X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1989-10-04
1990-11-06
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 4, G01N 2300
Patent
active
049691660
ABSTRACT:
A computer tomography apparatus has a radiation detector formed by a row of detector elements, and a data acquisition system having a detector channel for each detector element. A multiplexer samples the signals of the detector elements. To avoid image artifacts due to differing disturbing influences in the transmission and conversion of the measured values for the individual detector channels, the multiplexer has a number of levels, and is controlled so that sampling of the individual detector channels takes place in changing sequences. A bank of analog-to-digital converters follows the multiplexer, and the allocation of the converters in the bank to groups of detector channels is also changed during data acquisition. The output signals of the analog-to-digital converters, which represent individual outputs for each channel, are entered into a memory in proper numerical sequence.
REFERENCES:
patent: 3988730 (1976-10-01), Valker
patent: 4035647 (1977-07-01), Hounsfield et al.
patent: 4066900 (1978-01-01), LeMay
patent: 4091286 (1978-05-01), Logan et al.
patent: 4134018 (1979-01-01), Weinkauf et al.
patent: 4220863 (1980-09-01), McBride et al.
patent: 4377868 (1983-03-01), Mueller
patent: 4413351 (1983-11-01), Kowalski
patent: 4484340 (1984-11-01), Yamaguchi et al.
Church Craig E.
Siemens Aktiengesellschaft
LandOfFree
Computer tomography apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer tomography apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer tomography apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1312043