Abstract: An ultrasound imaging apparatus includes a processor including hardware. The processor is configured to: generating first frequency spectrum data and second frequency spectrum data with regard to a first ultrasound signal and a second ultrasound signal, respectively; generating first ultrasound image data based on the first ultrasound signal; generating second ultrasound image data based on the second ultrasound signal; estimating a displacement amount including at least one of a positional change amount and a rotation angle of a subject depicted in the first ultrasound image data with respect to the subject depicted in the second ultrasound image data; correcting the first frequency spectrum data in accordance with the estimated displacement amount; calculating differential feature data by using the corrected first frequency spectrum data and the second frequency spectrum data; and generating analysis image data to which color information corresponding to the differential feature data is applied.

Abstract: An ultrasound observation system includes a processor includes hardware. The processor is configured to: receive an echo signal based on ultrasound scanning of a scan region of a subject; set first regions in the scan region, each one of the first regions including second regions; calculate frequency spectra in the respective second regions based on an analysis of the echo signal; calculate a plurality of pieces of feature data based on the frequency spectra; calculate a statistical value of the plurality of pieces of feature data in the first regions; set filters for the respective first regions based on the statistical value; perform a filtering process with the filters on the echo signal to calculate a second echo signal; and generate ultrasound image data based on an amplitude of the second echo signal, frequency curves of the filters differing from each other depending on the statistical value.

Abstract: An ultrasound diagnostic apparatus includes a drive circuit configured to transmit a drive signal to an ultrasound transducer, a receiving circuit configured to receive an echo signal from the ultrasound transducer, and a processor. The processor obtains, based on the echo signal or a user input, target information containing at least one of a distance from the ultrasound transducer to a target region containing liquid or a size of the target region, and sets, based on the target information, a drive condition under which an acoustic streaming generating ultrasound transmitted by the ultrasound transducer generates acoustic streaming in the liquid in the target region.

Abstract: An ultrasound diagnostic apparatus generates an ultrasound image based on an ultrasound signal acquired by an ultrasound probe having an ultrasound transducer. The ultrasound transducer transmits an ultrasound wave to an observation target and receives the ultrasound wave reflected from the observation target.

Abstract: An ultrasound diagnostic apparatus includes: a beam former that drives an ultrasound transducer including two-dimensionally arranged vibration elements and that acquires ultrasound data of a three-dimensional space; a delay calculating circuit sets scan conditions including a drive delay amount of the beam former; a graphic circuit that generates an ultrasound slice image of a predetermined cut surface from the ultrasound data of the three-dimensional space; and a CPU that determines a focal length or a focal depth of the ultrasound according to a distance from the ultrasound transducer to the desirably set cut surface to set an amount of delay to cause the delay calculating circuit to change the scan conditions.

Abstract: An ultrasound imaging apparatus includes a processor including hardware. The processor is configured to: generating first frequency spectrum data and second frequency spectrum data with regard to a first ultrasound signal and a second ultrasound signal, respectively; generating first ultrasound image data based on the first ultrasound signal; generating second ultrasound image data based on the second ultrasound signal; estimating a displacement amount including at least one of a positional change amount and a rotation angle of a subject depicted in the first ultrasound image data with respect to the subject depicted in the second ultrasound image data; correcting the first frequency spectrum data in accordance with the estimated displacement amount; calculating differential feature data by using the corrected first frequency spectrum data and the second frequency spectrum data; and generating analysis image data to which color information corresponding to the differential feature data is applied.

Abstract: An ultrasound observation apparatus is configured to be able to exchange plural models of ultrasound probes and configured to receive an ultrasound signal from an ultrasound probe connected to the ultrasound observation apparatus. The ultrasound observation apparatus includes: a corrector configured to correct ultrasound data based on the ultrasound signal using first reference data and second reference data, the first reference data being determined by different models of the ultrasound probes to be connected to the ultrasound observation apparatus, the second reference data being determined by individual probes of the same models of the ultrasound probes to be connected to the ultrasound observation apparatus. The corrector is configured to correct the ultrasound signal by performing a calculation on the ultrasound signal using each of the first reference data and the second reference data for each frequency or each distance.

Abstract: An ultrasound diagnosis apparatus is configured to generate an ultrasound image based on an ultrasound signal obtained by an ultrasound probe having an ultrasound transducer that transmits ultrasound to a subject and receives the ultrasound reflected from the subject. The apparatus includes: an analysis unit that analyzes a frequency of the ultrasound signal to calculate a frequency spectrum of the ultrasound signal for each reception depth; a calculation unit that calculates, in a predetermined order, a distance change rate and a frequency change rate in the frequency spectrum or in a function defined by using the frequency spectrum, to calculate a second-order change rate of the frequency spectrum or of the function; and an estimation unit that estimates an attenuation rate of the ultrasound signal, per unit distance and per unit frequency, in a predetermined region within a scanning region of the ultrasound transducer using the second-order change rate.

Abstract: An ultrasound diagnosis apparatus is configured to generate an ultrasound image based on an ultrasound signal obtained by an ultrasound probe having an ultrasound transducer that transmits ultrasound to a subject and receives the ultrasound reflected from the subject. The apparatus includes: an analysis unit that analyzes a frequency of the ultrasound signal to calculate a frequency spectrum of the ultrasound signal for each reception depth; a calculation unit that calculates, in a predetermined order, a distance change rate and a frequency change rate in the frequency spectrum or in a function defined by using the frequency spectrum, to calculate a second-order change rate of the frequency spectrum or of the function; and an estimation unit that estimates an attenuation rate of the ultrasound signal, per unit distance and per unit frequency, in a predetermined region within a scanning region of the ultrasound transducer using the second-order change rate.

Abstract: An ultrasound diagnosis device includes a controller. The controller is configured to: calculate a feature related to an ultrasound signal, based on the ultrasound signal received from an observation target; estimate a physical quantity of scattering bodies included in the observation target, by using: a relation derived based on a known physical quantity of an object and a feature obtained from the object, the object including scattering bodies having the known physical quantity; and the calculated feature of the observation target; and generate information to be displayed on a display, the information including a result of the estimation.

Abstract: An ultrasound diagnosis apparatus is configured to generate an ultrasound image based on an ultrasound signal obtained by an ultrasound probe having an ultrasound transducer that transmits ultrasound to a subject and receives the ultrasound reflected from the subject. The apparatus includes: an analysis unit that analyzes a frequency of the ultrasound signal to calculate a frequency spectrum of the ultrasound signal for each reception depth; a calculation unit that calculates, in a predetermined order, a distance change rate and a frequency change rate in the frequency spectrum or in a function defined by using the frequency spectrum, to calculate a second-order change rate of the frequency spectrum or of the function; and an estimation unit that estimates an attenuation rate of the ultrasound signal, per unit distance and per unit frequency, in a predetermined region within a scanning region of the ultrasound transducer using the second-order change rate.

Abstract: An ultrasound diagnostic apparatus generates an ultrasound image based on an ultrasound signal acquired by an ultrasound probe having an ultrasound transducer. The ultrasound transducer transmits an ultrasound wave to an observation target and receives the ultrasound wave reflected from the observation target.

Abstract: A medical diagnostic apparatus includes: a feature calculating unit configured to calculate a plurality of kinds of features that is based on luminance information or frequency spectrum information obtained from a received signal from a specimen, and that relates to attributes of a tissue of the specimen; a classification unit configured to: classify the attributes of the tissue of the specimen by using a feature determined among the plurality of kinds of features calculated by the feature calculating unit according to a classification item selected in advance from a plurality of classification items assigned for each classification purpose; and assign visual information according to a classification result to pixels of an image based on the received signal; and a feature image data generating unit configured to generate feature image data on which the visual information assigned to the pixels of the image based on the received signal is superimposed.

Abstract: An ultrasound diagnosis apparatus is configured to generate an ultrasound image based on an ultrasound signal obtained by an ultrasound probe having an ultrasound transducer that transmits ultrasound to a subject and receives the ultrasound reflected from the subject. The apparatus includes: an analysis unit that analyzes a frequency of the ultrasound signal to calculate a frequency spectrum of the ultrasound signal for each reception depth; a calculation unit that calculates, in a predetermined order, a distance change rate and a frequency change rate in the frequency spectrum or in a function defined by using the frequency spectrum, to calculate a second-order change rate of the frequency spectrum or of the function; and an estimation unit that estimates an attenuation rate of the ultrasound signal, per unit distance and per unit frequency, in a predetermined region within a scanning region of the ultrasound transducer using the second-order change rate.

Abstract: A medical diagnostic apparatus includes: a feature calculating unit configured to calculate a plurality of kinds of features that is based on luminance information or frequency spectrum information obtained from a received signal from a specimen, and that relates to attributes of a tissue of the specimen; a classification unit configured to: classify the attributes of the tissue of the specimen by using a feature determined among the plurality of kinds of features calculated by the feature calculating unit according to a classification item selected in advance from a plurality of classification items assigned for each classification purpose; and assign visual information according to a classification result to pixels of an image based on the received signal; and a feature image data generating unit configured to generate feature image data on which the visual information assigned to the pixels of the image based on the received signal is superimposed.

Abstract: An ultrasound diagnostic apparatus includes: a beam former that drives an ultrasound transducer including two-dimensionally arranged vibration elements and that acquires ultrasound data of a three-dimensional space; a delay calculating circuit sets scan conditions including a drive delay amount of the beam former; a graphic circuit that generates an ultrasound slice image of a predetermined cut surface from the ultrasound data of the three-dimensional space; and a CPU that determines a focal length or a focal depth of the ultrasound according to a distance from the ultrasound transducer to the desirably set cut surface to set an amount of delay to cause the delay calculating circuit to change the scan conditions.

Abstract: A treatment instrument insertion auxiliary is used to subserve passage of an elongated treatment instrument into a treatment instrument channel by being connected to an endoscope provided with a rigid insertion portion which includes the treatment instrument channel adapted to allow passage of the treatment instrument and a treatment instrument channel opening portion formed at a proximal end of the treatment instrument channel and used to insert the treatment instrument, where the treatment instrument insertion auxiliary includes a receiving portion adapted to suppress vibration of a distal end side of the treatment instrument by being placed in contact with the distal end side of the treatment instrument; and a first guide unit adapted to guide a distal end of the treatment instrument placed in contact with the receiving portion in a central axis direction of the treatment instrument channel opening portion.

Abstract: A medical guiding system of the invention includes: a detection portion for detecting a position and an orientation of a medical instrument and positions of feature points of a subject; a storage portion for storing reference image data having positional information on an organ of a human body; and a guide image creation portion for creating a guide image indicating the position of the medical instrument with respect to the subject from the reference image data. The guide image creation portion calculates the position of the medical instrument with respect to the subject, based on the position and the orientation of the medical instrument and the positions of feature points of the subject which are detected by the detection portion, and creates a guide image by correcting the calculated position of the medical instrument, using the positions of the feature points.

Abstract: A medical system includes: an image signal acquiring portion for acquiring a signal to generate an image corresponding to a picture of a subject; an image generating portion for generating a real-time image of an inside of the test subject based on the acquired signal; a detecting portion for outputting a position and an orientation of an image position and orientation detecting element as a detection value; a reference image data storage portion for storing reference image data made up of anatomical images of the test subject; a guide image generating portion for generating a guide image to provide guide information about at least one of an anatomical position and orientation within the test subject of the real-time image, based on the detection value and the reference image data; and a detection state notification information generating portion for generating information to notify a detection state of the detection value.

Abstract: An endoscope system is provided with an insertion portion having a rigid portion disposed at a distal end portion of the insertion portion, an ultrasound probe that has a first sensor for detecting a position and a direction at a probe distal end portion, is inserted from an insertion port from a proximal end portion side of a channel and projects from a projection port of the rigid portion, a channel that passes through the rigid portion and can linearly support the medical instrument distal end portion, a position calculation section that calculates a position and a direction of the first sensor, and a direction calculation section that calculates a direction of the probe distal end portion based on a positional information variation of the first sensor before and after linear movement in the channel in the rigid portion of the probe distal end portion.