226 results about "Ct examination" patented technology

A body scanning system includes a CT transmitter and a PET configured to radiate along a significant portion of the body and a plurality of sensors configured to detect photons along the same portion of the body. In order to facilitate the efficient collection of photons and to process the data on a real time basis, the body scanning system includes a new data processing pipeline that includes a sequentially implemented parallel processor that is operable to create images in real time notwithstanding the significant amounts of data generated by the CT and PET radiating devices.

A diagnostic imaging device is provided to detect cancers in early stages with a high degree of accuracy while minimizing the risk of X-ray exposure that can be caused by the X-ray CT examination, taking advantage of the PET examination which provides a means of efficient early detection of cancers while minimizing the risk of radiation exposure. A PET gantry 20 and a CT gantry 30 are arranged sequentially relative to a common examination table 10, a control unit provided in a console 40 controlling the examination table 10, the PET gantry 20, and the CT gantry 30, and an examination subject 13 laid on a top board 11 of the examination table 10 is inserted into a tunnel 21 of the PET gantry 20 for collecting PET data in order to reconstruct a PET image, display the PET image on an image monitor provided in the console 40, allow a doctor to make a determination as to whether the examination subject 13 should be further subjected to a CT examination by sending it into a tunnel 31 of the CT gantry 30, and allow necessary actions to be taken in accordance with the determination.

An X-ray CT image of a low spatial resolution image is acquired by employing a PET-X-ray CT examination apparatus. Also, a PET image is acquired by employing the PET-X-ray CT examination apparatus. Furthermore, an X-ray CT image of a high spatial resolution image is acquired by employing another X-ray CT examination apparatus. Then, the X-ray CT image equal to the low spatial resolution image is corrected by employing the X-ray CT image, so that an X-ray CT image equal to a high spatial resolution image is obtained. Since a positional relationship of the resulting X-ray CT image with respect to the PET image can be grasped, this PET image can be simply synthesized with the X-ray CT image like an image.

The invention discloses a container CT (Computed Tomography) examination system. The container CT examination system comprises a scanning device, wherein the scanning device comprises a radiation source device and a detector array, wherein the scanning device further comprises a first orbit and a second orbit which are arranged on an inner layer and an outer layer; the radiation source device is arranged on the first orbit; the detection array is arranged on the second orbit. According to the container CT examination system, the radiation source device and the detector array are supported by different orbits respectively, so that the current situation that a circular rotary frame needs to carry great load is improved; specific to each of the first orbit and the second orbit, the strength requirement on the circular rotary frame is lowered greatly. Compared with a container CT examination system in the prior art, the container CT examination system has the advantage that the machining difficulty is lowered effectively.

A diagnostic imaging device is provided to detect cancers in early stages with a high degree of accuracy while minimizing the risk of X-ray exposure that can be caused by the X-ray CT examination, taking advantage of the PET examination which provides a means of efficient early detection of cancers while minimizing the risk of radiation exposure. A PET gantry 20 and a CT gantry 30 are arranged sequentially relative to a common examination table 10, a control unit provided in a console 40 controlling the examination table 10, the PET gantry 20, and the CT gantry 30, and an examination subject 13 laid on a top board 11 of the examination table 10 is inserted into a tunnel 21 of the PET gantry 20 for collecting PET data in order to reconstruct a PET image, display the PET image on an image monitor provided in the console 40, allow a doctor to make a determination as to whether the examination subject 13 should be further subjected to a CT examination by sending it into a tunnel 31 of the CT gantry 30, and allow necessary actions to be taken in accordance with the determination.

The invention discloses a novel CT examination bed which comprises a base of a U-shaped structure. Transverse sliding rail grooves are symmetrically formed in the two sides of the upper surface of the base. Linear motors are installed in the sliding rail grooves in a matched mode. The upper ends of the linear motors are fixedly connected sliding blocks. The upper surfaces of the sliding blocks are fixedly connected with an n-shaped frame. A scanning device of a U-shaped structure is installed in the n-shaped frame in a matched mode. The two sides of the outer wall of the scanning device are connected with the n-shaped frame through rotating shafts. The rotating shafts are connected with servo motors inside the n-shaped frame through speed reducers. The servo motors and the linear motors are connected with a controller on the side face of the base through wires. The side wall of each rectangular groove is provided with a vertical sliding groove. A sliding block of a bearing strip is installed inside each vertical sliding groove in a matched mode. According to the novel CT examination bed, a patient can be examined without bed shifting, using difficulty is lowered, and the multi-angle and all-round examination ability is achieved.

The invention provides a children examination and treatment bed. The children examination and treatment bed comprises a bed body. The bed body comprises a trunk supporting board, a head and neck supporting board, two upper limb supporting boards and two lower limb supporting boards. The head and neck supporting board is connected to one end of the trunk supporting board. The two upper limb supporting boards are connected to two opposite sides of the trunk supporting board respectively in a rotary mode. The two lower limb supporting boards are connected to the end, away from the head and neck supporting board, of the trunk supporting board in a rotary mode. The upper limb supporting boards and / or the lower limb supporting boards can rotate around a shaft in the vertical direction relative to the trunk supporting board. The trunk supporting board is provided with a trunk restraint strap. The head and neck supporting board is provided with a head restraint strap. Each upper limb supporting board is provided with an upper limb restraint strap. Each lower limb supporting board is provided with a lower limb restraint strap. The children examination and treatment bed can fix the limbs of children and facilitate CT examination, infusion, blood drawing and the like.

The invention discloses an intellectualized orthopaedics implant for reconstruction after centrum excision. The intellectualized orthopaedics implant comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is provided with an opening in one end, and an end surface at the other end, and the inner sleeve is provided with an opening in one end, and an end surface at the other end; theopening end of the outer sleeve is mounted at the opening end of the inner sleeve in a sleeving manner; the outer sleeve is in clearance fit with the inner sleeve; a stress sensor is arranged in a gap between the outer sleeve and the inner sleeve; a stress sensor and a displacement sensor are arranged at a supporting component between the opening end of the inner sleeve and the outer sleeve; anda gravity sensor is arranged on the inner wall of the outer sleeve or the inner sleeve; a plurality of through holes are formed in the side wall of the outer sleeve and / or the inner sleeve, communicate with an inner cavity of the outer sleeve and / or the inner sleeve, and are formed in the periphery of the outer sleeve and / or the inner sleeve. According to the intellectualized orthopaedics implantdisclosed by the invention, under the situation that X-ray examination and CT examination are not performed, whether a patient is subjected to bone fusion or not can be accurately judged, the precision rate for judging bone fusion is increased, and the own position, the stress situation and the like of the orthopaedics implant after transplanting can be recorded and fed back.

The invention discloses a CT (computed tomography) shelter for a shelter medical system. The CT shelter comprises a vehicle chassis with high strength of mechanical property, a CT examination cabin body which is arranged above the vehicle chassis for CT examination, a cab which is arranged in front of the vehicle chassis in a matched way, and wheels which are arranged below the vehicle chassis in the matched way; an air conditioner outdoor unit, a cold start device and an independent heater device are arranged on the top of the cab in the matched way; and after a radiation protection layer is arranged in the CT examination cabin body, vehicle type CT equipment is mounted, a balance rod capable of enabling the ground where the CT examination cabin body in to be adjusted to a horizontal direction according to a different geographical environment is further arranged, and a power supply system for supplying electricity for the vehicle type CT equipment is further arranged. According to the CT shelter for the shelter medical system, the defects of weak emergency capability, poor safety reliability, weak environmental adaptability, poor stability and the like in the prior art can be overcome, and the advantages of strong emergency capability, good safety reliability, strong environmental adaptability and excellent stability are realized.

The invention discloses a three-dimensional image reconstruction and positioning analysis system used in a puncture surgery robot CT cabin in the technical field of CT-guided percutaneous lung puncture biopsy. The system includes a CT scanner; the CT scanner is in electrical output connection with a data reading module; a central processor is in electrical input connection with an electromagneticpositioning module and a path planning module; the central processor is in electrical output connection with an image processing module, a control module and a display module; and the control module is in electrical output connection with a puncture robot. According to the system, marking points are no longer placed on the body surface of a patient on hardware, but six marking points are fixed toa CT examination bed at the same time, and an improved D-H reverse motion algorithm is applied to the algorithm, so that a CT image guides the robot to conduct percutaneous lung puncture operation, the puncture precision can be well guaranteed through a positioning mechanism, especially the success rate of one-time puncture can be effectively guaranteed, and the system has high robustness.

A method and a computer system (10) are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object (P) with the original projection data records of at least one detector (3,5); determining the scattered radiation generated by each emitter (2,4) exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector (3,5); generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object (P) with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.

A method for automatic detection of a contrast agent inflow in a blood vessel of a patient with a CT system, and CT system for carrying out this method, are disclosed. At least one embodiment of the invention relates to a method which determines the position of at least one blood vessel A in section image representations S in a CT examination without external intervention with the aid of an active shape or active appearance model, measures the inflow of contrast agent in this region in a targeted way and automatically initiates at least one action in the event of inflowing contrast agent.

An X-ray CT image of a low spatial resolution image is acquired by employing a PET-X-ray CT examination apparatus. Also, a PET image is acquired by employing the PET-X-ray CT examination apparatus. Furthermore, an X-ray CT image of a high spatial resolution image is acquired by employing another X-ray CT examination apparatus. Then, the X-ray CT image equal to the low spatial resolution image is corrected by employing the X-ray CT image, so that an X-ray CT image equal to a high spatial resolution image is obtained. Since a positional relationship of the resulting X-ray CT image with respect to the PET image can be grasped, this PET image can be simply synthesized with the X-ray CT image.

The invention belongs to the technical field of medical apparatuses, and particularly relates to an anti-radiation abdomen CT (computed tomography) examination bed. The anti-radiation abdomen CT examination bed comprises a base, a bed plate, a lower protection mechanism and an upper protection mechanism, wherein the bed plate is glidingly connected with the base; the base is integrally formed by asupport table and a support horizontal plate; the support table is arranged in the middle part of the lower surface of the support horizontal plate; the left side wall and right side wall of the support horizontal plate are respectively provided with a first slide groove in the plate extending direction; the bed plate is integrally formed by an upper horizontal plate, four vertical columns, a lower horizontal plate and two strip-shaped slide blocks; the four vertical columns are positioned at the opposite four corners of the upper horizontal plate and the lower horizontal plate; through holesare formed in the corresponding positions of the front and back two vertical columns; the bed plate is glidingly matched with the first slide grooves via the strip-shaped slide blocks. The anti-radiation abdomen CT examination bed has the advantages that the distance between two internal C-shaped plates can be freely adjusted according to the difference of abdomens of patients, so as to meet theabdomen CT examination requirement of the different patients; the wearing of lead clothes is not needed for the patients.

An X-ray CT examination installation, having an X-ray tube including a focus, that creates a fan beam or a conical beam which X-rays the whole of a detector at a fixed distance from the focus, and an examination carriage, for supporting an object to be examined, the carriage having an axis of rotation perpendicular to the fan beam, wherein the examination carriage can be fixed inside the fan beam close to an edge axis which meets the detector at the edge, and can be moved on a measuring line that centrally runs at an angle to a central axis which meets the detector.The invention also relates to a CT method of examining objects, in particular of various sizes, by means of an X-ray CT examination installation generally identified above.

The invention provides an infant regulative CT examination protecting cover which is provided with a back plate for an infant to lie on. A first sliding way is arranged on the position corresponding to the part from the chest to the legs of the infant on the inner layer of the back plate. A chest lead plate and a belly lead plate of the inner layer of the back plate slide in the length direction of the back plate in the first sliding way respectively. Second sliding ways which are parallel to the first sliding way are arranged on the two sides of the back plate corresponding to the part from the chest to the legs of the infant. An arch-shaped chest protecting cover and an arch-shaped belly protecting cover are arranged in the second sliding ways in a sliding mode though the two ends respectively. During using, by flexibly adjusting the positions of the chest protecting cover, the belly protecting cover and the corresponding lead plates, the head or the chest or the belly of the infant can be selectively subjected to CT examination.

The invention discloses a CT examination protecting apparatus, which comprises a first bed board, wherein two protective covers are arranged on the first bed board and the two protective covers are identical in setting; the protective covers comprise second anti-radiation plates; supporting plates are arranged on both sides of the first bed board; a first sliding rail is arranged on the top face of each of the supporting plates; each of the anti-radiation plates is arranged on the corresponding first sliding rail by virtue of a first sliding block; the two anti-radiation plates are perpendicular to the first bed board; the ends, away from the first bed board, of the two first anti-radiation plates are connected by virtue of second anti-radiation plates; the sides, close to the first bed board, of the two first anti-radiation plates are provided with second sliding rails; third anti-radiation plates are connected to the second sliding rails by virtue of second sliding blocks; and the ends, away from the first bed board, of the two third anti-radiation plates are connected by virtue of fourth anti-radiation plates. The protecting apparatus disclosed by the invention is simple in structure and convenient to use; and the protecting apparatus can be used for covering a human body, so that the lesion location of the human body is protected from radiation and subsequent injury to a patient is avoided.

Provided is an intervention type in-vivo real-time tumor imaging method and system. The imaging method comprises the steps that the polarization directions of terahertz and infrared source emergent light waves are adjusted, the light waves are conducted to the tissue to be detected through an array optical-fiber bundle, signals reflected by the tissue are converted into vertically polarized waves and then enter a detector for imaging in an incidence mode. The imaging system comprises a terahertz and infrared source, a terahertz detector, a reshaping unit, a polarization unit, a polarization conversion unit and an intervention unit. The system works in a terahertz and infrared frequency band, can perform tumor diagnosis in the human body in real time, has more advantages compared with X-ray, CT examination and other technologies, is high in spatial resolution, and has more advantages than a pathological biopsy technology in rapid, accurate and noninvasive characteristics. The intervention type in-vivo real-time tumor imaging method is safer, more accurate, quicker and more convenient and has the good application prospect in tumor diagnosis.

The invention discloses a novel X-ray CT scanner. The scanner comprises a base, a control switch is mounted on the right side of the base, the front and rear ends of the base are both provided with a telescopic rod, the end of the telescopic rod is fixed with a top seat, an electric telescopic rod is arranged between the top seat and the base, and the upper and lower ends of the electric telescopic rods are fixedly connected with the top seat and the base respectively. The novel X-ray CT scanner has the advantages of being simple in structure, exposing only the part requiring examination to the irradiation scope of the X-ray, avoiding the radiation hazards of the X-ray to the rest of the body parts when a CT examination is conducted, and further reducing the radiation harm of the X-ray to the human body, a shield plate slides horizontally relative to a bed board, the shield plate slides relative to the scanner in the vertical direction, so that the shield plate and the lifting of the bed board are kept consistent, the shielding effect is not affected, the arrangement of elastic bands and a shielding cloth facilitates the adjustment according to the fatness and thinness of a patient, applicability is improved, the shielding effect is enhanced, and the novel X-ray CT scanner is more convenient to use.

The invention discloses a pelvic organ automatic segmentation method for CT examination. The method comprises the steps of based on the model establishment process of a training database, establishing a deformable model for the segmentation process and hierarchical clustering models, wherein the hierarchical clustering models are formed in such a manner that organs in the training database are segmented into five regions for the amplitude-stated prostate CT examination and each region is in the form of an outline-based hierarchical clustering model established according to the segmentation of the amplitude-stated prostate CT examination; during the local segmentation process, adopting the deformable model as a deformation guidance, finding out an optimal segmentation outline for each region according to the hierarchical clustering model of the region, and recombining the optimal segmentation outlines of the five regions as an initial outline of the global segmentation process; during the global segmentation process, segmenting and regulating the initial outline of the global segmentation process in the same way with that of the local segmentation process to obtain final segmented images.

The invention discloses an adjustable head support for CT examination for imaging department, and relates to the technical field of medical instruments. The adjustable head support comprises a base seat, wherein a groove is formed in the upper surface of the base seat; a fixing ring is fixedly connected to the upper surface of the base seat; sliding sleeves are connected to the left and right sides of the surface of the fixing ring in a clamping manner; and sliding rods are sleeved to the sliding sleeves. The imaging department uses CT to check the adjustable head support, through the mutual cooperation of a clamping device, a rotary block, a threaded rod and a support plate, when a patient's head is placed on the support plate, people rotate the rotary block, the rotary block drives the threaded rod to rotate, and the threaded rod rotates under the action of a threaded hole to move upward, so that the angle at which the patient's head is lifted can be adjusted; and at the same time, avalve is opened, and a negative pressure ball is pressed, and the negative pressure ball inflates an airbag through a connecting pipe and an air inlet pipe, so that a clamping plate is more comfortable in clamping the patient's head, and the patient's head can be fixed more comfortably during CT detection.

The invention relates to an intracranial hemorrhage detection model with optimized and enhanced window adjustment and a construction method of the intracranial hemorrhage detection model. The invention provides an intracranial hemorrhage detection model on one hand. The intracranial hemorrhage detection model comprises a window adjustment optimization enhancement module and a RetinaNet network. The window adjustment optimization enhancement module is constructed by a 1 * 1 convolution layer and a window activation function layer. The network comprises a basic feature extraction network, an FPNfeature pyramid and a classification and regression sub-network. On the other hand, the invention also provides a construction method of the intracranial hemorrhage detection model with optimized andenhanced window adjustment. The construction method comprises the following steps: step 1, preparing a craniocerebral CT examination data set and carrying out data preprocessing; step 2, constructingan intracranial hemorrhage detection model; step 3, training an intracranial hemorrhage detection model; and step 4, verifying the intracranial hemorrhage detection model. According to the invention,the contrast between a bleeding area and a normal tissue is enhanced through the window adjustment optimization module, and the accuracy of model detection is greatly improved by combining the feature extraction of ResNet and the setting of a network.

The invention discloses the technical field of medical instruments, in particular to a CT examination bed with a radiation reducing function. The CT examination bed comprises a base, wherein the top of the base is fixedly connected with a bottom bed, the top of the bottom bed is provided with a sliding rail, a group of sliding plates are slidably connected in the sliding rail, the tops of the sliding plates are fixedly connected with a sliding bed, the outer side wall of the sliding plates is fixedly connected with a rack, the middle of the bed is rotatably connected with a group of rotating shafts, and the two ends of each of the rotating shafts are fixedly connected with a sliding gear and a transmission gear respectively. A plurality of upper guide plates and lower guide plates are fixedly connected to the side wall of the bottom bed, radiation-proof plates are slidably arranged between the upper guide plates and the lower guide plates, limiting plates are fixedly connected to the outer walls of the radiation-proof plates, gear shifting grooves are formed in the inner side walls of the radiation-proof plates, a shifting shaft is rotatably connected to the middle of a shifting frame, and shifting rollers are fixedly connected to the side wall of the shifting shaft. The invention can effectively reduce radiation, provides protection for the parts which do not need CT scanning,is flexible and convenient to use, and provides convenience for medical staff to work.

The invention discloses an underground type radiation-proof children CT device. The underground type radiation-proof children CT device comprises a box, the left end of the front surface of the box is provided with a controller which is electrically connected with an external power supply, and the right end of the box is provided with a door sheet; the lower end of the left surface of the door sheet is provided with two wheels which are distributed from front to back; the left end of the rear surface of the box is provided with two vertically-distributed electric retractable rods which are electrically connected with the controller, and the retractable end of each electric retractable rod is fixedly connected with the right surface of the door sheet through a fixing board; the right end of the inside of the box is provided with a bed body and a CT unit which are both electrically connected with the controller. The underground type radiation-proof children CT device is simple in structure, cotton cushions and guardrails can achieve the effects of avoiding bumping and falling, belts can fix a child to save labor and facilitate CT examination, and meanwhile, a movable protective cover can avoid radiation healthy tissues and further to reduce damage to patients and improve use safety.

The invention relates to a support mat (1) for a trauma patient (16) with a seamlessly welded cover (22), the sides of which are provided with skirt-like overhangs (2 to 5). In this manner the support mat (1) and modality protection are combined in a single component. In the folded over state, the mat protects the patient visually on the one hand and against heat loss on the other hand. Furthermore the extremities are thus secured during transportation and also during CT examinations. In the folded open state, the mat protects the modalities from fluids.

The invention discloses an auxiliary training system used before MR and CT examination. The auxiliary training system comprises a respiratory training instrument. The respiratory training instrument comprises a simulated respiratory channel, a flow sensor and a processor. The flow sensor is used for collecting data of breathing airflow flowing through the simulated breathing channel; the processoris connected with the flow sensor through the ADC conversion module; an upper computer interface comprises a training mode, a suffocation mode and an adaptation mode; when the processor receives a training mode instruction, the processor receives respiratory airflow data sampled by the flow sensor and the ADC conversion module, and analyzes and calculates the frequency and amplitude of respiratory airflow according to the respiratory airflow data; whether respiration is qualified or not is judged; by means of the training mode, a subject can practice breathing, control over breathing of the subject is enhanced in combination with the breathing intensity and the breathing frequency, breathing becomes stable and regular, and therefore the accuracy and precision of an examination result arefully guaranteed.

The invention discloses a self-adaptive air cushion type head fixing device, which comprises an air leaking device, an air inflation device, a single chip, an air charging and discharging switch, a pressure sensor, a relay and a U-shaped pillow for fixing the head part of a patient; an air chamber of chargeable air is placed in the U-shaped pillow, and the single chip is connected with the air inflation device through the relay; the air inflation device is connected with the air chamber, and the air charging and discharging switch is connected with the single chip; the air charging and discharging switch opens the single chip to control the electrification of the relay, and the air inflation device charges the air chamber, thus the U-shaped pillow tightens the head part of a patient; the pressure sensor is connected with the air chamber for monitoring internal pressure of the air chamber in real time and transmitting the pressure signal to the single chip to compare with the preset pressure value; when the pressure in the air chamber is equal to the preset pressure value, air inflation device stops air inflation; air leaking device is connected with the air chamber. Through charging and pressurizing the air chamber, the U-shaped head pillow fixes the head part of the patient, and guarantees that the head part of the patient cannot sway or move during the CT examination process; besides, the CT image is clear and the diagnosis is exact.