Title:
多重モードデジタルX線撮像システム
Document Type and Number:
Japanese Patent JP4782902
Kind Code:
B2
Abstract:
A multiple mode digital X-ray imaging system providing for preprocessing "binning" of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previously summed pixel charges (by rows) on a column-by-column basis. An array, or mapping, of "defective pixel" flags is used to identify defective pixels within the detector array, with such flags being added to, or inserted into, the incoming data stream for dynamic processing along with the incoming pixel data. A buffer and filter is used to perform still image capture during the radiographic mode of operation and to recursively filter incoming data frames during the fluoroscopic mode of operation by summing a scaled amount of pixel data from prior data frames with a scaled amount of incoming pixel data from the present data frame.
Inventors:
Corbes, Richard Yee
Pavokovic, John M
Seppi, Edward Jay
Shapiro, Edward G
Pavokovic, John M
Seppi, Edward Jay
Shapiro, Edward G
Application Number:
JP52484198A
Publication Date:
September 28, 2011
Filing Date:
November 26, 1997
Export Citation:
Assignee:
VARIAN ASSOCIATES,INCORPORATED
International Classes:
G01T1/20; A61B6/00; G01T1/161; G01T1/24; G06T1/00; G06T5/20; H04N5/217; H04N5/32; H04N5/347; H04N5/367
Domestic Patent References:
| JPH0772258A | 1995-03-17 | |||
| JPH08307774A | 1996-11-22 | |||
| JPH07143403A | 1995-06-02 |
Attorney, Agent or Firm:
Akira Hori