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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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UV–Vis Spectrometers01:14

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The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
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Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
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Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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Ultrasound I: Abdominal Ultrasonography01:20

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Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
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Spectrophotometry: Introduction01:16

Spectrophotometry: Introduction

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Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
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Ultrasound Velocity Measurement in a Liquid Metal Electrode
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ULTRASOUND SPECTROSCOPY.

S R Aylward1, M McCormick1, H J Kang1

  • 1Kitware, Inc., North Carolina, USA.

Proceedings. IEEE International Symposium on Biomedical Imaging
|June 12, 2018
PubMed
Summary
This summary is machine-generated.

Ultrasound spectroscopy extracts tissue features from radiofrequency (RF) data at multiple settings. This method accurately classifies tissues, aiding point-of-care ultrasound (POCUS) applications like detecting internal bleeding.

Keywords:
Point-of-CareRadiofrequencySegmentationTissue ClassificationTraumaUltrasound

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Ultrasound Technology

Background:

  • Ultrasound imaging relies on B-mode, which has limitations in quantitative tissue characterization.
  • Point-of-care ultrasound (POCUS) applications often require advanced diagnostic capabilities beyond B-mode.
  • Operator experience can significantly impact the diagnostic accuracy of traditional ultrasound.

Purpose of the Study:

  • Introduce and validate the novel technique of Ultrasound Spectroscopy.
  • Demonstrate the capability of Ultrasound Spectroscopy to extract rich tissue features from RF data.
  • Showcase its potential for accurate tissue classification and quantitative analysis in POCUS.

Main Methods:

  • Acquired ultrasound radiofrequency (RF) data at multiple power and frequency settings.
  • Developed feature extraction algorithms from the multi-setting RF data.
  • Conducted ex vivo tissue phantom studies for validation.

Main Results:

  • Ultrasound Spectroscopy extracts informative features for tissue characterization.
  • The technique demonstrated exceptional accuracy in classifying blood versus other tissues.
  • Feature classification remained accurate across various image locations and body habitus.

Conclusions:

  • Ultrasound Spectroscopy offers a powerful new approach for quantitative ultrasound analysis.
  • This technique can enhance diagnostic capabilities, particularly in resource-limited POCUS settings.
  • It shows significant promise for automated tissue classification and disease detection, such as internal bleeding.