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Related Concept Videos

Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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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...
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Imaging Studies VII: Vascular Imaging01:19

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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Enhancement of Ultrasound B-Mode Image Quality Using Nonlinear Filtered-Multiply-and-Sum Compounding for Improved

Asraf Mohamed Moubark1, Luzhen Nie2, Mohd Hairi Mohd Zaman1

  • 1Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.

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Summary

Filtered Multiply and Sum (FMAS) improves ultrasound axial resolution without compromising penetration depth. This novel method enhances image quality and speeds up segmentation in biomedical imaging applications.

Keywords:
active contourbiomedicalcommon carotid arteryfiltered multiply and sumfiltered-delay multiply and sumultrasound B-mode imaging

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Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Biomedical Engineering

Background:

  • Ultrasound B-mode imaging axial resolution (AR) is typically limited by pulse duration and bandwidth.
  • Shorter pulses improve AR but reduce penetration depth, presenting a trade-off.
  • Existing methods like plane-wave compound imaging with Delay and Sum (DAS) and Filtered Delay Multiply and Sum (FDMAS) have limitations.

Purpose of the Study:

  • To elucidate the theoretical underpinnings of the Filtered Multiply and Sum (FMAS) algorithm.
  • To explain how FMAS enhances spatial resolution, particularly in the axial direction.
  • To demonstrate the practical application and benefits of FMAS in biomedical imaging.

Main Methods:

  • Investigated the autocorrelation technique used in FMAS for spatial compounding.
  • Conducted simulations, phantom measurements, and in vivo studies to evaluate FMAS performance.
  • Applied FMAS to ultrasound B-mode imaging of the common carotid artery and used balloon snake active contour segmentation.

Main Results:

  • FMAS provides improved axial resolution and contrast ratio compared to conventional methods.
  • FMAS achieves a higher frame rate and lower computational complexity.
  • The FMAS algorithm accelerates the segmentation process by reducing iterations for contour detection.

Conclusions:

  • FMAS offers a superior alternative for improving axial resolution in ultrasound imaging.
  • The algorithm demonstrates significant advantages in frame rate, computational efficiency, and image quality.
  • FMAS shows promise for enhancing practical biomedical imaging applications, including faster image segmentation.