摘要:
The invention provides an active collimator system (100) having a coded collimator aperture (111), the active collimator system (100) comprising scintillator bars (110) and photosensor units (130), wherein the scintillator bars (110) are configured to absorb incoming gamma rays (160) and scintillate, thereby emitting scintillation photons (161), wherein the scintillator bars (110) are further configured to define the coded collimator aperture (111), wherein the photosensor units (130) are configured to detect the scintillation photons (161), and wherein the photosensor units (130) are directed to scintillator bar ends (112) of the scintillator bars (110).
摘要:
The present disclosure relates to a system for imaging. The system may include a supporting assembly and a detector assembly. The supporting assembly may include a detection region to accommodate a subject. The detector assembly may surround the detection region. The detector assembly may be configured to detect radiation rays emitted from the subject located within the detection region. The detector assembly may include a plurality of detector rings. Each detector ring may include a scintillator array and a plurality of photosensors. The plurality of detector rings may be arranged on the supporting assembly in an axial direction of the supporting assembly to form an axial field of view (FOV) having a length no less than 0.75 meters.
摘要:
The present disclosure relates to a method, system and non-transitory computer readable medium. In some embodiments, the method includes: acquiring image data of a target subject positioned on a scanning table; determining, by a processor, first position information of the target subject based on the image data; determining, by the processor, second position information related to a scan region of the target subject based on the image data; and scanning, using an imaging device, the target subject based on the first position information and the second position information.
摘要:
The present disclosure relates to a method for planning an imaging scan protocol to be performed by a scanning imaging system (100), the method comprising simulating for a patient (118) by a virtual reality system (200) an imaging scan, the imaging scan following a chosen imaging scan protocol (141), recording physiological data (152) of the patient (118) generated in response to the simulating and modifying the chosen imaging scan protocol (141) based on the physiological data (152).
摘要:
The present disclosure relates to a method and system for registering multi-modality images. The method may include: acquiring a first image relating to a registration model, wherein the registration model includes a plurality of reference objects; acquiring a second image relating to the registration model; determining a set of reference points based on the plurality of reference objects; determining a set of mapping data corresponding to the set of reference points in the first image and the second image; and determining one or more registration parameters based on the set of mapping data.
摘要:
The present invention provides a composition comprising the compound having the structure: Formula or a salt of the compound; 4-amino-2- [ 19 F] -fluorobenzoic acid or a salt of 4-amino-2- [ 19 F] -fluorobenzoic acid; and at least one acceptable carrier.
摘要:
A system may transform sensor data from a sensor domain to an image domain using data-driven manifold learning techniques which may, for example, be implemented using neural networks. The sensor data may be generated by an image sensor, which may be part of an imaging system. Fully connected layers of a neural network in the system may be applied to the sensor data to apply an activation function to the sensor data. The activation function may be a hyperbolic tangent activation function. Convolutional layers may then be applied that convolve the output of the fully connected layers for high level feature extraction. An output layer may be applied to the output of the convolutional layers to deconvolve the output and produce image data in the image domain.
摘要:
An imaging system is provided that includes a gantry, plural radiation detector head assemblies, a cooling unit, and a manifold. The radiation detector head assemblies are disposed about a bore of the gantry. Each radiation detector head assembly includes a detector housing and a rotor assembly. The rotor assembly is configured to be rotated about an axis. The rotor assembly includes a detector unit that in turn includes an absorption member and associated processing circuitry. The cooling unit is mounted to the gantry and is configured to provide an output flow of air at a controlled temperature. The manifold is coupled to the cooling unit and the plural radiation detector head assemblies, and places the cooling unit and radiation detector head assemblies in fluid communication with each other. The output flow of air from the cooling unit is delivered to the plural radiation detector head assemblies.
摘要:
A system (100) and a method for medical imaging are provided. An imaging device having a table may be provided. Scans of a subject located on the table at multiple table positions may be performed based on a scanning protocol, each scan covering a portion of the subject. Data may be acquired based on the scans of the subject. An image may be reconstructed based on the acquired data.
摘要:
The present disclosure relates to magnetic resonance imaging (MRI) methods comprising (i) obtaining a baseline chemical exchange saturation transfer (CEST) MRI image of a patient, (ii) administering an effective amount of a non-nutritive sweetener to the patient, and (iii) obtaining one or more test CEST MRI image of the patient subsequent to the administering step (ii); wherein the step (i) and (iii) acquisition parameters are substantially the same. The non- nutritive sweetener may include a natural or artificial sugar alcohol, polyol, or combinations or derivatives thereof.