X-ray data acquisition system and method for calibration

Details X-ray data acquisition system and method for calibration X-ray data acquisition system and method for calibration

1976-07-12

1978-01-10

Wise, Edward J.

Boots, shoes, and leggings

364515, 250445T, 340347CC, H03K 1302, G01N 2300

Patent

active

040683060

ABSTRACT:
A tomographic x-ray imaging system comprises a large plurality of parallel data acquisition channels which integrate and digitize signals from an array of x-ray detectors. Calibration pulses are injected into each data acquisition channel to permit measurement of drift in electronic gain and dc offset parameters. Separate x-ray detectors continuously monitor the intensity of the x-ray source.
The measured values for channel gains, dc offsets, and source intensity are fed to a digital computer where they are automatically combined with x-ray transmission data to compensate for system drift and extend the period between calibration measurements.

REFERENCES:
patent: 3541320 (1970-11-01), Beall
patent: 3667055 (1972-05-01), Uchida
patent: 3879668 (1975-04-01), Edwards
patent: 3893103 (1975-07-01), Prill
patent: 3940625 (1976-02-01), Hounsfied
patent: 3973128 (1976-08-01), LeMay
patent: 3996467 (1976-12-01), Froggatt et al.
patent: 4002911 (1977-01-01), Hounsfield
patent: 4008400 (1977-02-01), Brunnett et al.

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