To reconstruct a tomogram with high image quality while mixing X-ray projection data of different X-ray detector apertures in a conventional scan (axial scan), a cine scan or a helical scan of an X-ray CT apparatus having multi-row X-ray detectors or two-dimensional X-ray area detectors with matrix structure represented by a flat-panel X-ray detector.
When there are a plurality of X-ray projection data passing through some pixels of a tomogram and the areas of the X-ray detector apertures of the respective X-ray projection data are different, this X-ray CT apparatus can provide the tomogram with high image quality by multiplying each of the X-ray projection data by a weighted coefficient proportional to the area ratio of the X-ray detector apertures, reconstructing a three-dimensional image, and executing the conventional scan (axial scan), the cine scan or the helical scan in the X-ray CT apparatus having the multi-row X-ray detectors or the two-dimensional X-ray area detectors with matrix structure represented by the flat-panel X-ray detector.
COPYRIGHT: (C)2007,JPO&INPIT
Masatake Nukui
Kazuhiko Sato
| JP6169912A | ||||
| JP10021372A | ||||
| JP2004073360A | ||||
| JP4226640A | ||||
| JP10075943A | ||||
| JP2002233522A | ||||
| JP2003225230A | ||||
| JP2007020906A | ||||
| JP2005254023A | ||||
| JP9187449A |
| WO2004034907A1 | ||||
| WO2004072904A1 |