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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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.
During an ultrasonography procedure, a handheld device called a...
Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

Ultrasound II: Endoscopic Ultrasound and FibroScan

Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
Ultrasound I: Abdominal Ultrasonography01:20

Ultrasound I: Abdominal Ultrasonography

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.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
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:
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A Methodological Protocol and Considerations for Transcranial Ultrasonic Stimulation in Exploratory Clinical Human Studies
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Published on: December 12, 2025

Performance of ultrasonic retrograde systems.

Phillip L M Tomson1, Simon C Lea, Philip J Lumley

  • 1School of Dentistry, University of Birmingham, Birmingham, United Kingdom. p.l.tomson@bham.ac.uk

Journal of Endodontics
|April 18, 2007
PubMed
Summary

Ultrasonic generator power output varies significantly between Piezon-Master 400 units and analytic handpieces. This inconsistency affects tip vibration amplitude, impacting performance across different power settings.

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Area of Science:

  • Biomedical Engineering
  • Dental Technology

Background:

  • Ultrasonically activated devices are crucial in dental procedures.
  • Consistent power output from Piezon-Master 400 generators and handpieces is essential for predictable clinical outcomes.

Purpose of the Study:

  • To assess power output variations in Piezon-Master 400 generators and analytic handpieces.
  • To evaluate the relationship between power settings and tip vibration amplitude.

Main Methods:

  • Utilized a scanning laser vibrometer to measure vibration displacement amplitude of a KiS 2D tip.
  • Acquired data from four generator/handpiece combinations across six power settings.
  • Performed univariate analysis of variance (general linear model).

Main Results:

  • No linear increase in tip displacement amplitude was observed with increasing power settings for any combination.
  • Generator, handpiece, and power setting were significant variables (p<0.0001).
  • Significant variability in power output was found between generators.

Conclusions:

  • Piezon-Master 400 generator power output is inconsistent.
  • Analytic handpieces do not perform consistently with each other.
  • Variability in power output may affect the efficacy and predictability of ultrasonic dental procedures.