Abstract:
An ultrasonic observation apparatus includes: a storage unit that stores a reference spectrum that is obtained based on a frequency of an ultrasonic wave received from a reference reflector; a frequency analyzer that calculates a frequency spectrum by analyzing a frequency of the received ultrasonic wave; a frequency band setting unit that sets a frequency band that is used to approximate the frequency spectrum calculated by the frequency analyzer; a corrected frequency spectrum calculator that calculates a corrected frequency spectrum by correcting the frequency spectrum calculated by the frequency analyzer based on the reference spectrum that is stored in the storage unit; and a feature data extracting unit that extracts feature data of the corrected frequency spectrum by approximating the corrected frequency spectrum calculated by the corrected frequency spectrum calculator in the frequency band set by the frequency band setting unit.
Abstract:
An ultrasonic observation apparatus includes a storage unit for storing a plurality of data sets including position information indicating a position of an observation point, the feature extracted by a computation unit for the observation point, image data generated by an image processing unit for the observation point, and parameters used for extracting the feature and generating the image data, a data selection unit for searching the data sets based on relative position information indicating a relative position between a patient and an ultrasound probe and selecting a data set meeting a predetermined condition, and an execution control unit for, when a data set meeting the predetermined condition is selected, causing the computation unit to re-extract the feature by use of the parameters included in the data set.
Abstract:
An ultrasonic observation apparatus includes: an ultrasound probe configured to convert an electrical transmission drive wave into a transmission echo of an ultrasonic wave, to transmit the transmission echo to a specimen, to receive a reception echo reflected from the specimen, and to convert the reception echo into an electrical reception signal; a storage unit configured to store a parameter that indicates characteristics depending on types of the ultrasound probe and is required for generation of the transmission drive wave and correction of the reception signal; a transmission drive wave generating unit configured to generate the transmission drive wave depending on the types of the ultrasound probe with reference to the parameter stored in the storage unit such that a frequency spectrum of the transmission echo in a predetermined frequency band is constant regardless of the types of the ultrasound probe; a reception signal correcting unit configured to correct the reception signal depending on the types of the ultrasound probe with reference to the parameter stored in the storage unit; and an image processing unit configured to generate image data using the reception signal corrected by the reception signal correcting unit.
Abstract:
An ultrasound diagnostic apparatus includes: an ultrasound transducer (12) including two-dimensionally arranged vibration elements; a beam former (23) that drives the ultrasound transducer (12) to perform three-dimensional scanning and that acquires ultrasound data of a three-dimensional space; a delay calculating circuit (24) sets scan conditions of the beam former (23); a graphic circuit (27) that generates an ultrasound slice image of a predetermined cut surface from the ultrasound data of the three-dimensional space; and a CPU (29) that causes the delay calculating circuit (24) to change the scan conditions according to the cut surface set at a desired position.
Abstract:
An ultrasonic observation apparatus includes: a region of interest setting unit that is able to set information on a position and a size of a region of interest in a specimen; a focus point calculation unit that calculates a plurality of focus points in the region of interest based on size information of the region of interest set by the region of interest setting unit; a transmitting and receiving unit that performs a transmission-and-reception of an ultrasonic wave which is focused on the focus points calculated by the focus point calculation unit; a frequency analysis unit that calculates a plurality of frequency spectra by analyzing the ultrasonic wave received by the transmitting and receiving unit with reference to the focus points; a feature data extracting unit that extracts feature data of the frequency spectra calculated by the frequency analysis unit by approximating the frequency spectra; and an image processing unit that generates ultrasonic image data having a display mode corresponding to the feature data extracted by the feature data extracting unit.