12 results about "Spect imaging" patented technology

Systems and techniques are described herein for foveated imaging. For instance, a method for foveated imaging is provided. The method may include determining a first region of interest within a first image based on a gaze of a user relative to the first image; clustering pixels of the first image into a one or more clusters of pixels based on a comparison of one or more characteristics of pixels of the first image; identifying a cluster of pixels from among the one or more clusters of pixels based on an intersection over union of the first region of interest and the cluster of pixels; generating a second region of interest based on the first region of interest and the cluster of pixels; and capturing a second image based on the second region of interest.

This application relates to a SPECT imaging system, imaging method, and SPECT imaging device. The SPECT imaging system includes multiple imaging modules and a data integration module. Each imaging module scans and images a local area of ​​the object under test, obtaining local imaging data. The data integration module is communicatively connected to the multiple imaging modules and integrates the multiple local imaging data to obtain a complete image. Each imaging module in this application can scan and image a local area of ​​the object under test, thereby obtaining corresponding local imaging data. Simultaneously, the data integration module integrates the multiple local imaging data to obtain a complete image. Since each imaging module includes a motion control unit and a probe, their scanning processes are relatively independent. When multiple areas need to be scanned, multiple imaging modules can perform scanning simultaneously, thus enabling parallel scanning of the object under test and improving scanning efficiency.

This invention provides a dual-aperture multi-pinhole collimator, comprising: a collimator plate; and multiple pinholes of two different apertures spaced apart on the collimator plate. During a single imaging process, radioactive rays passing through the imaging fields of different apertures simultaneously form corresponding and non-overlapping projection responses on the detector. Of the two apertures, the first aperture is smaller than the second aperture. The first aperture is determined based on the desired system spatial resolution, and the second aperture is determined based on the desired detection efficiency. This invention also proposes a SPECT imaging system based on the aforementioned multi-pinhole collimator. Its imaging module obtains imaging results from the data required for tomographic reconstruction using an improved MLEM iterative algorithm. The improved MLEM iterative algorithm introduces weighting factors into the original MLEM iterative algorithm, weighting the projection data of the dual-aperture pinholes and the corresponding system transmission matrix elements respectively. This invention improves detection sensitivity while maintaining spatial resolution.

A detector for an SPECT imaging system, an SPECT probe, and an imaging system and method. The detector comprises: an SiPM detector array (1-2), a CsI crystal array (1-1), and a preprocessing circuit board (1-3). The CsI crystal array (1-1) comprises a plurality of strip-shaped crystals (3-1); each strip-shaped crystal (3-1) comprises at least one crystal light exit surface (3-2); and one crystal light exit surface (3-2) of each strip-shaped crystal (3-1) is coupled to the SiPM detector array (1-2). An electrical signal of each SiPM detector pixel (2-3) in the SiPM detector array (1-2) is independently outputted by means of a detector base plate (2-4) in the SiPM detector array (1-2). The preprocessing circuit board (1-3) combines electrical signals of all SiPM detector pixels (2-3) and outputs a number of signals equal to or fewer than the number of the SiPM detector pixels (2-3).

This invention discloses a radiotracer targeting pan-KRAS mutant proteins, its preparation method, and its applications. The tracer uses small molecule ligands that specifically recognize multiple KRAS mutant proteins as targeting modules, and is coupled to diagnostic radionuclides through an optimized linkage system. This tracer is independent of specific mutation sites and can broadly and specifically bind to multiple high-frequency KRAS mutant subtypes, including G12C, G12D, and G12V. Based on PET / SPECT imaging, this tracer enables rapid, non-invasive, systemic, visualized, and quantitative assessment of KRAS mutant protein expression load in living tumors, overcoming the invasiveness, spatiotemporal limitations, and tumor heterogeneity challenges of traditional biopsies. It provides a novel molecular imaging tool for accurate companion diagnosis of KRAS-mutant tumors, screening of patients benefiting from pan-KRAS inhibitors, and monitoring efficacy, possessing significant clinical translational value.

This application relates to a camera module, its manufacturing method, and an electronic device. The camera module includes: an optical path reversing component; a lens assembly disposed on the optical path reversing component; a photosensitive component disposed on the optical path reversing component, with the photosensitive component and the lens assembly located on the same side of the optical path reversing component; a spacer disposed on the optical path reversing component, with a portion of the spacer located between the optical path reversing component and the lens assembly, and a portion located between the optical path reversing component and the photosensitive component; and a light-shielding layer located between the lens assembly and the photosensitive component, the light-shielding layer sealing the gap between the lens assembly and the photosensitive component and abutting against the spacer. This application isolates the light-incident space and the light-exit space through the spacer and the light-shielding layer, preventing blemishes from moving from the light-incident space into the light-exit space, thereby reducing the probability of blemish imaging in the camera module.

The present application relates to the technical field of seismic exploration data processing, and particularly relates to a method for identifying abnormal shot deviation results from massive shot domain seismic imaging data. The method mainly solves the problem that the existing seismic imaging data processing method cannot accurately identify single shot data with abnormal amplitude interference in massive data. The method comprises the following steps: performing seismic imaging processing on common shot point gathers by a computing node; performing stacking processing on common shot point imaging data; performing stacking processing on the computing nodes with abnormal amplitude deviation results step by step, identifying the common shot point gather numbers with abnormal amplitude deviation results; and re-performing migration processing on the identified common shot point gather number data with abnormal interference. The method can efficiently identify and eliminate single shot data with abnormal amplitude interference in shot domain imaging results, and can accurately lock single shot data with abnormal migration of CPU or GPU high-performance computing nodes, thereby ensuring the accuracy and quality of the imaging results.

The utility model discloses a kind of LED light-throwing reflection multi-point imaging module, belong to the technical field of light, including mounting frame body, the bottom of the mounting frame body is provided with light inlet pipeline, the top of the mounting frame body is provided with cylinder, the prism that the light entering from light inlet pipeline is split is provided in the cylinder, the driving member that the driving prism rotation is provided on the mounting frame body. Through single light source input, prism dynamic light splitting and reflection enhancement design, realize the multi-point imaging effect of low cost, high dynamic, improve light performance.

This invention relates to the field of medical device technology, and in particular to a motion module integrated with a detection unit and a SPECT imaging system. The system includes a module support, a detection unit, a first flexible transmission component, a second flexible transmission component, a drive unit, and a displacement detection unit; it also includes an overall base, a rotating base, multiple sets of independent angle adjustment units, and a contour scanning unit. By integrating multiple detection units into a motion module, this invention enables the SPECT imaging system to have a shorter scanning time than traditional SPECT, and allows for rapid acquisition of data from various parts of the body and dynamic imaging of the whole body during continuous bed movement. Furthermore, the flexible adjustment of multiple detection units as needed greatly optimizes the workflow and improves equipment utilization.

A vertical plane rotation type SPECT imaging device, the imaging device comprising a mounting back plate (1), a vertical guide rail module (2), a ray source (3), a left SPECT detector module (4), a right SPECT detector module (5), and a CT flat panel detector module (6). The rear side of a left detector part (431) on the left detector is inserted and fixed by a left inner rod (432) and can rotate in a vertical plane. The rear side of a right detector part (531) on the right detector is inserted and fixed by a right inner rod (532) and can rotate in a vertical plane. A normalization processing method of the vertical plane rotation type SPECT imaging device, which is implemented for the imaging device, comprises an upward homing step, a horizontal displacement step, a test preparation step, a receipt collection step, and a normalization step.

A system for low-count quantitative single-photon emission computed tomography (LC-QSPECT) is provided. The system is programmed to a) store a computer tomography (CT) scan of a subject being examining including a plurality of defined volumes of interest (VOIs) of the subject being examined; b) model a system matrix based on the stored CT, wherein the model describes the probability that photons emitted from each of the defined VOIs are detected in different projection bins, wherein a plurality of projection bins are defined around the subject and the defined VOIs; c) adjust the model with analysis of stray-radiation noise around the subject; d) detect, by the one or more sensors, one or more photons being emitted by an alpha-particle-emitting isotope; and e) execute the adjusted model with the one or more detected photons as inputs to determine a source VOI of the detected photons.

A lateral extension SPECT imaging device, the imaging device comprising a mounting back plate (1), a vertical guide rail module (2), a ray source (3), a left SPECT detector module (4), a right SPECT detector module (5), a CT flat panel detector module (6). The rear side of a left detector part (431) on the left detector is rotatably fixed by a left inner shaft (432), and the front side of the left detector part is fixed by a left upper pin (433) and a left lower pin (434) respectively. The rear side of a right detector part (531) on the right detector is rotatably fixed by a right inner shaft (532), and the front side of the right detector part is fixed by a right upper pin (533) and a right lower pin (534) respectively. A normalization processing method of the lateral extension SPECT imaging device, which is implemented for the imaging device, comprising an upward homing step, a horizontal displacement step, a test preparation step, a receipt collection step, a normalization step.