Nanovision Technology (Beijing) Co., Ltd.

Beijing Kingsmith Technology Co., Ltd.

Beijing Sinopharm Hundric Medline Info. Tec. Co. Ltd.

Yunxiang Li

Hongguang Cao

Zhili Cui

Hailiang Zheng

Jian Gao

Jiawei Liu

Jie Luo

Jinhui Xing

Tong Chang

Baolei Li

Yantao Hu

Xin An

Rowing machine

A multi-energy static security CT system comprises at least one N-stage image chain structure () and a baggage conveying belt () provided at an inner side at the bottom of the N-stage image chain structure (). The N-stage image chain structure () and the baggage conveying belt () are fixed at a pre-configured positions by means of a machine frame (). The N-stage image chain structures () are sequentially arranged in a forward direction of a baggage channel, and adjacent N-stage image chain structures () are offset relative to each other. By exposing radiation sources in the N-stage image chain structure () at different times, the static security CT system generates an image having a higher temporal resolution and more energy spectrum levels than an image generated by a spiral CT system. Also provided is an imaging method implemented by means of the static security CT system.

Multi-energy static security CT system and imaging method

The present invention discloses a stationary real-time CT imaging system, comprising an annular photon counting detector, an annular scanning x-ray source, and a scanning sequence controller. Under the control of the scanning sequence controller, the annular scanning x-ray source emits x-ray, and the x-ray penetrates the object being tested and projects onto the corresponding annular photon counting detector. The annular photon counting detector delivers the corresponding exposure information through the main scanning machine and the main controlling unit to a CT main machine and a human-machine interface unit. The image reconstruction is completed in the CT main machine and the human-machine interface unit. By electronically controlling and switching x-ray projection positions in order, the scanning speed is enhanced by tens of times, thereby obtaining dynamic 3D images. The use of the photon counting detector enables the access to absorption data and energy data, thereby allows for real-time data reconstruction.

Stationary real time CT imaging system and method thereof

A photon count-based radiation imaging system. The invention also relates to a method of implementing X-ray imaging in said system, and to key apparatus of said system. In the system, an x-ray source directs x-rays at a sample on a scanning platform. When the x-rays pass through said sample, photons carrying information about characteristics of the material at various spatial positions are produced. A photon count detector counts the photons on an imaging plane, obtains incident photon projection data and energy data, and transmits same to a 3D reconstruction system. The 3D reconstruction system reconstructs, on the basis of said projection data and energy data, the 3D structure and the matter composition inside the sample, then performs digital dyeing on the component parts of the sample, thereby differentiating the matter composition of the sample.

Photon count-based radiation imaging system, method and device thereof

A virtual grid imaging method capable of eliminating scattered radiation effect and an imaging system thereof for imaging with high energy rays, in which scattered rays reaching a surface of a detector are not filtered, and data of the scattered rays and straight rays are all sampled. The method includes decomposing a digital image into multi-band images from high to low according to frequencies; performing de-scattering process for low-frequency band images; performing contrast enhancement process for high-frequency band images; and merging the images of various frequency bands processed in the second and third steps, and forming an output image. In digital X-ray imaging the scattered radiation effect is eliminated. Significant reduction of the dosage of the rays, in which only one third of the required dosage of a common grid is used to obtain the same image brightness.

Virtual grid imaging method and system for eliminating scattered radiation effect

Growing community of inventors

Beijing, China

Yunxiang Li