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Medical imaging method and photon counting energy spectrum CT imaging device

A photon counting and medical imaging technology, applied in the field of medical imaging, can solve the problems of difficult data link design, high hardware design requirements, affecting image quality, etc., to reduce the amount of scanning data, meet the actual clinical needs, and ensure the spatial resolution of images. rate effect

Pending Publication Date: 2019-06-25
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the methods to solve the large amount of data and the difficulty in data link design of photon counting spectral CT mainly focus on improving the data transmission rate, compressing the output data and prolonging the CT rotation time, etc.
Improving the data transmission rate requires high hardware design of the data acquisition system, which will significantly increase the hardware cost
Compressing data will result in data loss, causing data distortion and affecting image quality
Prolonging the CT rotation time is only suitable for scanning non-moving parts, while scanning moving objects, such as scanning the heart, will produce motion artifacts

Method used

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  • Medical imaging method and photon counting energy spectrum CT imaging device

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Experimental program
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Embodiment 1

[0022] figure 1 It is a flow chart of the medical imaging method provided by Embodiment 1 of the present invention. This embodiment is applicable to imaging of medical equipment, especially applicable to imaging of photon counting spectral CT imaging equipment. The method can be performed by a photon counting energy spectrum CT imaging device, the device can be implemented by hardware and / or software, and the device can be integrated into a device (such as a photon counting energy spectrum CT imaging device) for execution, and specifically includes the following steps :

[0023] Step 101, setting the target detection parameters of the photon counting detector.

[0024] Wherein, the target detection parameters include one or more of detection unit parameters, energy interval parameters, and detector enabling parameters.

[0025] Among them, the photon counting detector has energy discrimination capability and is equipped with an application-specific integrated circuit. The X-...

Embodiment 2

[0045] Figure 2a It is a flowchart of a medical imaging method provided by Embodiment 2 of the present invention. On the basis of the above embodiments, in this embodiment, optionally, the setting of the target detection parameters of the photon counting detector includes: Select one of the multiple detector modes, and use the preset detection parameters of the selected detector mode as the target detection parameters of the photon counting detector.

[0046] On this basis, further, the detector mode includes a first mode and a second mode, wherein the detector counting unit size of the first mode is smaller than the detector counting unit size of the second mode.

[0047] On this basis, further, the number of energy intervals in the first mode is lower than the number of energy intervals in the second mode.

[0048] On this basis, further, the number of pixel rows enabled in the photon counting detector in the first mode is smaller than the number of pixel rows enabled in t...

Embodiment 3

[0080] image 3 A schematic structural diagram of a photon counting energy spectrum CT imaging device provided in Embodiment 3 of the present invention, as shown in image 3 As shown, the device includes a radiation source 31 , a photon counting detector 32 and a detector control unit 33 .

[0081] Wherein, the ray source 31 is used to generate X-ray photons;

[0082] A photon counting detector 32, comprising a plurality of detector pixels, is used to generate scan data according to detection of X-ray photons passing through the target object; the photon counting detector can divide one or more energy intervals according to the energy of the photons, and Counting the detected photons in each energy interval; the photon counting detector is configured to adjust detection parameters;

[0083] The detector control unit 33 is configured to configure detection parameters of the photon counting detector according to instructions.

[0084] Optionally, configuring the detection param...

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Abstract

Embodiments of the invention disclose a medical imaging method and a photon counting energy spectrum CT imaging device. The method includes: setting a target detection parameter of a photon counting detector, wherein the target detection parameter includes one or more of a detection unit parameter, an energy interval parameter, and a detector activation parameter; counting photons in each energy interval according to the target detection parameter to obtain scan data; reconstructing a medical image according to the scan data. According to the technical scheme, the problems that the data size of photon counting energy spectrum CT is large and a data link design is difficult in a conventional solution, and the image data is reduced while the spatial resolution of the image cannot be ensuredare solved, detection parameters of the photon counting detector are set according to clinical needs, the actual clinical needs are met better, and the image data size is reduced while the spatial resolution of the image is ensured.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of medical imaging, in particular to a medical imaging method and photon counting energy spectrum CT imaging equipment. Background technique [0002] Photon counting energy spectrum CT (Computed Tomography, electronic computer tomography) has the advantages of material composition analysis, reducing radiation dose to patients, and improving image spatial resolution. Photon counting spectral CT has become the development direction of next-generation CT, which is the common concern of academic and industrial circles at home and abroad. Among them, PCD (Photon counting detector, photon counting detector) is the most critical and core technology of photon counting spectral CT. In order to improve the spatial resolution of the image, the PCD pixel size is generally designed to be hundreds of microns, which is much smaller than the traditional CT detector pixel size (1x1mm 2 ), which means ...

Claims

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Application Information

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IPC IPC(8): A61B6/03
Inventor 李晓超
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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