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Updated: Jun 10, 2026

Lesion Explorer: A Video-guided, Standardized Protocol for Accurate and Reliable MRI-derived Volumetrics in Alzheimer's Disease and Normal Elderly
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Small lesion detection with resolution enhancement compression.

Paul Linden1, Jose R Sanchez, Michael L Oelze

  • 1Beckman Institute, 405 N. Mathews, Urbana, Illinois 61801, USA.

Ultrasonic Imaging
|August 10, 2010
PubMed
Summary
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A new ultrasound imaging method called resolution-enhancement compression (REC) significantly improves lesion detection. This technique enhances axial resolution and signal-to-noise ratio, making small lesions more visible.

Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • Biomedical Engineering

Background:

  • Improving lesion detectability in ultrasound imaging is crucial for accurate diagnosis.
  • Conventional pulsing (CP) and linear chirp (LC) methods have limitations in resolution and signal-to-noise ratio.
  • Novel excitation techniques are needed to enhance ultrasonic imaging performance.

Purpose of the Study:

  • To evaluate the effectiveness of the novel resolution-enhancement compression (REC) coded-excitation method.
  • To assess REC's ability to improve axial resolution, echo signal-to-noise ratio (eSNR), and lesion detectability.
  • To compare REC against conventional pulsing (CP) and linear chirp (LC) techniques.

Main Methods:

  • The REC technique was implemented to double the -3-dB fractional pulse-echo bandwidth in simulations and experiments.

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  • Lesion detectability was quantified using the lesion signal-to-noise ratio (lSNR) metric.
  • Simulations and phantom experiments (3, 5, and 8 mm lesions) were conducted to compare CP, LC, and REC.

    • Main Results:

    • Simulations showed higher lSNR with REC for lesions from 1 mm to 8 mm, with an eSNR increase of nearly 15 dB.
    • Experimental results demonstrated higher lSNR with REC compared to CP and LC.
    • REC improved lSNR by 15%, 45%, and 40% for 3, 5, and 8 mm lesions, respectively, with a 5.7 dB eSNR increase.

    Conclusions:

    • The resolution-enhancement compression (REC) technique significantly enhances axial resolution and eSNR in ultrasonic imaging.
    • REC demonstrably improves lesion detectability, particularly for small lesions, as quantified by lSNR.
    • REC offers a superior alternative to conventional pulsing and linear chirp methods for improved diagnostic ultrasound.