US 8,525,122 B2 · Data acquisition

Abstract

An imaging detector includes processing electronics (208) with a thermal coefficient about equal to a negative of a summation of thermal coefficients of a photosensor array (204) and a scintillator array (202) of the detector. In another instance, the imaging detector includes an A/D converter (302) that alternately converts first charge corresponding to impinging radiation into a first signal and second charge corresponding to decaying charge into a second signal and a logic unit (308) that corrects the first signal based on the second signal. In another instance, the imaging detector includes an A/D converter (302), an integrator offset voltage signal determiner (318), and a logic unit (308), wherein the determiner (318) induces an electrical current via an offset voltage, the A/D converter (302) measures the current, and the logic unit (308) calculates a resistance of the photosensor array (204) based on the reference voltage and the measured current.

Claims15

Dependent claims

An imaging detector, comprising:

a photosensor array having a light sensitive side and an opposing read out side;
a scintillator array optically coupled to the light sensitive side of the photosensor array;
and
processing electronics electrically coupled to the read out side of the photosensor array, wherein the photosensor array, the scintillator array and the processing electronics are in thermal communication, and a value of a thermal coefficient of the processing electronics is about equal to a negative of a summation of a thermal coefficient of the photosensor array and a thermal coefficient of the scintillator array.

1 more element

An imaging system, comprising:

a radiation source that generates a radiation beam that traverses an examination region;
a source controller that pulses the radiation source;
a detector array that detects radiation that traverses the examination region;
a reconstructor that reconstructs that output of the detector array and generates imaged data indicative thereof;
wherein the detector array includes a plurality of detector tiles, a detector tile, comprising:
a photosensor array;
a scintillator array optically coupled to the photosensor array;
and
processing electronics electrically coupled to the photosensor array, wherein the photosensor array, the scintillator array and the processing electronics are in thermal communication, and a value of a thermal coefficient of the processing electronics substantially cancels thermal coefficient of the photosensor array and the scintillator array.

6 more elements

Dependencies are inferred from the claim text.

Data acquisition

Life of this patent

Data acquisition

Life of this patent

Abstract

Claims15