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Related Concept Videos

Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Doppler Effect - II01:05

Doppler Effect - II

The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
Assessment of apical radial pulse01:25

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation

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Related Experiment Video

Updated: Jun 18, 2026

Ultrasound-based Pulse Wave Velocity Evaluation in Mice
08:07

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

Performance assessment techniques for Doppler radar physiological sensors.

Noah Hafner1, Victor Lubecke

  • 1Electrical Engineering Department, University of Hawaii, Honolulu, HI 96822, USA. nmh+ieee@nomh.org

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|December 8, 2009
PubMed
Summary
This summary is machine-generated.

A novel artificial target and software technique reliably assesses continuous wave Doppler radar systems for physiological sensing. This method enables repeatable testing of radar performance, even for subtle configuration changes not apparent with human subjects.

Related Experiment Videos

Last Updated: Jun 18, 2026

Ultrasound-based Pulse Wave Velocity Evaluation in Mice
08:07

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

Area of Science:

  • Biomedical Engineering
  • Radar Systems Engineering

Background:

  • Continuous wave Doppler radar systems are increasingly used for non-contact physiological sensing.
  • Accurate assessment of these systems is crucial for reliable health monitoring applications.

Purpose of the Study:

  • To introduce a new technique for evaluating the performance of continuous wave Doppler radar systems used in physiological sensing.
  • To provide a stable and repeatable method for testing radar system capabilities.

Main Methods:

  • Development of a mechanical artificial target simulating human heart movement.
  • Implementation of software algorithms to analyze radar system performance using the artificial target.
  • Testing with simple to complex motion patterns provided by the mechanical target.

Main Results:

  • The artificial target allows for stable and repeatable motion patterns.
  • The technique facilitates detailed assessment of radar system performance.
  • Configuration changes can be evaluated in ways not possible with human targets.

Conclusions:

  • The presented technique offers a robust method for continuous wave Doppler radar system assessment in physiological sensing.
  • This approach enhances the reliability and diagnostic accuracy of radar-based health monitoring.