Abstract: There is provided an electrostatic image developing toner less likely to cause image degradation even when used for a long period, by controlling CCA particles present on surfaces of toner particles and thereby keeping an amount of tribocharge generated between the toner and a magnetic carrier or the like constant. A charge control agent composition for external addition for controlling charge amount of toner particles includes: at least two types of carrier particles different in average particle size of primary particles; and a charge control agent (CCA), and an electrostatic image developing toner is constituted of a mixture of toner particles and the aforesaid charge control agent composition for external addition.

Abstract: In order to three-dimensionally quantify the elastic information indicating the hardness or softness of tissue of an object with a simple operation, two three-dimensional regions of interest are set on a displayed elastic rendering image. A three-dimensional distortion ratio measuring unit 52 calculates a ratio between elastic information in the set first three-dimensional region of interest and elastic information in the set second three-dimensional region of interest and displays the ratio on an image display device 13.

Abstract: A method for generating a region of interest (ROI) wherein in setting ROIs in biological tissues to be compared, burden on a subject can be reduced and the reproducibility of elasticity measurement improved, including: setting candidate points in an arbitrary designated region in a notable tissue in a contrast image of an object designated by an input device; determining partial differential values of pixel values in a two-dimensional direction in the contrast image and thus detecting a tissue boundary; acquiring a shortest distance between the detected tissue boundary and each point, and setting a circle or polygonal region inscribed in the circle having the maximum shortest distance as a radius around the candidate point having the maximum shortest distance as a region of interest; and imaging the region of interest and superimposing it on the contrast image and displaying it on an image display unit.

Abstract: An ultrasonic diagnostic apparatus according to the present invention has an ultrasonic probe for transmitting/receiving an ultrasonic wave to/from an object while the object is pressed, a phasing and adding unit for generating RF signal frame data of a cross-sectional site of the object on the basis of a reflection echo signal measured by the ultrasonic probe, an ultrasonic image generating unit for generating an ultrasonic image of the cross-sectional site of the object on the basis of the RF signal frame data, a measurement target setting unit for setting a measurement target to the RF signal frame data or the ultrasonic image, a measurement target position tracing unit for tracing a positional variation of the set measurement target, a displacement image generating unit for generating a graph representing transition of a press state applied to the measurement target on the basis of the positional variation of the measurement target, and a display unit for displaying the generated graph.

Abstract: There is provided an electrostatic image developing toner less likely to cause image degradation even when used for a long period, by controlling CCA particles present on surfaces of toner particles and thereby keeping an amount of tribocharge generated between the toner and a magnetic carrier or the like constant. A charge control agent composition for external addition for controlling charge amount of toner particles includes: at least two types of carrier particles different in average particle size of primary particles; and a charge control agent (CCA), and an electrostatic image developing toner is constituted of a mixture of toner particles and the aforesaid charge control agent composition for external addition.

Abstract: In order to provide an ultrasound diagnostic apparatus and method for detecting deterioration of a transducer of an ultrasound probe in which or by which deterioration of a transducer of an ultrasound probe can be correctly detected, an ultrasound diagnostic apparatus including an ultrasound probe for transmitting and receiving ultrasonic waves, and a tomographic image constructing part for constructing a tomographic image from reflected echo signals received with the ultrasound probe is provided with a brightness analyzing part for analyzing brightness of a plurality of regions of interest in the tomographic image, and a judging part for judging whether a transducer of the ultrasound probe has deteriorated or not on the basis of analyzed brightness.

Abstract: Even when a region of interest (ROI) is changed on a frozen image, an elasticity image of ROI after the change can be displayed without executing re-measurement. An ultrasonic diagnostic apparatus 1 has a control unit 110 having a first ROI setting unit 38 and a second ROI setting unit 39. When ROI is set by the first ROI setting unit 38 of the control unit 110, an elasticity information calculating unit 32 sets an area larger than ROI as a calculation area, calculates distortion, elasticity modulus, etc. of a tissue corresponding to each measurement point on a tomographic image of the calculation area, generates elasticity information based on the distortion, the elasticity modulus, etc., and outputs the elasticity information to an elasticity information storing unit 33. The control unit 110 changes the position/size of ROI by the second ROI setting unit 39 under a state that the frozen image is displayed.

Abstract: An ultrasonic diagnostic apparatus comprises an operation unit that arbitrarily specifies a cross-section; a specified cross-section tomographic image constructing unit that cuts and constructs a tomographic image of the specified cross-section from tomographic volume data that is stored in the volume data storing unit; a specified cross-section elastic image constructing unit that cuts and constructs an elastic image of the specified cross-section from elastic volume data that is stored in the volume data storing unit; and a display unit that displays in parallel the tomographic image and the elastic image that are constructed by the specified cross-section tomographic image constructing unit and the specified cross-section elastic image constructing unit.

Abstract: In order to three-dimensionally quantify the elastic information indicating the hardness or softness of tissue of an object with a simple operation, two three-dimensional regions of interest are set on a displayed elastic rendering image. A three-dimensional distortion ratio measuring unit 52 calculates a ratio between elastic information in the set first three-dimensional region of interest and elastic information in the set second three-dimensional region of interest and displays the ratio on an image display device 13.

Abstract: In order to provide an ultrasonic diagnostic apparatus and an ultrasonic image display method for recognizing a region (boundary portion) having elasticity information of interest, an ultrasonic diagnostic apparatus having an elasticity information calculating unit 10 for calculating elasticity information containing distortion or an elasticity modulus on the basis of RF signal frame data based on a reflection echo signal received through an ultrasonic probe 1, an elasticity mage constructing unit 12 for constructing an elasticity image on the basis of the elasticity information obtained by the elasticity information calculating unit 10, a tomographic image constructing unit 6 for constructing a tomographic image on the basis of the RF signal frame data, and an image display unit 15 for displaying one or both of the tomographic image and the elasticity image is provided with a histogram calculating unit 111 for creating histogram data based on the elasticity information and the frequency, and a boundary detec

Abstract: Even when a region of interest (ROI) is changed on a frozen image, an elasticity image of ROI after the change can be displayed without executing re-measurement. An ultrasonic diagnostic apparatus 1 has a control unit 110 having a first ROI setting unit 38 and a second ROI setting unit 39. When ROI is set by the first ROI setting unit 38 of the control unit 110, an elasticity information calculating unit 32 sets an area larger than ROI as a calculation area, calculates distortion, elasticity modulus, etc. of a tissue corresponding to each measurement point on a tomographic image of the calculation area, generates elasticity information based on the distortion, the elasticity modulus, etc., and outputs the elasticity information to an elasticity information storing unit 33. The control unit 110 changes the position/size of ROI by the second ROI setting unit 39 under a state that the frozen image is displayed.

Abstract: An ultrasonic diagnostic apparatus according to the present invention has an ultrasonic probe for transmitting/receiving an ultrasonic wave to/from an object while the object is pressed, a phasing and adding unit for generating RF signal frame data of a cross-sectional site of the object on the basis of a reflection echo signal measured by the ultrasonic probe, an ultrasonic image generating unit for generating an ultrasonic image of the cross-sectional site of the object on the basis of the RF signal frame data, a measurement target setting unit for setting a measurement target to the RF signal frame data or the ultrasonic image, a measurement target position tracing unit for tracing a positional variation of the set measurement target, a displacement image generating unit for generating a graph representing transition of a press state applied to the measurement target on the basis of the positional variation of the measurement target, and a display unit for displaying the generated graph.

Abstract: A variable frequency passband circuit comprising two passband filters and three mixers (front, intermediate and output mixers) connected in a cascade fashion disposed in a signal path. Two VCOs inject frequency signals into the front mixer and the output mixer. The two VCOs are respectively controlled by control signals at two potentiometers through transfer switching means so that the synthetic passband of the filter may be varied. One potentiometer suppresses the higher frequency region of a baseband signal and the other potentiometer suppresses the lower frequency region of the base band signal, irrespective of USB or LSB receiving mode.

Abstract: An improvement in a transceiver having first and second carrier frequency oscillators for demodulation, a change-over device for making change-over of oscillation outputs between the first and second carrier frequency oscillators, a mixer for mixing the oscillation outputs from the first and second carrier frequency oscillators, and a switching circuit for connecting and disconnecting the input signal into, or output signal from, said mixer by on-off operations of the telegraphic transmission key to apply the signal to a low frequency amplifier of the transceiver.

Abstract: A local oscillator having a variable frequency oscillator and a carrier frequency oscillator for use in communication systems that transmit and/or receive signals on multiple frequency bands, one crystal reference oscillator; a converter circuit for mixing the outputs of at least the variable frequency oscillator and the carrier frequency oscillator to produce an output having a frequency corresponding to the receiving frequency and a phase-locked loop circuit including a plurality of voltage control oscillators corresponding to the number of receiving frequency bands; a mixing circuit for mixing the output of a predetermined one of the voltage control oscillators corresponding to a predetermined one of the frequency bands with the output of the converter circuit to produce an output of fixed frequency corresponding to the one frequency band; a programmable counter that divides the output of the mixing circuit in accordance with a frequency dividing ratio corresponding to the one frequency band; and a phase c