The medical imaging apparatus of the present invention includes a bath tank for accommodating a test subject, the test subject being at least a portion of a body of a human subject; a measurement device movable in a predetermined direction, the measurement device including ab group of elements to emit a radiation wave into the bath tank and receive a scattered radiation wave; and a control unit for measuring by the measurement device when at least one of a location of the test subject within a plane orthogonal to the predetermined direction, a location of the test subject in the predetermined direction, and continuity of data measured by the measurement device satisfies a predetermined condition. Because of this configuration, the medical imaging apparatus is able to acquire data covering the entire measurement target site.

A device and a method for detecting main acoustic indexes of multi-beam sonar pertaining to the field of hydrographic surveying and charting technology. The device includes a rotating device and a lifting gear installed in an anechoic tank. The bottom of the rotating device is equipped with a multi-beam sonar that has its rotating plane perpendicular to the direction of track line and transmits signals along the horizontal direction. A standard hydrophone is equipped at the bottom of the lifting gear, and is connected with a signal collector. The device utilizes the standard hydrophone to receive the pulse signals transmitted by the multi-beam sonar and employs the multi-beam sonar to receive the standard sound source signals, designs the detection process for data collection for analysis and research, thereby achieving the detection of the frequency, source level and beam angle of multi-beam sonar.

Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using spread-spectrum, wide instantaneous band, coherent, coded waveforms. In one aspect, a method includes synthesizing a composite waveform formed of a plurality of individual orthogonal coded waveforms that are mutually orthogonal to each other, correspond to different frequency bands and including a unique frequency with a corresponding phase; transmitting an acoustic wave based on the composite waveform toward a target from one or more transmitting positions; and receiving at one or more receiving positions acoustic energy returned from at least part of the target corresponding to the transmitted acoustic waveforms, in which the transmitting and receiving positions each include one or both of spatial positions of an array of transducer elements relative to the target and beam phase center positions of the array, and the transmitted acoustic waveforms and the returned acoustic waveforms produce an enlarged effective aperture.

The invention is to provide an ultrasonic image with a clear tissue structure while reducing speckle noise of the ultrasonic image. An ultrasonic wave is transmitted from the transducer to the subject, and an echo generated in the subject is received. The first ultrasonic image and the second ultrasonic image are generated using a reception signal. The second ultrasonic image is an image smoother than the first ultrasonic image. The image processing unit calculates filter coefficients using pixel values of corresponding pixels of the first ultrasonic image and the second ultrasonic image, and generates an output image by processing one of the first ultrasonic image and the second ultrasonic image using the filter coefficients.

An ultrasound imaging system uses a magnetic linear motor driven ultrasound scanner, with accurate track and hold operation and/or other motion feedback, to scan a two dimensional or three dimensional area of a sample. The scanner is implemented in a low-power and low-bandwidth handheld device and is connected with a remote image processing system that receives raw data and performs full ultrasound image analysis and creation, allowing the handheld to be used for scanning, pre-processing, and display.

An ultrasonic diagnostic imaging system produces 3D images by scanning a target volume with a mechanical probe, which scans the target volume by sweeping the scan plane of an array transducer through the target volume in an elevation direction. The array transducer has two selectable focal depths, and a plurality of scan planes of image data are acquired with a far field focus, and a plurality of scan planes of image data are acquired with a near field focus. The scan planes acquired with the far field focus are separated in the elevation direction by a distance which satisfies a spatial sampling criterion in the far field, and the scan planes acquired with the near field focus are separated in the elevation direction by a distance which satisfies the spatial sampling criterion in the near field, resulting in fewer scan plane acquisitions with the near field focus that the number of scan plane acquisitions with far field focus and hence an improved volume rate of display.

Disclosed is a linear scanning mechanical volume probe comprising a bracket on which a drive wheel, a first reverse wheel and a second reverse wheel are provided, an axis of the drive wheel, an axis of the first reverse wheel and an axis of the second reverse wheel are parallel; a guide rod is further provided on the bracket, and the axis of the guide rod is perpendicular to the axis of the drive wheel, a slider which can slide axially along the guide rod is provided on the guide rod, a transducer is fixedly connected to the slider; the first reverse wheel and the second reverse wheel are respectively provided near opposite ends of the guide rod, and further comprise a first rope and a second rope. The linear scanning mechanical volume probe can ensure that a high resolution image can be obtained at a distance from the transducer.

A multi-patch ultrasound array according to the present disclosure includes a plurality of patches of transducer elements, the plurality of patches arranged along a first direction of the array, and a frame connecting the plurality of patches such that adjacent ones of the plurality of patches are slidable relative to one another in a second direction of the array which is perpendicular to the first direction. An ultrasound system according to the present disclosure includes a multi-patch ultrasonic array comprising a plurality of ultrasound patches, each individually operable to transmit ultrasound toward a region of interest and receive echoes from the region of interest, wherein each patch is slidable in relation to an adjacent patch, an ultrasound scanner configured to generate an ultrasound image from the received echoes, and a communication link configured to selectively couple each of the plurality of patches to the ultrasound scanner.

An object information acquiring apparatus is provided that includes: a plurality of receiving elements which receive an acoustic wave that propagates from an object, and which convert the acoustic wave to a reception signal; an adaptive beamformer that performs adaptive beamforming of adjusting reception directionality in accordance with the reception signal in use of the reception signal; a delay-and-sum beamformer that performs delay-and-sum beamforming having preset directionality in use of the reception signal; an amplitude modulator that uses one output signal of one of the adaptive beamformer and the delay-and-sum beamformer, to perform amplitude modulation on an output signal of the other one of the beamformers; and a generator that, on the basis of a signal outputted by the amplitude modulator, generates image data on the interior of the object.

A fish detection system including a transducer configured to provide image information for underwater locations, a directional member, and a light assembly. The directional member is member configured to move in conjunction with the transducer, the orientation of the directional member corresponding to a direction of the adjustable field of view of the transducer. The light assembly is configured to illuminate the directional member.