Data acquisition system for computed tomography scanning and rel

Details Data acquisition system for computed tomography scanning and rel Data acquisition system for computed tomography scanning and rel

1995-05-23

1998-03-03

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, 378 19, H03M 300

Patent

active

057240370

ABSTRACT:
A computed tomography imaging method includes receiving an analog beam intensity signal from a computed tomography scanner and converting the signal into a series of digital representations of the signal at successive points in time using a predetermined sample rate. Indications that a portion of the scanner has reached a certain position relative to the beam are received asynchronously with respect to the sample rate. The value of at least one of the digital representations is adjusted in response to the indications to obtain a corrected digital representation of the analog signal.

REFERENCES:
patent: 4246571 (1981-01-01), Gariazzo
patent: 4905005 (1990-02-01), Arribard et al.
patent: 4937577 (1990-06-01), Rich et al.
patent: 5142286 (1992-08-01), Ribner et al.
patent: 5497152 (1996-03-01), Wilson et al.
"Designer's Reference Manual", Analog Devices Inc., Norwood, MA, 1996; Section 2, pp. 43-44 and 103-104.

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