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Related Concept Videos

Ultrasound I: Abdominal Ultrasonography01:20

Ultrasound I: Abdominal Ultrasonography

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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.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
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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.
During an ultrasonography procedure, a handheld device called...
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Related Experiment Video

Updated: Jan 11, 2026

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
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Freehand Three-Dimensional Ultrasound Image-Guided Needle Targeting for Percutaneous Abdominal Puncture.

Tiexiang Wen1, Qian Ni2, Jia Gu3

  • 1College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, China.

The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS
|November 13, 2025
PubMed
Summary

This study introduces a novel radiation-free guidance system for percutaneous abdominal interventions, enhancing needle placement accuracy using 3D ultrasound. The system shows significant potential for safer clinical applications.

Keywords:
freehand 3D ultrasoundimage‐guided interventionpercutaneous needle guidancereal‐time needle trackingultrasound image augmentation

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Area of Science:

  • Medical Imaging
  • Surgical Navigation
  • Interventional Radiology

Background:

  • Percutaneous abdominal interventions necessitate precise, real-time guidance for safe needle placement.
  • Conventional CT/fluoroscopy offer accuracy but involve radiation exposure.
  • Ultrasound (US) is radiation-free but lacks robust 3D visualization.

Purpose of the Study:

  • To develop and validate a novel guidance system for radiation-free percutaneous abdominal interventions.
  • To integrate a needle-guide mechanism with a tracked ultrasound probe for real-time targeting.
  • To enable precise needle trajectory augmentation onto live ultrasound images.

Main Methods:

  • Developed a system integrating a needle-guide mechanism with a tracked ultrasound probe.
  • Implemented freehand 3D ultrasound volume reconstruction at 25 frames per second.
  • Validated the system using a mockup, phantoms, a pig model, and a human volunteer.

Main Results:

  • Achieved 3D ultrasound acquisition within 10 seconds.
  • Demonstrated high accuracy with mean calibration errors of 0.62 mm and 0.22°.
  • Reported needle tracking errors of 0.84 ± 0.40° (angular) and 0.76 ± 0.38 mm (positional).

Conclusions:

  • The developed system provides accurate, rapid, and radiation-free guidance for interventions.
  • The technology shows strong potential for enhancing safety and efficacy in clinical applications.
  • This advancement offers a promising alternative to radiation-based imaging modalities.