Abstract: A method and system are disclosed for a compact, inexpensive ultrasound system using an off-the--shelf personal digital assistant (PDA) device interfacing to a hand-held probe assembly through a standard digital interface. The hand-held probe assembly comprises a detachable transducer head attached to a beamforming module that performs digital beamforming. The PDA runs Windows applications and displays menus and images to a user. The PDA also runs ultrasound data processing software to support a plurality of imaging modes. An internal battery is provided in the PDA to power the system. The transducer head is detachable from the beamforming module.

Abstract: A method for automatically determining the best effective reconstruction gap, the method including scanning a phantom to collect image data of the phantom, using a plurality of different gap values to reconstruct image of the phantom respectively, based on the image data, thus obtaining a plurality of images respectively associated with different gap values, selecting the best image from the plurality of images, and automatically determining the gap value associated with the best image, and save it as the best effective reconstruction gap.

Abstract: A CT imaging system and a method for determining a CT collimator slit profile. The method includes determining a profile of two opposite edges of the collimator slit in a longitudinal direction thereof based on the following: a vertical distance between a focus of a radiation source to the collimator slit, a vertical distance between the focus and the radiation detector, an inclination angle between adjacent detector elements, a length of each detector element, a desired width of projection on the radiation detector by the radiation rays passing through the slit whose longitudinal edge profile is to be determined, and an offset angle of a connecting line from a point on a longitudinal center line of the slit to the focus relative to a plane passing said focus and perpendicular to the slit.

Abstract: A cradle drive mechanism, a table and a patient imaging and carrying apparatus are provided. The cradle drive mechanism includes: a first portion, which is arranged on a main base and has a belt drive structure, wherein the belt drive structure is used to connect a cradle and drive the cradle to make a reciprocating motion; a second portion, which is arranged on a secondary base and has a secondary supporting and rotating member, wherein the second portion and the first portion form a gap therebetween, and the secondary supporting and rotating member is used to support the cradle; and two guiding and rotating members, which are arranged on the second portion and/or the first portion for guiding the cradle to move linearly. The present application can simplify the structure by adoption of the belt drive structure. Further, the gap between the second portion and the first portion does not attenuate the X-ray additionally, so the dose of the X-ray emitted can be decreased.

Abstract: An imaging system configured to automatically detect a patient's body profile and to position the patient. The imaging system includes a scan support member configured to support a scan object, a processing device; and an identification device electrically connected to the processing device. The scan support member includes a machine identifiable code representing a distance from a position of the machine identifiable code to one end of the scan support member. The identification device is configured to identify the machine identifiable code, to decode the distance represented by the machine identifiable code and to send the distance represented by the machine identifiable code to the processing device. The processing device determines a distance from an interested location of the scan object to a scanning plane of the imaging system according to the distance represented by the machine identifiable code.

Abstract: A method and apparatus for data conversion in an unequal ? angle CT system. The method for imaging in a CT system having a flat module detector array includes obtaining fan beam projection data of an object from a CT scan, obtaining a geometric structure parameter of the flat module detector array; rebinning data from the fan beam projectiondata to parallel beam projection data based on the geometric structure parameter to convert the fan beam projection data into the parallel beam projection data, and generating a CT image from the parallel beam projection data.

Abstract: A method for geometric calibration of a CT scanner, including, for each row of at least one row of detector cells, establishing a complete geometric description of the CT scanner, including at least one unknown geometric parameter, establishing a description of a forward projection function using the complete geometric description, acquiring actual projection coordinates of a calibration phantom placed in a scanning field of view (SFOV) on a current row of detector cells and corresponding to a plurality of angles, acquiring calculated projection coordinates of the calibration phantom on the current row of detector cells and corresponding to the plurality of angles using the description of the forward projection function, and acquiring a calibrated value for the at least one unknown geometric parameter by evaluating the at least one unknown geometric parameter based on the acquired actual projection coordinates and calculated projection coordinates via a nonlinear least square fitting algorithm.

Abstract: An imaging system for achieving automatic detection of a patient's body profile and intelligent positioning of the patient. The imaging system includes at least one transmitter disposed on one side of a bore of the imaging system, and a receiver disposed on the other side of the bore of the imaging system. The at least one transmitter is configured to transmit a beam incapable of effectively penetrating a scan object. The receiver is configured to receive the beam transmitted by the at least one transmitter and to send a received signal to a processing device. The processing device is electrically connected to the receiver, and configured to determine whether the beam transmitted by the at least transmitter is blocked by the scan object according to the received signal so as to determine a position of the scan object.

Abstract: A computerized tomography (CT) method and CT system. The method comprises projecting a beam from a radiation source within a display field of view (DFOV) toward a subject to be imaged; receiving, at a detector, the projected beam to collect projection data; determining whether in the projection a truncation occurs in which the subject exceeds the DFOV; and recording a truncated location of the projection if truncation occurs.

Abstract: A method of transmitting raw data by a data acquisition system in a CT scanning system, wherein the CT scanning system comprises a rotational part of a gantry with at least one raw data backup memory, and wherein the data acquisition system is configured to adopt the at least one backup memory for storing a backup of the raw data. The method comprising: generating the raw data as scanned; storing generated raw data in the at least one backup memory; transmitting the raw data to an operation console in the CT scanning system; and repeating generating, storing, and transmitting of the raw data in the case of an unfinished scan, until the unfinished scan is finished.

Abstract: An uninterruptible power supply configured to automatically detect a load level and automatically power off and disable power supply or automatically power on and enable the power supply based on a detected load level, so that energy of a backup source of the uninterruptible power supply is not wasted and a life-cycle of the uninterruptible power supply is extended.

Abstract: A method for searching and displaying scattered logs, comprising: finding out one or more corresponding log data based on a search key word; determining a desired timestamp from the log data, and regarding the log data containing the timestamp as target data; searching a semantic file for related semantic data based on the search key word, and finding out related log data based on the related semantic data; time filtering the related log data to obtain filtered log data; establishing a coordinate system by mapping the target data and the filtered log data onto mapping points of the coordinate system; semantically linking the filtered log data, and dying the filtered log data and the target data; and counting the number of lines related to the target data and the filtered log data, and generating links thereto. The present invention further discloses a device for searching and displaying scattered logs.

Abstract: A CT imaging method and a CT system based on a multi-mode scout scan. The CT imaging method based on a multi-mode scout scan comprises: performing an instant switching dual energy scout radiation scan on a region of interest of a subject by way of instant switching between high voltage and low voltage to collect dual energy protection data of the region of interest; and reconstructing a material decomposition image and a mono-energetic image based on the collected dual energy projection data.

Abstract: An automatic scanning and positioning apparatus for a scout image, comprising: a receiving means, for receiving a scout image of a subject obtained through scout scanning; a checking and determining means, for automatically checking at least one position in the scout image according to a plurality of information contained in the scout image, and automatically determining a scanning scope based on the at least one position; and an executing means, for executing axial scanning to the subject based on the determined scanning scope.

Abstract: A method for eliminating background noises in shear waves and the respective ultrasonic imaging system, the method includes: transmitting a push pulse along a push pulse vector; transmitting a first group of focus track pulses at a first group of a plurality of locations far away from the push pulse vector; receiving a first group of focus echo signals in response to the first group of focus track pulses; and processing the first group of focus echo signals to determine a first group of tissue displacement information varying with time.

Abstract: An ultrasound probe switchover device and a corresponding ultrasound imaging system, the device comprising connecting lines configured to directly connect signal pins of ultrasound probes and signal channels of a transmit-receive beamformer, wherein each connecting line first connects together a set of signal pins with the same number in the ultrasound probes, and then connects the set to a corresponding signal channel of the transmit-receive beamformer.

Abstract: A method of automatically determining parameters for a contrast scan, the method comprising obtaining scan-object information, selecting a scan protocol corresponding to a part of at least one part of a scan-object to be scanned from a plurality of scan protocols, each of the plurality of scan protocols corresponds to a part of the at least one part of the scan-object to be scanned and comprises built-in scan parameters, and automatically determining a scan delay and injection parameters with respect to the scan-object and the part of the scan-object to be scanned.

Abstract: A phase shifter is provided. The phase shifter includes a first phase shifter that is continuously adjustable within a range of 0 degrees to 90 degrees, two 4-way switches each configured to selectively switch on one of a capacitance, an inductance, an open circuit, and a short circuit under control of a control voltage, and a bridge. A first input end and a first output end of said bridge are respectively connected to a first 4-way switch of the two 4-way switches. A second input end of said bridge is connected to an output end of said first phase shifter or a second output end of said bridge is connected to an input end of said first phase shifter.

Abstract: A truckle for a mobile medical device is provided. The truckle includes at least one electromagnetism torque balancing motor mounted on the truckle and configured to balance out friction generated by the truckle.

Abstract: A locking mechanism for probe connector that is connected to a shaft of the probe connector, includes a door and a drive assembly for releasing or locking the probe connector by opening and closing of the door.