Abstract: The client device executes a simulation, and generates a data set including result data and metadata based on the execution result. The client device generates a first hash value of the data set and transmits the data set and the first hash value to the data management device. When the data set and the first hash value are received from the client device, the data management device generates a second hash value of the data set from the data set. The data management device decides to register the data set in the distributed ledger when the first hash value and the second hash value match each other.

Abstract: An ultrasonic imaging apparatus comprises an ultrasonic transducer for propagating ultrasonic beams to a subject, and converting echo beams reflected from the subject into an echo signal, a focus switch circuit for setting a plurality of focal depths, and a focus control circuit for outputting delay signals corresponding to the focal depths set by the focus switch circuit. The focus control circuit changes the delay signals corresponding to the preset focus depths to signals corresponding to the focus depths that are located within a display range, especially when the ultrasonic image is enlarged and shifted with at least one of the preset focus depths out of the display range.

Abstract: An ultrasonic imaging apparatus includes an ultrasonic transducer for transmitting/receiving a high-frequency ultrasonic wave for obtaining a B-mode image and a low-frequency ultrasonic wave for obtaining a Doppler-mode image, a transmission circuit for driving the ultrasonic transducer in B and Doppler modes so as to output an ultrasonic beam therefrom, a reception circuit for processing a high-frequency echo signal corresponding to the B mode and a low-frequency echo signal corresponding to the Doppler mode, and for outputting a B-mode image signal and a Doppler-mode image signal, and a display circuit for displaying the B- and Doppler-mode image signals from the reception circuit as a tomographic image of an object to be measured and blood flow speed data.

Abstract: An ultrasonic diagnosing apparatus comprising a probe for radiating ultrasonic wave beams toward a target and converting ultrasonic echo data reflected from the target into electrical signals indicative of a tomogram of the target, an ultrasonic wave transmission and reception circuit for controlling the probe to radiate the ultrasonic wave beams in predetermined ultrasonic field patterns, a processor for processing the electrical signals in accordance with correlations among the ultrasonic echo data, which depend upon the ultrasonic field patterns to eliminate artifact components of the tomogram from the electrical signals, a display device for displaying the tomogram of the target in response to the output signal of the processor, and a system pulse generator for generating a system synchronizing pulse supplied to the transmission and reception circuit and processor.

Abstract: B-mode image data obtained by using an electronic linear scanning probe are loaded into a first memory area of a frame memory in a memory format corresponding to a B-mode ultrasound beam. An ultrasound echo signal corresponding to a given location on the B-mode image is sampled so as to derive M-mode image data which are in turn loaded into a second memory area of the frame memory. The B-mode image data and the M-mode data, so stored, are simultaneously read out in a television format from the frame memory, so that the B-mode image and the M-mode image are concurrently displayed on the screen of a television monitor side by side. The M-mode image data may be substituted with Doppler data in order to concurrently display the B-mode image and the Doppler data (frequency spectrum) on the screen of the television monitor.

Abstract: An electronic linear scan mode and an electronic sector scan mode are selectively used individually or in combination under the control of a mode selection means provided for determining a scan mode for an ultrasonic probe consisting of a plurality of ultrasonic transducers the ultrasonic wave transmission and reception timing of which is controlled by a scanning control means in accordance with the determined scan mode.

Abstract: In an ultrasonic diagnosing apparatus of an electronic sector-scanning type in which a target plane in a body is observed by directly contacting a probe with the body surface of a patient, a circuit for setting a depth from the body surface to the target plane has a function to compensate for variations of the depth and the swing angle of the probe arising from the unevenness on the body surface and those of the distance from the probe to the target plane due to a sector-scanning change of the ultrasonic beam.