Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Deflection of a Beam

Deflection of a Beam

Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Transient Large-Scale Anisotropy in TeV Cosmic Rays due to an Interplanetary Coronal Mass Ejection.

Physical review letters·2026

Same author

[Interpretation and reflections on the 2025 American Academy of Sleep Medicine clinical practice guideline for the treatment of central sleep apnea in adults].

Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases·2026

Same author

[Tumor regression grade for prognosis of patients with colorectal cancer liver metastasis undergoing conversion therapy].

Zhonghua wei chang wai ke za zhi = Chinese journal of gastrointestinal surgery·2026

Same author

Corrigendum to "Integrated GC-MS, LC-MS/MS metabolomics, and transcriptomics analysis of meat quality differences between marketed Wuzhishan and Duroc-landrace-Yorkshire pigs" [Food Chem.: Mol. Sci. 12 (2026) 100382].

Food chemistry. Molecular sciences·2026

Same author

First Detection of Ultrahigh Energy Emission from Gamma-Ray Binary LS I +61° 303.

Physical review letters·2026

Same author

Preclinical characterization and phase I results of TQB2102, a first-in-class HER2 biparatopic antibody-drug conjugate, in patients with advanced solid tumors.

Annals of oncology : official journal of the European Society for Medical Oncology·2026

Search research articles

Related Experiment Video

Updated: Jul 8, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 16, 2014

A dynamic focusing technique for delta-sigma-based beamformers.

P C Li¹, J J Huang, H L Liu

¹Department of Electrical Engineering, National Taiwan University, Tapei, ROC. paichi@cc.ee.ntu.edu.tw

Ultrasonic Imaging

|May 24, 2001

Summary

This study introduces a novel beamforming technique for diagnostic ultrasound using oversampling delta-sigma modulators. The method simplifies systems and maintains image quality without increasing background noise, unlike prior approaches.

More Related Videos

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Related Experiment Videos

Last Updated: Jul 8, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 16, 2014

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Area of Science:

Medical Imaging
Signal Processing

Background:

Diagnostic ultrasound systems utilize beamforming for image generation.
Oversampling delta-sigma modulators offer potential for reduced size, complexity, and cost in ultrasound imaging.
Existing dynamic focusing techniques often require additional hardware or bits, potentially increasing noise.

Purpose of the Study:

To present an alternative dynamic focusing technique for delta-sigma modulator-based ultrasound beamforming.
To reduce system complexity while maintaining or improving image quality.
To avoid the noise increase associated with previous dynamic focusing methods.

Main Methods:

Exploiting the symmetry of focusing delays relative to the transducer array center.
Synchronizing delays and selecting specific inserted values.
Utilizing a single bit to encode the delta-sigma modulator output.

Main Results:

The proposed technique adds no noise to the beam sum signal.
Image background noise levels are not increased.
Real ultrasound data demonstrated equivalent imaging performance to previous methods with reduced system complexity.

Conclusions:

The novel technique effectively implements dynamic focusing in delta-sigma modulator-based ultrasound beamforming.
This approach simplifies system design without compromising image quality or introducing noise.
It offers a more efficient alternative for achieving high-quality ultrasound images.