摘要:
A continuous, non-invasive fetal heart rate measurement is produced using an ultrasound probe positioned on the abdomen of the mother. The ultrasound probe includes a plurality of ultrasound transducers that are positioned within a housing having a transmission surface. The transmission surface is configured to defocus the individual ultrasound beams created by the plurality of ultrasound transducers. The transmission surface defocuses the ultrasound beam and creates a wider area of coverage for the ultrasound probe. The controller contained within the heart rate monitor selectively activates different combinations of the plurality of ultrasound transducers to reduce the signal-to-noise ratio while allowing the ultrasound probe to locate the fetal heart beat and subsequently increase the signal-to-noise ratio during continuous heart rate monitoring.
摘要:
A system for dynamic optimization of gain and contrast in ultrasound imaging includes an image processor module programmed to dynamically estimate a correction profile in real-time and apply the correction profile to adjust a gain and contrast of image frame data sets. The image processor module is programmed to identify tissue and background regions in an image frame data set, determine an image intensity for each of the tissue and background regions, and formulate a gain profile based on the image intensity of the tissue region to compensate the gain variation of an image. The image processor module is further programmed to calculate an image contrast metric based on the image intensity of the tissue and background regions, and modify a gray map of the image frame data set based on the image contrast metric to adjust the contrast of an image displayed on the display system.
摘要:
An ultrasound probe for guidance procedures is provided. The ultrasound probe includes a linear transducer array and a micro-motor configured to mechanically move the linear transducer array to provide ultrasound guidance of procedures.
摘要:
Ultrasound data is generated by a receive beamformer. Ultrasound image processing is applied to the ultrasound data for presentation of an image. Various ones of the ultrasound image processing steps may be reversed. For example, persistence processing may be reversed in order to obtain ultrasound data associated with data prior to persistence processing. This recovered data may be used to generate an image or for application of a different amount of persistence. Other processes that may be reversed to recover ultrasound data include focal and depth gain compensation, dynamic range compression, intensity or color mapping, and various filtering, such as persistence or spatial filtering.
摘要:
An apparatus, system and method for adaptively controlling a frame interval between ultrasound scanning frames of an ultrasound elasticity imaging scan. The system includes a transmitter for transmitting ultrasound beams to a subject during an ultrasound elasticity imaging scan, and a receiver for receiving ultrasound beam echoes from the subject responsive to transmitted ultrasound beams. The system also includes a processor for processing a plurality of the ultrasound beam echoes to determine a strain variation of the tissue undergoing strain, calculating a value for an ultrasound scanning frame interval adapted for imaging the tissue undergoing the determined strain variation, and setting the value of the ultrasound scanning frame interval for acquiring ultrasound elasticity images of the tissue undergoing the determined strain variation.
摘要:
An apparatus, system and method for adaptively controlling a frame interval between ultrasound scanning frames of an ultrasound elasticity imaging scan. The system includes a transmitter for transmitting ultrasound beams to a subject during an ultrasound elasticity imaging scan, and a receiver for receiving ultrasound beam echoes from the subject responsive to transmitted ultrasound beams. The system also includes a processor for processing a plurality of the ultrasound beam echoes to determine a strain variation of the tissue undergoing strain, calculating a value for an ultrasound scanning frame interval adapted for imaging the tissue undergoing the determined strain variation, and setting the value of the ultrasound scanning frame interval for acquiring ultrasound elasticity images of the tissue undergoing the determined strain variation.
摘要:
Alternative embodiments are provided, for use individually or in combination, for thermal management of catheter distal ends and other types of probes such as may be used in catheter and other instruments' diagnostic and interventional devices. In an exemplary embodiment, a catheter distal end (1000) comprises an ultrasound imaging assembly (1003) that comprises an actuator (1004), a drive shaft (1006), a section (1008) of an interconnect (1010), and a transducer assembly (1009). A circulation fin (1018) optionally may be affixed to the bottom (1016) of transducer assembly (1009), and extends into a defined space (1017) to enhance circulation of acoustic transmission medium that is in the defined space (1017). This disperses heat from the actuator (1004) and the transducer assembly (1009). A similar fin (1018) may also, or alternatively, be positioned on the section (1008) of interconnect (1010). Other thermal management approaches also are disclosed.
摘要:
A system for imaging and providing therapy to one or more regions of interest is presented. The system includes an imaging and therapy catheter configured to image an anatomical region to facilitate assessing need for therapy in one or more regions within the anatomical region and delivering therapy to the one or more regions of interest within the anatomical region. In addition, the system includes a medical imaging system operationally coupled to the catheter and having a display area and a user interface area, wherein the medical imaging system is configured to facilitate defining a therapy pathway to facilitate delivering therapy to the one or more regions of interest.
摘要:
An apparatus, system and method for adaptively controlling a frame interval between ultrasound scanning frames of an ultrasound elasticity imaging scan. The system includes a transmitter for transmitting ultrasound beams to a subject during an ultrasound elasticity imaging scan, and a receiver for receiving ultrasound beam echoes from the subject responsive to transmitted ultrasound beams. The system also includes a processor for processing a plurality of the ultrasound beam echoes to determine a strain variation of the tissue undergoing strain, calculating a value for an ultrasound scanning frame interval adapted for imaging the tissue undergoing the determined strain variation, and setting the value of the ultrasound scanning frame interval for acquiring ultrasound elasticity images of the tissue undergoing the determined strain variation.
摘要:
A method of enhancing needle visualization in ultrasound imaging is provided. The method includes reducing overall gain in needle frames, and applying a nonlinear mapping to the needle frames, wherein the nonlinear mapping is configured to make strong signals stronger and make weak signals weaker after mapping.