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Radimeter for adjusting offset component

A technology of a ray detector and a detector, applied in the field of ray detectors, capable of solving problems such as disturbing readout detection signals, offset fluctuations, loss of dynamic range of an amplifier 307, etc.

Inactive Publication Date: 2004-05-12
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may disturb the readout detection signal (charge) captured in the photoelectric converter element 310 and preferably stored in the pixel 300
[0009] Specifically, when capacitor 310 has a small capacitance, amplifier 307 may lose its dynamic range, even if only due to fluctuations in offset due to fluctuations in the amount of charge injected on the pixel array

Method used

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  • Radimeter for adjusting offset component
  • Radimeter for adjusting offset component
  • Radimeter for adjusting offset component

Examples

Experimental program
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Effect test

no. 1 example

[0037] figure 2 is a block diagram showing an exemplary configuration of the X-ray diagnostic apparatus according to the first embodiment of the present invention. X-ray diagnostic equipment 1 comprises X-ray detector 10, X-ray generator 12, C arm driver 13, controller 14, correction data memory 15, data acquisition unit 16, preprocessing unit 17, image preparation unit 18, image Display unit 19 , image memory 20 and operating unit 21 .

[0038] The X-ray detector 10 is provided at one end (not shown) of the C-arm, and detects incoming rays such as X-rays. The configuration or structure of the X-ray detector 10 will be described in detail later.

[0039] The X-ray generator 12 is arranged at the other end of the C-arm, and is opposite to the X-ray detector 10 . The X-ray generator 12 includes an X-ray tube for emitting X-rays to a sample, such as a patient or an object to be tested. The X-ray generator 12 also includes a collimator for collimating the X-rays emitted from ...

no. 2 example

[0096] In the first embodiment of the present invention, a first adjustment area B is provided in the X-ray detector 10 . However, embodiments of the present invention may not require the function of the first adjustment region B for providing the second predetermined voltage.

[0097] see now Figure 7 , Figure 7 is a block diagram showing a typical configuration of another X-ray detector according to the second embodiment of the present invention. The X-ray detector 10' according to the second embodiment of the present invention does not include the first detection area B and the second gate driver 130, both of which are included in image 3 Shown is an X-ray detector 10 according to a first embodiment of the invention.

[0098] In addition to the operation of the first adjustment area B and the second gate driver 130, the operation of the X-ray detector 10' is the same as image 3 The operation of the illustrated X-ray detector 10 is similar. Therefore, here omit Fi...

no. 3 example

[0118] see below Figure 10 , which is a schematic diagram of various typical configurations of partial arrays of the X-ray detector 10 according to the third embodiment of the present invention.

[0119] In the first embodiment of the present invention, the second pixel 109 in the first adjustment area B is described as including the second TFT 161 and the second capacitor 162, as Figure 10 (a) shown. Further, the third pixel 104 in the second adjustment region C is described as including a third TFT 166 and a third capacitor 167, as Figure 10 (a) shown. However, the second capacitor 162 and the third capacitor 167 may not be necessary for the function of the second pixel 109 and the third pixel 104, respectively.

[0120] The second capacitor 162 and the third capacitor 167 are provided only because, since the manufacturing facility does not need to be changed, if the second capacitor 162 and the third capacitor 167 are included in the array similar to the first pixel 1...

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Abstract

A radiation detector (10) including a detection member (A), a first driver, an integration amplifier (107), and a first adjustment member (B). The detection member includes a plurality of pixels (100) and is configured to generate a first charge. Further, the first driver is configured to supply the detection member (A) with a first predetermined voltage so that the detection member generates the first charge, and the integration amplifier (107) is configured to amplify the first charge generated from the detection member (A). In addition, the first adjustment member (B) is provided in between the detection member (A) and the integration amplifier (107), and is configured to adjust an offset component included in the first charge to be amplified by the integration amplifier (107).

Description

[0001] Cross References to Related Applications [0002] This application claims priority based on prior Japanese Patent Application No. P2002-197546 filed on July 5, 2002, the entire contents of which are incorporated herein by reference. technical field [0003] The present application relates to a radiation detector comprising at least one switching element. The ray detector can be used for detecting medical images. The invention also relates to a medical imaging device using a radiation detector to detect medical images. Background technique [0004] As is well known, radiation detectors in medical imaging equipment such as X-ray diagnostic equipment employ, for example, thin film transistors (hereinafter referred to as TFTs) as switching elements for each pixel of the radiation detector. Radiation detectors are generally formed by repeating the process of forming a film on one surface of a glass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/24H01L27/14H01L27/146H01L31/09H04N5/32
CPCH04N5/361H04N5/32G01T1/24G01T1/247H04N25/30H04N23/30H04N25/671H04N25/673H04N25/78H04N25/63
Inventor 田中学富崎隆之
Owner KK TOSHIBA