38 results about "Echogenicity" patented technology

A notched tissue-collection needle configured similarly to a fine-needle-aspiration needle is provided with a cutting edge disposed in the notch and configured to excise tissue into the notch for collection. A stylet may be provided through a lumen of the needle during introduction into a patient body. The needle may be provided with echogenicity-enhancing features.

Tissue ablation probes and methods of using tissue ablation probes are provided. Each tissue ablation probe comprises an electrically conductive probe shaft, at least one tissue ablation electrode carried by a distal end of the probe shaft, and one or both of an insulative element and an echogenic element. The insulative element and / or the echogenic element may, e.g., be affixed to, or selectively removable from, the probe shaft to increase the insulative capability and echogenicity of the probe. An echogenic sheath having the insulative element and / or the echogenic element may be slidably disposed over the probe shaft to impart insulative and echogenic properties to the probe shaft.

Systems and methods for imaging an object that are capable of capturing an image or images of the object using an imaging modality, automatically detecting and analyzing the image or images by way of converting the image or images to at least one binary image, and analyzing the at least one binary image to extract and / or segment regions-of-interest (ROIs) from the at least one binary image. The object can be or include an implantation, occlusion, medical device, body lumen, tissue, organ, duct, and / or vessel. The imaging modality can be or include X-ray, CT, MRI, PET, and / or ultrasound, or any combination thereof. Also included are compositions of soft, implantable materials with one or more carbon-based material, nanomaterial, and / or allotrope present in an amount sufficient as an ultrasound contrast agent effective for days, months, or years and which compositions are useful in the automated imaging methods of the invention.

Embodiments include a fiducial deployment system. A fiducial may include dimples to enhance echogenicity and / or to provide for engagement with a delivery cannula or stylet. The needle system may be configured to deliver a plurality of fiducials to a target location in serial fashion, one at a time, when the fiducials are coaxially disposed around a central deployment member that may be embodied as a delivery cannula or stylet. In certain embodiments, echogenic placement of fiducials may present certain advantages. An elongate structure may be included that is configured to distally advance fiducials along the deployment member.

The disclosure provides medical devices comprising improved coatings for ultrasound detection, which provide optimal ultrasound images. Methods for preparing such devices are also provided.

A stabilized nanobubble can include a membrane that defines at least one internal void, which includes at least one gas. The membrane can include at least one lipid and at least one nonionic triblock copolymer that is effective to control the size of the nanobubble without compromising in vitro and in vivo echogenicity of the nanobubble.

A notched tissue-collection needle configured similarly to a fine-needle-aspiration needle is provided with a cutting edge disposed in the notch and configured to excise tissue into the notch for collection. A stylet may be provided through a lumen of the needle during introduction into a patient body. The needle may be provided with echogenicity-enhancing features. A coated-wire sheath through which the needle is slidably disposed includes an overcoating that is thicker along a distal length and thinner along a proximal length.

An echogenicity quantification method and a calibration method for ultrasonic device using echogenicity index are disclosed. The method includes: receiving an ultrasound image which comprises a plurality of grayscale pixels; choosing a region of interest (ROI); calculating the values of the grayscale pixels in ROI to obtain average value and standard deviation; excluding pixels in ROI with the grayscale value smaller than the sum of the minimum value in the grayscale image and the product of a first scaling factor and the standard deviation, and larger than the sum of the average value and the product of a second scaling factor and the standard deviation; averaging the values of the remaining grayscale pixels in ROI to obtain an average value of interest; choosing a reference region; averaging the values of the remaining grayscale pixels in the reference region to obtain an average value of reference; and calculating the difference between the average value of interest and the average value of reference to obtain an echogenicity index.

A notched tissue-collection needle configured similarly to a fine- needle-aspiration needle is provided with a cutting edge disposed in the notch and configured to excise tissue into the notch for collection. A stylet may be provided through a lumen of the needle during introduction into a patient body. The needle may be provided with echogenicity-enhancing features.

Methods and apparatuses for utilizing an integrated, automated aerating device for echogenicity are described. The aeration device can have a pressurized vessel to provide echogenic air bubbles independently of fluid delivered for sonohsyterosalpingography. The aeration device can selectively supply a gas in liquid during ultrasound and radiographic procedures for enhanced visualization of the uterine cavity and fallopian tubes.