Abstract: Ultrasound imaging systems and methods for generated clutter-reduced images are provided. For example, an ultrasound imaging system can include an array of acoustic elements in communication with a processor. The processor is configured to activate the array to perform a scan sequence to obtain a plurality of signals, identify off-axis signals from the plurality of signals by comparing the right subaperture and the left subaperture, and create a clutter-reduced image based on the comparison. Because off-axis signals are more likely to create image clutter, reducing the influence of off-axis signals on the image can therefore improve the quality of the image. Accordingly, embodiments of the present disclosure provide systems, methods, and devices for generating ultrasound images that have reduced or minimized clutter, even for images obtained using arrays that do not satisfy the Nyquist criterion.

Abstract: A method of generating ECG reference data for MR image data acquisition includes obtaining an initial ECG dataset from a patient prior to moving the patient into a bore of the MRI device, wherein the initial ECG dataset comprises at least two channels of ECG data. An initial set of R-peaks is identified and an initial R-peak polarity and initial R-R interval are determined. A reference ECG dataset is then obtained from the patient once the patient is in the bore of the MRI device. A reference set of R-peaks is identified in the reference ECG dataset based on the initial R-peak polarity and the initial R-R interval, and R-peak reference data is generated based on the reference set of R-peaks. Acquisition of MR image data from the subject is then triggered using the R-peak reference data.

Abstract: An apparatus for determining a disease parameter describing a type of cardiac disease includes a unit for reading input parameters representing 3D myocardial velocity fields with voxel wise 3D velocity information. The velocity vectors represent velocity of a voxel of a region of the heart at a predefined time point or time interval; a velocity vector depicts a voxel wise 3D velocity of the myocardium with different magnitude. A processor applies an algorithm to obtain a rotation parameter and/or strain-rate-tensor representing local curl of the input parameters and local rate of strain at a certain spatial point, at a certain time point or time interval. A processor calculates the disease parameter on the basis of the rotation parameter and strain-rate-tensor, dividing an absolute value of the rotation parameter by an eigenvalue. The disease parameter reflects a proportion to overall deformation of local layer shearing with regard to local pure deformation.

Abstract: A medical diagnostic-imaging apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires three-dimensional medical image data in which a subject is imaged. The processing circuitry extracts a movable range of a probe based on a structure of the subject shown in the three-dimensional medical image data. The processing circuitry sets a target scan region to be a subject to scanning by the probe based on the extracted movable range. The processing circuitry displays the target scan region in the three-dimensional medical image data.

Abstract: Various systems are provided for neck radio frequency (RF) coil assemblies for a magnetic resonance imaging (MRI) system. In one example, a neck RF coil assembly includes a central RF coil array including a first plurality of RF coils configured to cover a neck of a subject to be imaged, an upper RF coil array including a second plurality of RF coils extending upward from the central RF coil array and configured to cover a lower head region of the subject, and a lower RF coil array including a third plurality of RF coils extending downward from the central RF coil array and configured to cover an upper shoulder region of the subject, wherein each RF coil of the first, second, and third pluralities of RF coils comprises a loop portion comprising two distributed capacitance wire conductors encapsulated and separated by a dielectric material.

Abstract: Various methods and systems are provided for radio frequency (RF) coils for magnetic resonance imaging (MRI). In one embodiment, a radio frequency coil assembly for a magnetic resonance imaging system includes: a flexible spine; and at least two RF coil sections each coupled to the flexible spine and movable relative to each other, each RF coil section comprising at least one flexible RF coil, each RF coil including a loop portion comprising a coupling electronics portion and at least two parallel, distributed capacitance wire conductors encapsulated and separated by a dielectric material.

Abstract: Various methods and systems are provided for radio frequency (RF) coils for magnetic resonance imaging (MRI). In one embodiment, an RF coil assembly for an MRI system includes a posterior end including a first set of flexible RF coils; an anterior end including a second set of flexible RF coils; a central section extending between the posterior end and anterior end, wherein the posterior end and the anterior end are bendable to the central section. Each flexible RF coil of the first set and second set of flexible RF coils includes a loop portion comprising a coupling electronics portion and at least two parallel, distributed capacitance wire conductors encapsulated and separated by a dielectric material.

Abstract: An ultrasound signal processing device that generates, for each detection wave, a first complex Doppler signal sequence through quadrature detection of a reception signal sequence; generates tissue velocity data by calculating velocity values for each set of coordinates of observation points in a region of interest from the first complex Doppler signal sequence; generates a second complex Doppler signal sequence by performing clutter removal filter processing on the first complex Doppler signal sequence; generates first velocity data by calculating velocity values for each set of coordinates of the observation points from the second complex Doppler signal sequence; and generates, for each set of coordinates of the observation points, second velocity data based on the first velocity data and the tissue velocity data, and third velocity data by applying a correction to velocity values of the second velocity data that have an absolute value equal to or less than a threshold.

Abstract: A technique relates to an imaging apparatus. Extensions are coupled to a support structure, the extensions being spaced a predefined distance from one another, the extensions having a length that protrudes from the support structure. Light sources are coupled to the extensions such that the light sources are positioned to irradiate a scalp. Sensors are coupled to the extensions, the sensors being positioned at an angle to capture images of the scalp having been irradiated by the light sources.

Abstract: 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.

Abstract: A method for implanting an interventional medical device, including the following steps: delivering the distal end of the puncture needle into the right atrium via the inferior vena cava; locating the puncture site on atrial septum under X-ray fluoroscopy in a first perspective angle and a second perspective angle, and puncturing the atrial septum by the puncture needle through the puncture site; delivering the medical device to the left atrial appendage or left atrium for release under X-ray fluoroscopy in a first perspective angle. The implanting method of the disclosure does not require the use of a TEE device during implementation and provides benefits of a simple operation, short operation time, and easy implementation conditions, while also be easy to promote and popularize.