341results about "Radiation diagnostics testing/calibration" patented technology

A method, apparatus, system, and computer program for generating clinical information. Information indicating at least one clinical aspect of an object is received. Clinical information of interest relating to the at least one clinical aspect is generated from a plurality of projection images.

A medical imaging system is provided. Imaging detector columns are installed in a gantry to receive imaging information about a subject. Imaging detector columns can extend and retract radially as well as be rotated orbitally around the gantry. The system can automatically adjust setup configuration and an imaging operation based on subject shape estimation information.

A portable medical imaging device for performing imaging procedures. The portable medical imaging device comprises a processor configured to analyze location information associated with the portable medical imaging device and determine whether the location information is linked to a location of the performing an imaging procedure. The processor selects an imaging configuration from a plurality of imaging configurations associated with an imaging procedure to be performed in the location, wherein each imaging configuration of the plurality of imaging configurations is associated with a type of imaging procedure. The processor is further configured to load the imaging configuration to perform the imaging procedure. The portable medical device (200) for performing medical procedures further comprises at least one memory communicably coupled to the processor for storing the plurality of imaging configurations.

An imaging apparatus having an X-ray detector and an image display unit comprises first and second display magnification calculation units and a selection unit. The first display magnification calculation unit receives information of the detected image size, a binning condition and a display frame size, and thereby calculating a first display magnification so as to maximize a display area of the detected image. The second display magnification calculation unit temporarily changes the received binning condition, and by using the temporarily changed binning condition and the received detected image size, and calculates a second display magnification so as to maximize a display area. The selection unit selects the first display magnifications and the temporarily change binning condition if the first display magnification is closer to one and the second display magnification with one.

Scattered X-rays scattered by an object or a structure enter in a detector (a shift detector) for detecting the positional shift of an X-ray focal point and become a noise source, thereby deteriorating the positional shift detection precision. In particular, the estimation of the dose of scattered X-rays originating from the object is difficult prior to the measurement, and correction of the scattered X-rays is important in order to precisely calculate the positional shift of the X-ray focal point. In order to address this drawback, according to the present invention, a scattered X-ray detector 6 is provided which measures the dose of scattered rays entering in a shift detector 5 for detecting the positional shift of an X-ray focal point 9, and has a function that the output by the shift detector 5 is corrected using the scattered ray dose measured by the scattered X-ray detector.

The invention provides an installation and alignment indicating device and an installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks. The installation and alignment indicating method includes respectively installing a CT (computed tomography) center indicating assembly and a PET(positron emission tomography) center indicating assembly on a CT framework rotary portion and a PET framework; enabling a laser device of the CT center indicating assembly to emit a laser beam to the PET framework, adjusting front and back supporting point positions of the PET frameworks, aligning the laser beam to a first center indicator and a second center indicator of the PET center indicating assembly and aligning a CT rotation center to the center of a PET detector at the moment. The laser beam is used for indicating the CT rotation center. The installation and alignment indicating device and the installation and alignment indicating method have the advantages that the installation and alignment indicating device is simple in structure and convenient to adjust, influence of CT center assembly machining and installation errors can be eliminated, the alignment precision is high, and the requirement on the installation coaxiality of the center of the PET detector and the CT rotation center can be assuredly met.

A communication section having a relatively high communication speed is used for communicating a detection signal or an emission stop signal between a source control device and an electronic cassette. The detection signal is outputted from a detection pixel of the electronic cassette. The emission stop signal depends on a comparison result between an integrated value of the detection signal and an emission stop threshold value. On the other hand, a wireless communication section having a lower communication speed than that of the detection signal and the emission stop signal is used for communicating image data and the like between the electronic cassette and a console.

The embodiment of the invention discloses a parameter optimizing method, and the method is used for lowering the radiation dosage of a patient on the premise of meeting the clinical diagnosis requirement. The method includes the steps that medical equipment obtains sets of reconstruction image information according to the preset number, and each set of reconstruction image information comprises patient information, evaluating results of reconstruction images, agreement names and scanning parameters; the medical equipment determines the first object reconstruction image information in the reconstruction image information according to the patient information and the agreement names; the medical equipment obtains the target scanning parameters according to the evaluating results and the scanning parameters of all the reconstruction image information in the first target reconstruction image information; the medical equipment determines the reference dosage according to the target scanning parameters and the patient information. The embodiment of the invention further discloses the medical equipment, and the medical equipment is used for lowering the radiation dosage of the patient on the premise of meeting the clinical diagnosis requirement.

A system includes an imaging acquisition unit, a reconstruction unit, and a determination system. The imaging acquisition unit is configured to perform a scan to acquire imaging information of a patient. The reconstruction unit is configured to reconstruct an image using the imaging information. The determination system is communicatively coupled to the imaging acquisition unit and the reconstruction unit. The determination system includes at least one processor configured to: acquire performance information corresponding to the scan; determine a scan quality for the scan based on the performance information; determine an update to a protocol used to at least one of acquire the imaging information or reconstruct the image; and provide control information to at least one of the imaging acquisition unit or the reconstruction unit to implement the determined update for at least one of performing a subsequent scan or reconstructing a subsequent image.

The invention provides a bulb tube preheating method and device. The method comprises the steps of selecting to-be-selected scanning information meeting an equipment correction condition required by equipment correction as a bulb tube preheating condition from a plurality of used to-be-selected scanning information; determining at least one preheating condition until reaching a target thermal capacity value of bulb tube preheating through carrying out thermal capacity estimation according to the at least one preheating condition; and preheating a bulb tube according to the at least one preheating condition, and carrying out equipment correction corresponding to the preheating condition in the bulb tube preheating process. By using the bulb tube preheating method and device, the loss of the bulb tube is reduced, and the service life of the bulb tube can be prolonged.

The invention discloses a dosage area measuring method of digital X ray. The method includes following steps: detecting information parameters of X ray projected by an X ray source to the surface of adetector, wherein the information parameters include projection size of the X ray on the surface of the detector, exposure parameters and distance D from the X ray source to the detector; according to the information parameters, acquiring area and dosage value of the X ray projected at an opening of a beam limiting device, wherein the beam limiting device is positioned between the X ray source and the detector; according to the area and the dosage value of the X ray projected at the opening of the beam limiting device, generating dosage area value at the opening of the beam limiting device. The invention further discloses a dosage area measuring system of the digital X ray and a storage medium. A pure software calculation method is provided, and DAP dosage area product can be acquired accurately without using expensive measuring instruments.

A radiation imaging apparatus including pixels; driving lines; a driving circuit; bias lines; an acquisition unit configured to acquire an evaluation value based on a current flowing in the bias line; a determination unit configured to compare the evaluation value with a comparison target value to determine whether radiation is irradiated; a control unit configured to control the acquisition unit and the determination unit; and a storage unit configured to store the evaluation value used in the determination process, is provided. A comparison target value used in a given determination process is based on one or more evaluation values used in one or more determination processes which are performed before the given determination process and in which it is determined that radiation has not been irradiated.

Provided is an image diagnostic device with which it is possible to correct location misalignment of an image capture subject, and to improve the reliability of the result of the correction, in time series image data. An image diagnostic device is configured of: an input part (13) which receives image data input; a correction unit (14) which computes a correction vector which denotes location misalignment of an image capture subject, and selects image data used with an image correction unit; an image correction part (20) which carries out a correction process on the image data based on the correction vector and creates corrected image data; a control part (21) which controls the correction unit and the image correction part;

a memory (22) which stores the corrected image data and measurement data as stored data; an output unit (23) which outputs the stored data externally; a display unit (24) which displays the stored data; and an external input device (30) where an operator makes an input operation

In a method, computer and medical imaging apparatus for the provision of confidence information, an automatic diagnosis system is provided to the computer. Medical image data acquired from a patient are received by or accessed by the computer. A measure of confidence is determined by the computer, which describes the reliability of a correct diagnosis of the medical image data by the diagnosis system. The confidence information concerning the reliability of the correct diagnosis of the medical image data by the diagnosis system is provided as an output from the computer, wherein the confidence information is based on the determined measure of confidence.

When an AEC sensor is changed, the same AEC as before changing the AEC sensor is carried out without modifying an existing apparatus. A storage and search unit of a console acquires a source ID and searches for and extracts position information of a detection field of an old AEC sensor corresponding to the acquired source ID from source information of a storage device. An electronic cassette includes plural detection pixels as a new AEC sensor short-circuited to signal lines without passing through TFTs in the same imaging plane as pixels. A detection field selecting circuit of an AEC unit of the electronic cassette selects a detection signal from the detection pixel existing at the position of the detection field of the old AEC sensor among the detection signals of the plural detection pixels.

A radiography apparatus includes a radiation emitting device that irradiates a subject with radiation, a camera that captures an image of the subject to acquire a captured image of the subject, and a radiation detector that detects the radiation transmitted through the subject and generates a radiographic image of the subject. The driving state of at least one of the radiation emitting device or the radiation detector is controlled on the basis of whether the radiation detector is included in the captured image.

The invention relates to a nidus and/or organ modeling method and apparatus used for model body making. The nidus and/or organ modeling method used for model body making comprises the steps of performing three-dimensional simulation modeling of a nidus and/or an organ to generate a first modeling file of the nidus and/or the organ; performing medical image-based three-dimensional modeling of the nidus and/or the organ to generate a second modeling file of the nidus and/or the organ; and performing image registration and fusion on the first modeling file and the second modeling file to generate a third modeling file of the nidus and/or the organ. According to the method and the apparatus, nidus and/or organ modeling for model body making is realized through the registration and fusion of the three-dimensional simulation modeling and the medical image-based three-dimensional modeling.

The invention provides a reference detector. The reference detector is provided with an incident window used for enabling the rays to pass, the reference detector also comprises a detection component,and the rays are arranged in the incident window in a penetrating manner and are projected onto the detection component; the detection component determines a focal position of a ray source accordingto ray energy information detected in a projection region of the rays projected onto the detection component; and/or determines ray intensity of the ray source according to the ray energy informationdetected in a preset region of the detection component, wherein the incident window is provided with at least two edges extending along different directions so as to limit the projection region and/orthe preset region. Therefore, the focal position of the ray source can be tracked and the ray intensity of the ray source can be detected, and further imaging of a CT system is corrected, so that anartifact is avoided from appearing during image imaging due to ray output fluctuation, and image imaging quality is improved. The invention also provides CT equipment and a ray detection method for the ray source.