors:
KARELLAS ANDREW (US)
VEDANTHAM SRINIVASAN (US)
SURYANARAYANAN SANKARARAMAN (US)
VEDANTHAM SRINIVASAN (US)
SURYANARAYANAN SANKARARAMAN (US)
Application Number:
PCT/US2002/037435
Publication Date:
August 28, 2003
Filing Date:
November 21, 2002
Export Citation:
Assignee:
UNIV MASSACHUSETTS MEDICAL (US)
KARELLAS ANDREW (US)
VEDANTHAM SRINIVASAN (US)
SURYANARAYANAN SANKARARAMAN (US)
KARELLAS ANDREW (US)
VEDANTHAM SRINIVASAN (US)
SURYANARAYANAN SANKARARAMAN (US)
International Classes:
A61B6/00; H01L27/148; H01L31/0232; (IPC1-7): A61B6/00
Domestic Patent References:
| WO1997042877A1 | 1997-11-20 |
Foreign References:
| US6031892A | 2000-02-29 | |||
| US5864146A | 1999-01-26 |
Download PDF: